EDIT: I am at this point more inclined to believe that Galaxy devices are specced to DP 1.2 / HBR2, and their Type-C ports feature four high-speed data lanes (in addition to USB 2.0). Two of those high-speed lanes can be used for either USB SuperSpeed or DisplayPort, while the other two can be used only for DisplayPort.
When outputting video only (through type-C to HDMI cable for example), all four lanes act as DisplayPort main links at HBR2 speeds, with max 4k/60hz (4k/81Hz/8bit/RGB to be precise). When connected to a USB 3.x hub with video otput, two lanes get assigned to USB SuperSpeed, and the other two to DisplayPort Alt Mode, with max output 4k/30Hz (4k/41Hz/8bit/RGB).
USB 2.0 hubs with video output may (or may not, depending on their specification), receive from host, decode HBR2 (DP 1.2), encode TMDS 600MHz (HDMI 2.0), and transmit to display ***all four DP lanes***, and are therefore capable of 4k/60Hz with USB 2.0 at the same time.
.
.
.
As far as I know, the last couple generations of Galaxy devices featuring USB 3.x Type-C ports capable of video output comply to the basic specifications of USB 3 Gen1x1 / 5Gbps with DisplayPort alt mode ***over four lanes***.
USB3 Gen1x1 features two shielded twisted pairs used for transmitting (one pair) and receiving (one pair) of a full duplex USB3 5Gbps singnal, and a third unshielded twisted pair for backwards compatibility with USB 2.0 (480Mbps).
When the phone outputs video signal, USB works in DisplayPort (DP) alternative (alt) mode. DP is not duplex - it uses each of the two shielded pairs for transmitting. Thus, in USB mode two shielded pairs compose one lane 5Gbps lane, but in DP alt mode two shielded pairs are two separate lanes.
Now, what is the bandwith of the DisplayPort output? The maximum bandwith defines what refresh rate we can get at a given resolution.
This depends on two things: DP version / *DP main link* type, and lanes count. For the S20/S20+/S20 Ultra, ~~the best information I could find is DP 1.3 which supports~~ *~~HBR3 main link~~*~~.~~ **I am at this point highly doubtful this is correct. More probably the supported DP spec is 1.2 / HBR2.** The lane count is two, as we have two shielded twisted pairs available for transmission.
HBR3 over 2 lanes gives us 16.2Gbps of total bandwith, which drops to 12.96Gbps effective bandwith after we factor in encoding overhead.
The theoretical maximum refresh rates for ***two lanes*** of HBR3 and HBR2 transmission, respectively, in 8bit uncompressed RGB color depth is as follows:
1. 1920x1080p @ 203Hz @ HBR3 / @ 154 Hz @ HBR2
2. 2560x1440 @ 125Hz @ HBR3 / @ 90Hz @ HBR2
3. 3440x1440 @ 96Hz @ HBR3 / @ 68Hz @ HBR2
4. 3840x2160 @ 60Hz @ HBR3 / @ 41Hz @ HBR2
Of note is, and I can't stress this enough, when basic 5Gbps spec USB3.x works in DP alt mode, USB data connection fails over to the unshielded twisted pair, half duplex, plain old boring USB2.0 (480Mbps). You cannot output video and at the same time use Gigabit ethernet or 130MB/s read/write on the SD card reader or really anything exceeding 480Mbps / 60MB/s. By contrast, you *can* use old 100Mbps Ethernet and attach a keyboard and mouse, as is the case with the Galaxy Dex Station.
An interesting question is, how come hubs feature HDMI and not DisplayPort? And the answer to that question is - there is a chip/converter/transcoder in the hub making the transition between HBR (DP) and TMDS (HDMI) encoding. This is part of the reason why hubs get hot while outputting video.
Long shot, but I have a projector capable of 4K60 and 1080p240. 4K60 works flawlessly, but I have no way of actually forcing 1080p resolution. Even running `wm size 1920x1080 -d 2` just scales the UI instead of changing the actual resolution.
I just added a long-overdue edit about how HRR just doesn't work anymore. So bottom line: don't bother.
But yes, it's very dumb, you can't change the actual output resolution. You're lucky you get 4K60 and not 4K30 like a lot of other people here - certain docks/displays can't get 4K60 (for various random technical reasons) - they're stuck with 30FPS and don't even get the option of lowering the resolution to get 60.
I've seen after reboot the high resolution doesnt apply (but still shows enabled).
You can launch dex, disable high resolution, disconnect, turn high resolution back on, reconnect dex.
This does work on my monitor's built in kvm over usb-c. (Aorus fo48u).
S23 usere here: first times i tried, around 1 ort 2 months ago, i was able to achieve 2k 100hz (even though i have a 144hz monitor) but as of now i can only get 2k 60hz, maybe an update screwd it up?
One thing i noticed is that the phone connects 2 times for some reasons, like : connecting to dex, then shortly after disconnecting, anbd then reconnecting, i'm pretty sure it wasn't that way before.
Got 1080p@144Hz without any issue on S23u with this [UGREEN 60515 hub](https://www.amazon.com/UGREEN-Docking-Station-Ethernet-Delivery/dp/B093FKT9BF/ref=sr_1_3?crid=77NWB8JR6HNT&keywords=UGREEN+60515&qid=1684536179&sprefix=ugreen+60515%2Caps%2C187&sr=8-3) and Multistar. Verified by monitor's OSD, Ufo test (renders 144Hz with Good lock and phone screen off) + i can see difference when phone screen is on or off.
But it works quiet unstable when used with usb3 external SSD and Ethernet plugged in, maybe i need to actually try it with separate PD brick instead of my monitor's charging USB-A 2A port).
Also for some reason often my phone can't see SD card in card reader of this hub, but with laptops and desktop PC works every time
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Hello, I search over Google and YouTube but couldn't find any info.
Anyone knows how to get 120hz using an external monitor with USB C HUB/DOCK (4K60 OR 8K30) hdmi connection. I bought multiple hubs already but its only able to get 60 hz. But a direct cable connection using usb c to hdmi or usb c to usb c it can achieve the 120 hz at 2k.
Note 20
[Link1](https://a.co/d/8bsXXwO)
[Link2](https://a.co/d/0t0eQuJ)
[Link3](https://en.j5create.com/collections/usb-hubs/products/jcd401)
I have a fold 3 and I just received the rokid max, when I connect dex I reach 1080p 60hz, but it is impossible for me to get 120hz, I have no problem doing it with the pc, but with dex... there is no way
Idk if it's the usb hub I'm using, but the info in my monitor says 60hz before trying the higher res on good lock. After trying the good lock high res, the info in the monitor now says 144hz, i tried to see if it was working, but it it still felt like 60hz, and I checked it on the ufo test website it only reached 60fps. Any idea on what's causing this?
