| View previous topic :: View next topic |
| Author |
Message |
Hexorg
Tux's lil' helper
Joined: 29 Oct 2009
Posts: 116
|
 Posted: Wed Aug 03, 2022 2:28 pm Post subject: Radeon RX 5600 4K @ 120Hz? |
 |
|
I recently got a 4K 144Hz monitor and discovered that my card seemingly refuses to talk 4K @ 120 (or 144)Hz to it, while windows on the same hardware does.
| Code: | hexorg@architect ~ $ xrandr
Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384
DisplayPort-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 697mm x 392mm
3840x2160 60.00*+ 60.00 50.00 59.94 30.00 29.97
2560x1440 143.86 119.88 59.94
1920x1200 60.00
1920x1080 143.85 120.00 100.00 119.88 60.00 50.00 59.94
1600x1200 60.00 |
lspci -k reports
| Quote: | 0d:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT] (rev c1)
Subsystem: Gigabyte Technology Co., Ltd Radeon RX 5700 XT Gaming OC
Kernel driver in use: amdgpu
Kernel modules: amdgpu |
I followed the https://wiki.gentoo.org/wiki/AMDGPU article to set it up. I have no problem in any OpenGL application. Connected over Display Port cable (though I also tried HDMI 2.1 cable).
I've looked around and it seems that I need Display Stream Compression (DSC) to run 4K @ 120Hz, and I found that AMD enabled that for Navi in 2019. Does anyone know if those patches made it into gentoo drivers? Is there some kernel setting I need to enable? I'm running Linux architect 5.15.52-gentoo so the patches should be long time in it. |
|
| Back to top |
|
 |
Zucca
Moderator
Joined: 14 Jun 2007
Posts: 3345
Location: Rasi, Finland
|
| Posted: Thu Aug 04, 2022 7:44 am Post subject: |
|
|
DSC has been implemented, but for it to work on AMD GPUs it seems to need this "ODM combine" working. I don't even pretend to know what it is, but it seems to get patches from time to time.
_________________
..: Zucca :..
Gentoo IRC channels reside on Libera.Chat.
--
| Quote: | | I am NaN! I am a man! |
|
|
| Back to top |
|
|
Hexorg
Tux's lil' helper
Joined: 29 Oct 2009
Posts: 116
|
| Posted: Thu Aug 04, 2022 2:20 pm Post subject: |
|
|
| So if I'm reading this correctly - the answer is not supported yet (on stable). |
|
| Back to top |
|
|
Zucca
Moderator
Joined: 14 Jun 2007
Posts: 3345
Location: Rasi, Finland
|
| Posted: Thu Aug 04, 2022 8:52 pm Post subject: |
|
|
| Hexorg wrote: | | So if I'm reading this correctly - the answer is not supported yet (on stable). |
That's my wild guess.
_________________
..: Zucca :..
Gentoo IRC channels reside on Libera.Chat.
--
| Quote: | | I am NaN! I am a man! |
|
|
| Back to top |
|
|
|
Kernel & Hardware