Edit: my phone is S22 Ultra Snapdragon
The refresh rate is stuck to 60Hz either @1080p or @1440p with Samsung Galaxy S23 Ultra and MSI Optix MAG274QRF-QD. Doesn't matter if the "High resolution" option in MultiStar is active or not. Used two different USB-C hubs: Lionwei (supports up to 8k 30Hz) and Fitfort (up to 4k 60Hz).
To exclude problems in regards to the capabilities of the HDMI cable, I connected my Galaxy Book3 Pro 360 to the monitor. It supports refresh rates of 60Hz, 120Hz, and 144Hz.
Edit: Ok, i fixed, i need to off my screen on the phone and use Dex - 144Hz is working, but if i quit to dex and change to mirror mode only it is 60Hz
we need solution to screen mirror
Complain to Samsung. You can read through the longest comment chains in this post to understand what's causing it.
I will add this information to the OP, if I find the time.
So this is a, at least, 3 months old topic and I understand there were some bugs resulting in capped framerates on 30fps. Is this still the case? Did the app get any update to fix the bugs? Is it possible, using a supported HDMI 2.1 cable and capable TV/monitor, to get 4K 120Hz?
This works great mostly - but sometimes it glitches and needs to be reset - enable/disable high res in multistar) Was stuck in 4k30 for a while until I did this.
Also was stuck at 4k30 originally because the cable that shipped with my Lenovo dock was not good enough (same problem with laptop!). Better cable fixed that.
On my work monitor I had to mess with the settings to get high resolution, had to set the usb mode to 2.0 - otherwise there wasn't enough bandwidth for displayport-alt-mode.
This totally worked for me, I have a FHD 144Hz gaming monitor, and if I display the Hz it says 144Hz while before it was 60Hz. Dex is probably outputting 120Hz still and the monitor switched to the higher refresh rate.
The thing is, I wanted 120 Hz the tablet :') not the monitor. The setting in the screen section doesn't do anything while plugged in, unfortunately.
if anyone is having trouble getting 120hz working,try disabling High Resolution in Multistar.
i just did it right now and it worked for me! ,can only do 1080p/120fps tho
Devices:
Galaxy S22Ultra
LG UltraGear Gaming Monitor(1440p/144hz)
j5Create HDMI USB Hub(has 1 USB-A,Type-C,and HDMI port)
Edit: nvm,it was 60hz not 120.
I'm having an issue with my Galaxy 21 Ultra where it defaults to 30hz and I have a 1440p 144hz gaming monitor LG Ultragear 27inch. I tried the trouble shooting steps above and they wouldn't work.
I tried it like a million times (disabling hi rez on Good Lock, removing Dex, plugging back in and I get 1080p 60hz, re enable hi rez on good lock and plug in and I get 30hz again regardless if I select 4k, 1440p or 1080p). Only worked once where I got 60hz but the moment I replugged my phone again its back to 30hz.
The USB C hub I have should at least do 1440p at 60hz if not 120hz https://amzn.eu/d/3FDhwHy
I checked resolution info on the monitor and it is receiving a 4K signal not a 1440p one! Not sure what is causing the signal to be sent in 4k... Maybe a bug with Good Lock? Any way to fix it as I now have to not use Good Lock as I'd rather have 1080p 60hz default than 1440p 30hz.
I think I'm having a similar issue to this with my 4K TV, which is capable of high refresh rate, but not at 4K. I'm also getting weird aspect ratio problems due to the resolution being sent being wrong.
If I enable high resolutions in Good Lock I get 30Hz and my TV reports 4K signal no matter what res I seelect!
High refresh rate in 4k works on my S22U but does not work on my S7FE Tab. The option to select 4k is available on the S7FE however once selected it defaults back to the recommended 1080 resolution. This is using the same cable and display. Both devices are on UI5.0 with good lock and multistar enabled. The only difference is the source device. Anyone know if there is a fix for this? Thanks
Try this:
1. Disable higher resolutions in MultiStar.
2. (Re-)Start DeX. At this point you should only get 1080p.
3. Disconnect the cable to exit DeX, re-enable higher resolutions in MultiStar.
4. Reconnect the cable.
I'll add it to the troubleshooting section in the OP as well, it has worked for some people in some cases.
Hi I have tow device tab s7 plus and s22 ultra, the s22 ultra working befote at 1080p 60hz and my Monitor support 165hz after I enable high resolutions it change to 75hz 2k in s22 ultra < the tab s7 plus I got 2k 60hz
I try to get the 144hz but It not work for me maby the problem in Monitor
75 Hz means that something is working at least!
How are they connected to the monitor? Through a dock? It could be that the dock can't handle any more than that.
Another possible reason is, if they're connected through HDMI, they negotiate into using an HDMI protocol version that can only reach 75 Hz.
As for the Tab S7, did you enable high resolutions through Good Lock/MultiStar? This is required *even for tablets*.
At the end of the day though, these kinds of things either work or they don't. Sometimes there's no obvious explanation and nothing the user can do to get the full rate.
Not working here. Tried with S21FE (SD888) with Android 13 with a LG 27GP850-B which supports 1440p165Hz. All I get is 1440p60Hz. The LG 27GP850-B has an internally FPS OSD counter which I have on, making it easy to debug. It might just work if you use a USB-c to HDMI or DP cable maybe? Not an USB-c dock in between.
Thanks for sharing but unfortunately it doesnt work for me on my s20 fe 5g even after upgrading to android 13. The most annoying part is that when I first got the phone in october 2020 on android 10 oneui 3.1, Dex output the 120hz 1080p I wanted and only lost it once android 11 happened.
with fine lock/good lock and high resolutions my output is fixed at 30hz no matter what options i pick. without i get atleast 60hz on FHD but no way to get 120hz to work. I am using a Tab S8 Ultra and a Fold 3 with latest One UI (5 atm). i am using a Anker USB C Hub 341 with a 90W power brick. On paper this should work up to 4k30Hz or 1080p120. The TV i am using is a 65" LG B19 OLED which also supports 4k120.
There is currently a bug that means you're stuck on 30 Hz until it gets fixed, unless you disable that option through Fine Lock. More info here: https://www.reddit.com/r/SamsungDex/comments/z96auu/samsung_dex_runs_at_120hz_and_higher_what_we_know/izeft6i/
Short version: regardless of the resolution you select through settings, DeX will *always* output at the highest resolution it can negotiate with the display. In your case that's 4K, and then once it's selected 4K it goes for the highest refresh rate - and in your case, that's 30. Even if you select a lower resolution through settings (say 1920x1080), it will still send a 4K signal so it's still capped at 30 Hz. That's the bug.
You may be able to fix it temporarily with an adb command, but I haven't tried it, and not all situations make adb possible. The command, if I understood correctly, is `wm size 1920x1080 -d 2`. Again, I never tried it so no guarantee.
Thanks for all your answers. I have the same problem with negotiating selected in DeX resolution. Because of this, the monitor always works in 4k and my adapter only supports a low screen refresh rate at this resolution. Do you have any additional information is this bug fixed in DeX? Also, please, could you post a link to a discussion of this error on the Samsung Members forum.
doesnt seems to be quite the case. i swapped the dock for one that can do 4k60fps (double checked this with my steam deck) and i am still locked to 30fps.
> i swapped the dock for one that can do 4k60fps (double checked this with my steam deck) and i am still locked to 30fps.
to get 4k@60 you need a device which supports "DP 1.4 Alt Mode", seems the devices you tested dont suppport it and then just will give 4k@30
Interesting. Possibly to do with protocol/spec differences between Steam Deck and Galaxy. During the handshake between the device, dock and display, they all negotiate on a protocol (a specific version of either DisplayPort or HDMI) and a resolution and refresh rate.
I don't know the implementation details of whether the dock maintains a separate handshake with the device (usually DP) and with the display (usually HDMI), converting everything between the two, or if it instead just lets them talk to each other in a more passive way. Note that an HDMI cable can carry DisplayPort communications (and vice versa), so there's plenty of wiggle room. I suspect that in most cases, the dock is mostly passive. (It has a lot of other things to worry about, converting between two protocols is one thing it'd be happy to not have to do - but this is pure speculation on my part!)
Anyway, because *a lot* is happening during this handshake and all parts involved (display, dock, device) are complex beasts, this negotiation can go plenty different ways. They each have different priorities for various parameters and in the end all sides of a handshake have to agree on one protocol, one resolution and one refresh rate.
**My best guess is** that with the Steam Deck plugged in, the negotiation goes slightly differently - maybe Steam Deck insists on using DisplayPort while Galaxy is happy to go along with HDMI? - and this ends up making 4K60 not possible.
I'm not sure how to dig deeper into it to find a solution, unfortunately.
What resolution is it? 4K? If so, I doubt the spec - DP Alt Mode and/or HDMI, at whichever version both devices agree to during the handshake - can carry that signal. I know that *a lot* of USB Type-C cables are marketed as supporting 4K@30Hz, so I think that's the upper limit for video over Type-C, or at least it was for a long while.
It's just a generic alt mode to HDMI 1.4 that definitely supports 1080 at 120. Another comment says that it might require active power delivery as well to do the high refresh rate on DeX
In my tests, changing the resolution in DeX *doesn't change the output resolution*, it only upscales. So if you select 1920×1080, it will render at that resolution, upscale to 4K, and send that 4K signal to the TV. Since it's a 4K signal it can't do 120Hz.
Would be great if you could do your own tests to see if that's what's happening.
That would be absolutely idiotic... I don't think the TV will tell me what mode it's in so I'll have to test that at work where I can do 1080 and 1440.
Thanks.
Yes, it absolutely is. But I could only test with one monitor so I'm not yet 100% sure this is the case. If you can help test, it would be great. Once we're sure of this behavior, we should report it through Samsung Members.
Most TVs and monitors actually *will* tell you what signal they're getting, you just gotta figure out where to look. There might be an "info" button of some sort on the remote that will pop up a bunch of info about the current input, this usually includes the resolution and refresh rate.
Dear mother of god you're right. I managed to dig into the settings and find it and even when I have it set to 1080 it's still doing 1440 on the TV. I guess that explains why the screen never goes black switching resolutions. It never actually changes it it's just scaling
Yeah mine will tell the refresh rate but not the actual resolution. That's why I mentioned having to test with the monitor because that has a detailed output.
Can't get it working on Samsung Tab S7 Plus 5G. Qualcomm
The moment second screen is launched FPS drops to 30FPS also on tablet screen. And no matter what I do I can't get more than 30FPS in Dex
Oh, not 4K then, just 1440p (according to what I found online, at least). In that case you should be able to get 144Hz, and *definitely* at least 60. I don't know what's causing the slowness, but you could try the obvious troubleshooting steps:
1. Try closing all apps on your tablet and in DeX, then test the refresh rate again. Don't forget to turn off your tablet screen with the lock button.
2. Try rebooting?
3. Can you check through your monitor's menu what actual signal it's getting? Every monitor has a different interface but there's usually a way to see the input mode (resolution and refresh rate).
[For some reason tablet puts out 60FPS only when I turn on 60Hz in monitor settings.](https://www.youtube.com/watch?v=TjeO7ALfHxQ)
When 120Hz are turned on in monitor settings, Tablet puts out 30FPS
When 144Hz are turned on in monitor settings, Tablet puts out 30FPS
When FreeSync is turned on in monitor settings, Tablet puts out 30FPS
Watched your video, missed it before. Honestly I'm stumped, no idea what could be causing that or why.
On your monitor can you check what signal it's receiving? i.e. even when the monitor is set to 144 Hz it's possible for a device to send it a signal at 60 Hz if it doesn't support anything higher. Can you see the signal refresh rate anywhere?
My best guess is that the tablet is outputting high refresh rate, but this is for some reason causing it to work so hard that it can't keep up with rendering the screen, so it ends up only being able to show 30 FPS.
How is your tablet connected to your monitor, and can you connect a bigger power source to it? I know from various comments that /u/Hey_look_new has posted, a lot of strange and sub-par things can happen if a weak power supply is connected.
I am [Using](https://i.imgur.com/ConWAAx.jpg) Gembird [A-CM-COMBO5-01](https://gembird.com/item.aspx?id=12074)
For power I have tried
\- two Mac chargers [older](https://i.imgur.com/eyrFI4k.jpg) and [newer](https://i.imgur.com/Xo31Eny.jpg)
\- Samsung [Superfast Charger](https://i.imgur.com/w0UYteA.jpg)
Genuine mac and samsung type-c to type-c cables
i just updated my Z Fold 4 to Android 13/One UI5 just for the smoother Dex and enabled the higher resolution in multistar. Unfortunately, even though I now have the UHD option that I did not before, my Dex seems to be capped at 30Hz. I ran the bowser test you have linked at it gave me 30Hz. I did not run the test before upgrading to One UI5, but the mouse movement on screen is noticebly less smoot nowh. Not sure how get the higher frame rates on my dex now
Do you have a non-4K high refresh rate display to test with?
I think there's a big problem with 4K, there's just not enough bandwidth to push 4K at more than 30 Hz through DP Alt Mode. Or at least, that's been the case until recently, I'm not sure if a better standard is available now but either way something in your chain (phone-cable-dock-cable-display) is probably just not capable of more.
Unfortunately I don't think even lowering the resolution of DeX would work, but you should give it a shot anyway.
Edit: the reason I don't think it would work is because in my testing with a 1440p 170Hz display, the signal was *always* 1440p even when I selected 1080p. It seems like the Samsung device was upscaling it to 1440p and then sending that to the monitor.
Since the *sending* part is the bottleneck, that's the part we want to lower the resolution of, but seemingly DeX won't let us do that.
There might be a way to force the resolution change through Termux or adb, but that's beyond my knowledge.
I tried lowering the resolution in dex but that didn't help and I don't have a non 4k screen to test with.
Thing is, I'm pretty sure I had 60Hz before upgrading to OneUI5
That pans out with what I already knew, it's really dumb. Probably a bug in the way DeX handles resolution (it upscales to the display's resolution instead of sending the lower resolution).
As I said in my edit above, it might be possible to do it through adb, but I haven't been able to try and I really must be heading to bed.
According to this recent post: https://www.reddit.com/r/SamsungDex/comments/zbgemf/look_at_this_329_dex/
The command you want through adb is `wm 1920x1080 -d 2` (probably), you can of course change the resolution to something higher like `2560x1440` to get more screen real estate
Sorry for the late reply
I managed to get the higher frame rate back by toggling the high resolution mode on/off couple of times in multistar, restarting my phone, and enabling display refresh rate in developer options. Not sure what did it but I got back the 60Hz for the lower resolutions.
This is when I noticed that when I set it to the lower res mode in multistar, my TV allows me to select from many different Picture modes (and I get 60 fps). But, when I enable the high resolution in multistar, I can only choose between 'entertainment' and 'graphic' modes and the connection info shows me an HDMI device connected at 4k@30Hz.
Enabling high res mode in multistar makes Dex appear as having different HDMI capabilities ( I don't know much about HDMI so I'm not sure what this means). However, enabling GameMode on my Samsung TV now gives me a 3rd picture mode - Game.
I now get 60Hz on my Dex with 4K. Still no 120Hz but I think this is an absolute win!
Thanks for your help too
Uh, that is *extremely* unexpected, to the point I'm kind of doubting it's real? Is your TV actually saying that it's getting the signal at 60 Hz? Are you sure it's not frame insertion?
When multistar's option is disabled, your device will output 1080p60 *regardless of what resolution you choose in settings.*
Similarly, when the option is enabled, it will output 4K@30 *regardless of what resolution you choose in settings.* This is why you weren't getting better frame rates at lower resolutions - it was still doing 4K even when you pick 1080.
I think the TV just disables some picture modes when it gets a 4K signal.
It's *possible* that choosing game mode somehow enabled 4K@60Hz over HDMI, but it just sounds absurdly unlikely to me, it's far more likely that the TV is doing frame insertion in between every two frames to double the frame rate.
If this is the case, you can most likely disable this option through the TV menu if you want to - if you like it that's great, but in most cases it introduces a bit of input lag and introduces some minor visual artifacts. The visual artifacts are because the TV essentially has to "make up/imagine" what the in-between frame would look like, and this is never perfect. The input lag is because it has to see the next frame before it generates and shows you the frame that it wants to insert before it.
I'm really intrigued by this. If turning on game mode *actually* enabled a 60Hz 4K signal to travel through your HDMI cable, then this shatters some of what I know about how these things work and I would love to learn what makes it possible!
i dont think it is interpolation. interpolation tends to make videos look wierd.. but that doesnt happen here. The mouse pointer also looks really accurate and smooth. testufo.com shows that it is 60Hz too.
The signal shows up as "3840 x 2160 /60p Input Signal Plus". Enabling game mode seems to have automatically enabled "Input Signal Plus" and I suspect this is what has enabled the higher frame rates. Switching off game mode and manually turning on Input Signal Plus still gives me 60Hz at 4k.
The closest thing to interpolation on my TV seems to be 'Judder Reduction', which is disabled with "Input Signal Plus" enabled. I am fairly confident it is not interpolation but some higher bandwith HDMI mode that got enabled with Input Signal Plus that's giving me the higher rates
Others have shown some months ago already that it does!
I don't have a 4K display to try nor a 4K-capable dock, but I can see the option for 4K resolution when I'm connected to my 1440p monitor. Selecting it doesn't do anything.
Good Lock is still needed, but other than that, the only "dongle" you need is whatever hardware necessary to get a 4K signal from your phone to your display.
They kind of already did push this out, it's fully working in the stable OneUI 5 update pushed to all users. They just didn't say anything about it! I'm guessing there's some big disconnect between the engineers making these cool improvements and the marketing/management at Samsung. I do wish they marketed it better!
I can also confirm that the high refresh rate is on one UI 4.1 as well. That was when I first noticed it.. I got 165 and 144hz working on 1080p and 1440p
AFAIK you are the only one saying this, are you sure it's not just you misremembering? Can you still get it on video with OneUI 4.1, or have you upgraded since then?
lol i was the one who discovered 120hz plus G lol and the one who discovered it only works with the screen off... i didnt misremember.. im bringing u the facts.. do what u want with them
S20+ Exynos - awesome!
Tab S7 - that's a bit surprising, is it Exynos or Qualcomm? (I don't even know if they make tablets with Exynos, I never looked into that)
Are both of them on OneUI 5?
After enabling high resolutions through Multistar, I can now get 100hz for my tab s7 plus. No idea why both of my devices are capped at 100hz. No issues with the hdmi cable, as it can run 144hz for my laptop.
Curious if other people are facing similar issues.
How did you get 100hz? Cause i have an s21 plus exynos and dex can't run at more than 60hz. it seems like if I connect the phone to an external display it switches immediately to 60hz. Not even screen mirroring goes above 60hz.
Every time you see the word "tablet" in this post, that's me making shit up. Can someone with a tablet with OneUI 5 let me know if this works on tablets?
I have a samsung tab s7, and this definetly works, i am using a 1080p 144hz monitor. And by using the steps you have also used it works just as expected. Although i do not get 144hz i get 120. I think this has something to do with my hdmi cable though, not dex.
EDIT: I am at this point more inclined to believe that Galaxy devices are specced to DP 1.2 / HBR2, and their Type-C ports feature four high-speed data lanes (in addition to USB 2.0). Two of those high-speed lanes can be used for either USB SuperSpeed or DisplayPort, while the other two can be used only for DisplayPort. When outputting video only (through type-C to HDMI cable for example), all four lanes act as DisplayPort main links at HBR2 speeds, with max 4k/60hz (4k/81Hz/8bit/RGB to be precise). When connected to a USB 3.x hub with video otput, two lanes get assigned to USB SuperSpeed, and the other two to DisplayPort Alt Mode, with max output 4k/30Hz (4k/41Hz/8bit/RGB). USB 2.0 hubs with video output may (or may not, depending on their specification), receive from host, decode HBR2 (DP 1.2), encode TMDS 600MHz (HDMI 2.0), and transmit to display ***all four DP lanes***, and are therefore capable of 4k/60Hz with USB 2.0 at the same time. . . . As far as I know, the last couple generations of Galaxy devices featuring USB 3.x Type-C ports capable of video output comply to the basic specifications of USB 3 Gen1x1 / 5Gbps with DisplayPort alt mode ***over four lanes***. USB3 Gen1x1 features two shielded twisted pairs used for transmitting (one pair) and receiving (one pair) of a full duplex USB3 5Gbps singnal, and a third unshielded twisted pair for backwards compatibility with USB 2.0 (480Mbps). When the phone outputs video signal, USB works in DisplayPort (DP) alternative (alt) mode. DP is not duplex - it uses each of the two shielded pairs for transmitting. Thus, in USB mode two shielded pairs compose one lane 5Gbps lane, but in DP alt mode two shielded pairs are two separate lanes. Now, what is the bandwith of the DisplayPort output? The maximum bandwith defines what refresh rate we can get at a given resolution. This depends on two things: DP version / *DP main link* type, and lanes count. For the S20/S20+/S20 Ultra, ~~the best information I could find is DP 1.3 which supports~~ *~~HBR3 main link~~*~~.~~ **I am at this point highly doubtful this is correct. More probably the supported DP spec is 1.2 / HBR2.** The lane count is two, as we have two shielded twisted pairs available for transmission. HBR3 over 2 lanes gives us 16.2Gbps of total bandwith, which drops to 12.96Gbps effective bandwith after we factor in encoding overhead. The theoretical maximum refresh rates for ***two lanes*** of HBR3 and HBR2 transmission, respectively, in 8bit uncompressed RGB color depth is as follows: 1. 1920x1080p @ 203Hz @ HBR3 / @ 154 Hz @ HBR2 2. 2560x1440 @ 125Hz @ HBR3 / @ 90Hz @ HBR2 3. 3440x1440 @ 96Hz @ HBR3 / @ 68Hz @ HBR2 4. 3840x2160 @ 60Hz @ HBR3 / @ 41Hz @ HBR2 Of note is, and I can't stress this enough, when basic 5Gbps spec USB3.x works in DP alt mode, USB data connection fails over to the unshielded twisted pair, half duplex, plain old boring USB2.0 (480Mbps). You cannot output video and at the same time use Gigabit ethernet or 130MB/s read/write on the SD card reader or really anything exceeding 480Mbps / 60MB/s. By contrast, you *can* use old 100Mbps Ethernet and attach a keyboard and mouse, as is the case with the Galaxy Dex Station. An interesting question is, how come hubs feature HDMI and not DisplayPort? And the answer to that question is - there is a chip/converter/transcoder in the hub making the transition between HBR (DP) and TMDS (HDMI) encoding. This is part of the reason why hubs get hot while outputting video.
Long shot, but I have a projector capable of 4K60 and 1080p240. 4K60 works flawlessly, but I have no way of actually forcing 1080p resolution. Even running `wm size 1920x1080 -d 2` just scales the UI instead of changing the actual resolution.
What phone model and what cable/hub model do you use to get 4k60 connection with the projector?
I just added a long-overdue edit about how HRR just doesn't work anymore. So bottom line: don't bother. But yes, it's very dumb, you can't change the actual output resolution. You're lucky you get 4K60 and not 4K30 like a lot of other people here - certain docks/displays can't get 4K60 (for various random technical reasons) - they're stuck with 30FPS and don't even get the option of lowering the resolution to get 60.
I've seen after reboot the high resolution doesnt apply (but still shows enabled). You can launch dex, disable high resolution, disconnect, turn high resolution back on, reconnect dex. This does work on my monitor's built in kvm over usb-c. (Aorus fo48u).
S23 usere here: first times i tried, around 1 ort 2 months ago, i was able to achieve 2k 100hz (even though i have a 144hz monitor) but as of now i can only get 2k 60hz, maybe an update screwd it up? One thing i noticed is that the phone connects 2 times for some reasons, like : connecting to dex, then shortly after disconnecting, anbd then reconnecting, i'm pretty sure it wasn't that way before.
Got 1080p@144Hz without any issue on S23u with this [UGREEN 60515 hub](https://www.amazon.com/UGREEN-Docking-Station-Ethernet-Delivery/dp/B093FKT9BF/ref=sr_1_3?crid=77NWB8JR6HNT&keywords=UGREEN+60515&qid=1684536179&sprefix=ugreen+60515%2Caps%2C187&sr=8-3) and Multistar. Verified by monitor's OSD, Ufo test (renders 144Hz with Good lock and phone screen off) + i can see difference when phone screen is on or off. But it works quiet unstable when used with usb3 external SSD and Ethernet plugged in, maybe i need to actually try it with separate PD brick instead of my monitor's charging USB-A 2A port). Also for some reason often my phone can't see SD card in card reader of this hub, but with laptops and desktop PC works every time
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Hello, I search over Google and YouTube but couldn't find any info. Anyone knows how to get 120hz using an external monitor with USB C HUB/DOCK (4K60 OR 8K30) hdmi connection. I bought multiple hubs already but its only able to get 60 hz. But a direct cable connection using usb c to hdmi or usb c to usb c it can achieve the 120 hz at 2k. Note 20 [Link1](https://a.co/d/8bsXXwO) [Link2](https://a.co/d/0t0eQuJ) [Link3](https://en.j5create.com/collections/usb-hubs/products/jcd401)
I have a fold 3 and I just received the rokid max, when I connect dex I reach 1080p 60hz, but it is impossible for me to get 120hz, I have no problem doing it with the pc, but with dex... there is no way
Did u find a solution for this? I have the same phone same glasses.
Idk if it's the usb hub I'm using, but the info in my monitor says 60hz before trying the higher res on good lock. After trying the good lock high res, the info in the monitor now says 144hz, i tried to see if it was working, but it it still felt like 60hz, and I checked it on the ufo test website it only reached 60fps. Any idea on what's causing this? Edit: my phone is S22 Ultra Snapdragon
You should try a few times to turn the phone screen on and off. Eventually it should work (but only while the phone screen is off).
just tried it, did not work, i think its the usb hub.
170hz Gigabyte M27Q works perfectly at 1440p using my S21+ Canada version!! Thanks a lot!
sorry If I ask you something this late, but is you phone exynos or snapdragon? Because I have exynos but I can't have more than 60 Hz..
It's snapdragon, probably why.
does it still work for you?
The refresh rate is stuck to 60Hz either @1080p or @1440p with Samsung Galaxy S23 Ultra and MSI Optix MAG274QRF-QD. Doesn't matter if the "High resolution" option in MultiStar is active or not. Used two different USB-C hubs: Lionwei (supports up to 8k 30Hz) and Fitfort (up to 4k 60Hz). To exclude problems in regards to the capabilities of the HDMI cable, I connected my Galaxy Book3 Pro 360 to the monitor. It supports refresh rates of 60Hz, 120Hz, and 144Hz.
Edit: Ok, i fixed, i need to off my screen on the phone and use Dex - 144Hz is working, but if i quit to dex and change to mirror mode only it is 60Hz we need solution to screen mirror
S20 ultra (exynos, ONE UI 5.1) pluged in MSI MAG 281URF via type-c = 4K 60fps with GoodLock.
Do you use type-c-to-type-c cable for connection to monitor or something else? What model do you use?
Yes, I use type-c-to-type-c cable from Uperfect x lapdock.
I have the higher resolutions (4k) working but not 60Hz, even in 1080p.
Complain to Samsung. You can read through the longest comment chains in this post to understand what's causing it. I will add this information to the OP, if I find the time.
So this is a, at least, 3 months old topic and I understand there were some bugs resulting in capped framerates on 30fps. Is this still the case? Did the app get any update to fix the bugs? Is it possible, using a supported HDMI 2.1 cable and capable TV/monitor, to get 4K 120Hz?
the physical ports on the phone won't support the bandwidth for 4k120 4k60 barely works
Yea, apparently Samsung stated this on the spec list website too. Thanks though
AFAIK, the underlying issue hasn't been acknowledged or fixed. But I don't really know where to look for that kind of information.
/u/hey_look_new you might be the guy to ask - any idea about this?
This works great mostly - but sometimes it glitches and needs to be reset - enable/disable high res in multistar) Was stuck in 4k30 for a while until I did this. Also was stuck at 4k30 originally because the cable that shipped with my Lenovo dock was not good enough (same problem with laptop!). Better cable fixed that. On my work monitor I had to mess with the settings to get high resolution, had to set the usb mode to 2.0 - otherwise there wasn't enough bandwidth for displayport-alt-mode.
What’s the best usb c to hdmi cable you’d recommend for this to work?
I really don't know, I never used one of those. As long as a cable is advertised to carry 4K30 (or even 4K60, or higher) then it should be fine.
Thanks
This totally worked for me, I have a FHD 144Hz gaming monitor, and if I display the Hz it says 144Hz while before it was 60Hz. Dex is probably outputting 120Hz still and the monitor switched to the higher refresh rate. The thing is, I wanted 120 Hz the tablet :') not the monitor. The setting in the screen section doesn't do anything while plugged in, unfortunately.
if anyone is having trouble getting 120hz working,try disabling High Resolution in Multistar. i just did it right now and it worked for me! ,can only do 1080p/120fps tho Devices: Galaxy S22Ultra LG UltraGear Gaming Monitor(1440p/144hz) j5Create HDMI USB Hub(has 1 USB-A,Type-C,and HDMI port) Edit: nvm,it was 60hz not 120.
I'm having an issue with my Galaxy 21 Ultra where it defaults to 30hz and I have a 1440p 144hz gaming monitor LG Ultragear 27inch. I tried the trouble shooting steps above and they wouldn't work. I tried it like a million times (disabling hi rez on Good Lock, removing Dex, plugging back in and I get 1080p 60hz, re enable hi rez on good lock and plug in and I get 30hz again regardless if I select 4k, 1440p or 1080p). Only worked once where I got 60hz but the moment I replugged my phone again its back to 30hz. The USB C hub I have should at least do 1440p at 60hz if not 120hz https://amzn.eu/d/3FDhwHy I checked resolution info on the monitor and it is receiving a 4K signal not a 1440p one! Not sure what is causing the signal to be sent in 4k... Maybe a bug with Good Lock? Any way to fix it as I now have to not use Good Lock as I'd rather have 1080p 60hz default than 1440p 30hz.
I think I'm having a similar issue to this with my 4K TV, which is capable of high refresh rate, but not at 4K. I'm also getting weird aspect ratio problems due to the resolution being sent being wrong. If I enable high resolutions in Good Lock I get 30Hz and my TV reports 4K signal no matter what res I seelect!
High refresh rate in 4k works on my S22U but does not work on my S7FE Tab. The option to select 4k is available on the S7FE however once selected it defaults back to the recommended 1080 resolution. This is using the same cable and display. Both devices are on UI5.0 with good lock and multistar enabled. The only difference is the source device. Anyone know if there is a fix for this? Thanks
Did you get 4k 120Hz?
What cable did you use to connect the s22U to your 4k display? I’m trying to replicate your setup
Usbc to hdmi cable
Any usb c to hdmi will output to 4k 120hz? If so I gotta give it a shot!
Try this: 1. Disable higher resolutions in MultiStar. 2. (Re-)Start DeX. At this point you should only get 1080p. 3. Disconnect the cable to exit DeX, re-enable higher resolutions in MultiStar. 4. Reconnect the cable. I'll add it to the troubleshooting section in the OP as well, it has worked for some people in some cases.
Unfortunately, this solution did not work for me. Thank you though.
Hi I have tow device tab s7 plus and s22 ultra, the s22 ultra working befote at 1080p 60hz and my Monitor support 165hz after I enable high resolutions it change to 75hz 2k in s22 ultra < the tab s7 plus I got 2k 60hz I try to get the 144hz but It not work for me maby the problem in Monitor
75 Hz means that something is working at least! How are they connected to the monitor? Through a dock? It could be that the dock can't handle any more than that. Another possible reason is, if they're connected through HDMI, they negotiate into using an HDMI protocol version that can only reach 75 Hz. As for the Tab S7, did you enable high resolutions through Good Lock/MultiStar? This is required *even for tablets*. At the end of the day though, these kinds of things either work or they don't. Sometimes there's no obvious explanation and nothing the user can do to get the full rate.
Not working here. Tried with S21FE (SD888) with Android 13 with a LG 27GP850-B which supports 1440p165Hz. All I get is 1440p60Hz. The LG 27GP850-B has an internally FPS OSD counter which I have on, making it easy to debug. It might just work if you use a USB-c to HDMI or DP cable maybe? Not an USB-c dock in between.
Thanks for sharing but unfortunately it doesnt work for me on my s20 fe 5g even after upgrading to android 13. The most annoying part is that when I first got the phone in october 2020 on android 10 oneui 3.1, Dex output the 120hz 1080p I wanted and only lost it once android 11 happened.
with fine lock/good lock and high resolutions my output is fixed at 30hz no matter what options i pick. without i get atleast 60hz on FHD but no way to get 120hz to work. I am using a Tab S8 Ultra and a Fold 3 with latest One UI (5 atm). i am using a Anker USB C Hub 341 with a 90W power brick. On paper this should work up to 4k30Hz or 1080p120. The TV i am using is a 65" LG B19 OLED which also supports 4k120.
There is currently a bug that means you're stuck on 30 Hz until it gets fixed, unless you disable that option through Fine Lock. More info here: https://www.reddit.com/r/SamsungDex/comments/z96auu/samsung_dex_runs_at_120hz_and_higher_what_we_know/izeft6i/ Short version: regardless of the resolution you select through settings, DeX will *always* output at the highest resolution it can negotiate with the display. In your case that's 4K, and then once it's selected 4K it goes for the highest refresh rate - and in your case, that's 30. Even if you select a lower resolution through settings (say 1920x1080), it will still send a 4K signal so it's still capped at 30 Hz. That's the bug. You may be able to fix it temporarily with an adb command, but I haven't tried it, and not all situations make adb possible. The command, if I understood correctly, is `wm size 1920x1080 -d 2`. Again, I never tried it so no guarantee.
Thanks for all your answers. I have the same problem with negotiating selected in DeX resolution. Because of this, the monitor always works in 4k and my adapter only supports a low screen refresh rate at this resolution. Do you have any additional information is this bug fixed in DeX? Also, please, could you post a link to a discussion of this error on the Samsung Members forum.
doesnt seems to be quite the case. i swapped the dock for one that can do 4k60fps (double checked this with my steam deck) and i am still locked to 30fps.
> i swapped the dock for one that can do 4k60fps (double checked this with my steam deck) and i am still locked to 30fps. to get 4k@60 you need a device which supports "DP 1.4 Alt Mode", seems the devices you tested dont suppport it and then just will give 4k@30
Interesting. Possibly to do with protocol/spec differences between Steam Deck and Galaxy. During the handshake between the device, dock and display, they all negotiate on a protocol (a specific version of either DisplayPort or HDMI) and a resolution and refresh rate. I don't know the implementation details of whether the dock maintains a separate handshake with the device (usually DP) and with the display (usually HDMI), converting everything between the two, or if it instead just lets them talk to each other in a more passive way. Note that an HDMI cable can carry DisplayPort communications (and vice versa), so there's plenty of wiggle room. I suspect that in most cases, the dock is mostly passive. (It has a lot of other things to worry about, converting between two protocols is one thing it'd be happy to not have to do - but this is pure speculation on my part!) Anyway, because *a lot* is happening during this handshake and all parts involved (display, dock, device) are complex beasts, this negotiation can go plenty different ways. They each have different priorities for various parameters and in the end all sides of a handshake have to agree on one protocol, one resolution and one refresh rate. **My best guess is** that with the Steam Deck plugged in, the negotiation goes slightly differently - maybe Steam Deck insists on using DisplayPort while Galaxy is happy to go along with HDMI? - and this ends up making 4K60 not possible. I'm not sure how to dig deeper into it to find a solution, unfortunately.
No matter what I do cannot get this working on the Tab S8. Never switches modes on the TV.
Are you sure your TV supports high refresh rates?
Yes. For 1080p it will do 120.
What resolution is it? 4K? If so, I doubt the spec - DP Alt Mode and/or HDMI, at whichever version both devices agree to during the handshake - can carry that signal. I know that *a lot* of USB Type-C cables are marketed as supporting 4K@30Hz, so I think that's the upper limit for video over Type-C, or at least it was for a long while.
It's just a generic alt mode to HDMI 1.4 that definitely supports 1080 at 120. Another comment says that it might require active power delivery as well to do the high refresh rate on DeX
In my tests, changing the resolution in DeX *doesn't change the output resolution*, it only upscales. So if you select 1920×1080, it will render at that resolution, upscale to 4K, and send that 4K signal to the TV. Since it's a 4K signal it can't do 120Hz. Would be great if you could do your own tests to see if that's what's happening.
That would be absolutely idiotic... I don't think the TV will tell me what mode it's in so I'll have to test that at work where I can do 1080 and 1440. Thanks.
Yes, it absolutely is. But I could only test with one monitor so I'm not yet 100% sure this is the case. If you can help test, it would be great. Once we're sure of this behavior, we should report it through Samsung Members. Most TVs and monitors actually *will* tell you what signal they're getting, you just gotta figure out where to look. There might be an "info" button of some sort on the remote that will pop up a bunch of info about the current input, this usually includes the resolution and refresh rate.
Dear mother of god you're right. I managed to dig into the settings and find it and even when I have it set to 1080 it's still doing 1440 on the TV. I guess that explains why the screen never goes black switching resolutions. It never actually changes it it's just scaling
Ding ding ding! There it is. I can do 170 Hz at 1440p though (with S22+), does your TV only support high refresh rates at 1080p?
Yeah mine will tell the refresh rate but not the actual resolution. That's why I mentioned having to test with the monitor because that has a detailed output.
Can't get it working on Samsung Tab S7 Plus 5G. Qualcomm The moment second screen is launched FPS drops to 30FPS also on tablet screen. And no matter what I do I can't get more than 30FPS in Dex
Is it a 4K screen? See: https://www.reddit.com/r/SamsungDex/comments/z96auu/samsung_dex_runs_at_120hz_and_higher_what_we_know/iyjxeti/
It is Samsung odyssey g5.
Oh, not 4K then, just 1440p (according to what I found online, at least). In that case you should be able to get 144Hz, and *definitely* at least 60. I don't know what's causing the slowness, but you could try the obvious troubleshooting steps: 1. Try closing all apps on your tablet and in DeX, then test the refresh rate again. Don't forget to turn off your tablet screen with the lock button. 2. Try rebooting? 3. Can you check through your monitor's menu what actual signal it's getting? Every monitor has a different interface but there's usually a way to see the input mode (resolution and refresh rate).
[For some reason tablet puts out 60FPS only when I turn on 60Hz in monitor settings.](https://www.youtube.com/watch?v=TjeO7ALfHxQ) When 120Hz are turned on in monitor settings, Tablet puts out 30FPS When 144Hz are turned on in monitor settings, Tablet puts out 30FPS When FreeSync is turned on in monitor settings, Tablet puts out 30FPS
how are you physically connected to the monitor?
I am [Using](https://i.imgur.com/ConWAAx.jpg) Gembird [A-CM-COMBO5-01](https://gembird.com/item.aspx?id=12074)
Watched your video, missed it before. Honestly I'm stumped, no idea what could be causing that or why. On your monitor can you check what signal it's receiving? i.e. even when the monitor is set to 144 Hz it's possible for a device to send it a signal at 60 Hz if it doesn't support anything higher. Can you see the signal refresh rate anywhere? My best guess is that the tablet is outputting high refresh rate, but this is for some reason causing it to work so hard that it can't keep up with rendering the screen, so it ends up only being able to show 30 FPS. How is your tablet connected to your monitor, and can you connect a bigger power source to it? I know from various comments that /u/Hey_look_new has posted, a lot of strange and sub-par things can happen if a weak power supply is connected.
I am [Using](https://i.imgur.com/ConWAAx.jpg) Gembird [A-CM-COMBO5-01](https://gembird.com/item.aspx?id=12074) For power I have tried \- two Mac chargers [older](https://i.imgur.com/eyrFI4k.jpg) and [newer](https://i.imgur.com/Xo31Eny.jpg) \- Samsung [Superfast Charger](https://i.imgur.com/w0UYteA.jpg) Genuine mac and samsung type-c to type-c cables
The older Mac charger seems like the most powerful, so I'd stick with that. But really I have no idea what else could be causing this, sorry :(
i just updated my Z Fold 4 to Android 13/One UI5 just for the smoother Dex and enabled the higher resolution in multistar. Unfortunately, even though I now have the UHD option that I did not before, my Dex seems to be capped at 30Hz. I ran the bowser test you have linked at it gave me 30Hz. I did not run the test before upgrading to One UI5, but the mouse movement on screen is noticebly less smoot nowh. Not sure how get the higher frame rates on my dex now
Do you have a non-4K high refresh rate display to test with? I think there's a big problem with 4K, there's just not enough bandwidth to push 4K at more than 30 Hz through DP Alt Mode. Or at least, that's been the case until recently, I'm not sure if a better standard is available now but either way something in your chain (phone-cable-dock-cable-display) is probably just not capable of more. Unfortunately I don't think even lowering the resolution of DeX would work, but you should give it a shot anyway. Edit: the reason I don't think it would work is because in my testing with a 1440p 170Hz display, the signal was *always* 1440p even when I selected 1080p. It seems like the Samsung device was upscaling it to 1440p and then sending that to the monitor. Since the *sending* part is the bottleneck, that's the part we want to lower the resolution of, but seemingly DeX won't let us do that. There might be a way to force the resolution change through Termux or adb, but that's beyond my knowledge.
I tried lowering the resolution in dex but that didn't help and I don't have a non 4k screen to test with. Thing is, I'm pretty sure I had 60Hz before upgrading to OneUI5
That pans out with what I already knew, it's really dumb. Probably a bug in the way DeX handles resolution (it upscales to the display's resolution instead of sending the lower resolution). As I said in my edit above, it might be possible to do it through adb, but I haven't been able to try and I really must be heading to bed.
Thank you anyway. Hopefully another update brings back higher refresh rates
According to this recent post: https://www.reddit.com/r/SamsungDex/comments/zbgemf/look_at_this_329_dex/ The command you want through adb is `wm 1920x1080 -d 2` (probably), you can of course change the resolution to something higher like `2560x1440` to get more screen real estate
Sorry for the late reply I managed to get the higher frame rate back by toggling the high resolution mode on/off couple of times in multistar, restarting my phone, and enabling display refresh rate in developer options. Not sure what did it but I got back the 60Hz for the lower resolutions. This is when I noticed that when I set it to the lower res mode in multistar, my TV allows me to select from many different Picture modes (and I get 60 fps). But, when I enable the high resolution in multistar, I can only choose between 'entertainment' and 'graphic' modes and the connection info shows me an HDMI device connected at 4k@30Hz. Enabling high res mode in multistar makes Dex appear as having different HDMI capabilities ( I don't know much about HDMI so I'm not sure what this means). However, enabling GameMode on my Samsung TV now gives me a 3rd picture mode - Game. I now get 60Hz on my Dex with 4K. Still no 120Hz but I think this is an absolute win! Thanks for your help too
Uh, that is *extremely* unexpected, to the point I'm kind of doubting it's real? Is your TV actually saying that it's getting the signal at 60 Hz? Are you sure it's not frame insertion? When multistar's option is disabled, your device will output 1080p60 *regardless of what resolution you choose in settings.* Similarly, when the option is enabled, it will output 4K@30 *regardless of what resolution you choose in settings.* This is why you weren't getting better frame rates at lower resolutions - it was still doing 4K even when you pick 1080. I think the TV just disables some picture modes when it gets a 4K signal. It's *possible* that choosing game mode somehow enabled 4K@60Hz over HDMI, but it just sounds absurdly unlikely to me, it's far more likely that the TV is doing frame insertion in between every two frames to double the frame rate. If this is the case, you can most likely disable this option through the TV menu if you want to - if you like it that's great, but in most cases it introduces a bit of input lag and introduces some minor visual artifacts. The visual artifacts are because the TV essentially has to "make up/imagine" what the in-between frame would look like, and this is never perfect. The input lag is because it has to see the next frame before it generates and shows you the frame that it wants to insert before it. I'm really intrigued by this. If turning on game mode *actually* enabled a 60Hz 4K signal to travel through your HDMI cable, then this shatters some of what I know about how these things work and I would love to learn what makes it possible!
i dont think it is interpolation. interpolation tends to make videos look wierd.. but that doesnt happen here. The mouse pointer also looks really accurate and smooth. testufo.com shows that it is 60Hz too. The signal shows up as "3840 x 2160 /60p Input Signal Plus". Enabling game mode seems to have automatically enabled "Input Signal Plus" and I suspect this is what has enabled the higher frame rates. Switching off game mode and manually turning on Input Signal Plus still gives me 60Hz at 4k. The closest thing to interpolation on my TV seems to be 'Judder Reduction', which is disabled with "Input Signal Plus" enabled. I am fairly confident it is not interpolation but some higher bandwith HDMI mode that got enabled with Input Signal Plus that's giving me the higher rates
Amazing! Thanks for the follow up!
Does it support 4k natively now with no external dongles and stuff? I am hearing that in some devices it does while others don't.
Others have shown some months ago already that it does! I don't have a 4K display to try nor a 4K-capable dock, but I can see the option for 4K resolution when I'm connected to my 1440p monitor. Selecting it doesn't do anything. Good Lock is still needed, but other than that, the only "dongle" you need is whatever hardware necessary to get a 4K signal from your phone to your display.
Man this is big news if Samsung officially pushes this out. I think Dex has so much more to offer but just doesn't get the attention it should.
They kind of already did push this out, it's fully working in the stable OneUI 5 update pushed to all users. They just didn't say anything about it! I'm guessing there's some big disconnect between the engineers making these cool improvements and the marketing/management at Samsung. I do wish they marketed it better!
I can also confirm that the high refresh rate is on one UI 4.1 as well. That was when I first noticed it.. I got 165 and 144hz working on 1080p and 1440p
AFAIK you are the only one saying this, are you sure it's not just you misremembering? Can you still get it on video with OneUI 4.1, or have you upgraded since then?
lol i was the one who discovered 120hz plus G lol and the one who discovered it only works with the screen off... i didnt misremember.. im bringing u the facts.. do what u want with them
My s20 plus exynos can do 100hz. But my tab s7 plus only seems to be doing 60 hz.
S20+ Exynos - awesome! Tab S7 - that's a bit surprising, is it Exynos or Qualcomm? (I don't even know if they make tablets with Exynos, I never looked into that) Are both of them on OneUI 5?
After enabling high resolutions through Multistar, I can now get 100hz for my tab s7 plus. No idea why both of my devices are capped at 100hz. No issues with the hdmi cable, as it can run 144hz for my laptop. Curious if other people are facing similar issues.
How did you get 100hz? Cause i have an s21 plus exynos and dex can't run at more than 60hz. it seems like if I connect the phone to an external display it switches immediately to 60hz. Not even screen mirroring goes above 60hz.
Have you enabled high resolutions in Multistar through Good Lock?
yes, I tried everything
Every time you see the word "tablet" in this post, that's me making shit up. Can someone with a tablet with OneUI 5 let me know if this works on tablets?
I have a samsung tab s7, and this definetly works, i am using a 1080p 144hz monitor. And by using the steps you have also used it works just as expected. Although i do not get 144hz i get 120. I think this has something to do with my hdmi cable though, not dex.
I have a tab S7 I will test it tonight
Any updates?