Screen flickering and unable to wake from sleep if refresh rate set above 60.

[Stargazer512]

My monitor can natively do 4k at 144Hz but if I set it to anything over 60Hz in Chimera the screen with start to flicker on and off until I manage to reset the refresh rate to 60Hz.

Sometimes it will be stable at 72Hz, but if I let the computer go to sleep and then wake it up again the monitor will report that the resolution of the computer is not supported. The only fix is to either disconnect the monitor, or restart the PC.

This happens in both desktop and game mode.

I don't mind if gamescope runs at 60Hz, but I'd like to be able to run games at above 60, however it seems that I cannot set the refresh rate to above 60 in games if the refresh rate of gamescope is 60.

Any ideas? I'm running a AMD 6800XT.

[pastaq]

Seems like the monitor has bad EDID data. You'll need to create an EDID.bin in windows and then install it in mkinitcpio.

[Stargazer512]

Thanks! I've got the EDID, but would you be able to point me in the right direction to install it on ChimeraOS?

[rzippo]

I have a similar problem with my TV, which issually works with 4k 120hz and VRR on, but with sleep/resume I get the flickering. In my case, if I restart or pkill steam the issue is resolved

[rzippo]

I have a similar problem with my TV, which issually works with 4k 120hz and VRR on, but with sleep/resume I get the flickering. In my case, if I restart or pkill steam the issue is resolved

I tested this again on 45_5340f50, still happens.

[rzippo]

If it can help, these are the lines that appear in ~/.gamescope-stdout.log right after resume:

wlserver: [backend/session/session.c:181] udev event for card1 (change)
wlserver: [backend/session/session.c:210] DRM device card1 changed
wlserver: Got change event for KMS device
drm: Connector make SAM model QBQ90
drm: [colorimetry]: EDID with colorimetry detected. Using it
drm: [colorimetry]: r 0.669922 0.311523
drm: [colorimetry]: g 0.273438 0.659180
drm: [colorimetry]: b 0.153320 0.044922
drm: [colorimetry]: w 0.312500 0.329102
drm: CRTC 91 has no VALVE1_CRTC_REGAMMA_TF support
drm: CRTC 95 has no VALVE1_CRTC_REGAMMA_TF support
drm: CRTC 99 has no VALVE1_CRTC_REGAMMA_TF support
drm: CRTC 103 has no VALVE1_CRTC_REGAMMA_TF support
drm: CRTC 107 has no VALVE1_CRTC_REGAMMA_TF support
drm: CRTC 111 has no VALVE1_CRTC_REGAMMA_TF support

[rzippo]

Seems related: https://gitlab.freedesktop.org/drm/amd/-/issues/2966

[WeslyG]

I have a radeon rx 7800xt video card and I observe this behavior if I switch my philips 550led807 TV to 120hz + vrr game mode, if I leave it in 120hz mode (without vrr) then everything works correctly and does not flicker. I've tried 42 45 45-1 and the current version of unstable has similar behavior everywhere. Apparently vr is not working yet( As hdr didn 't work before ...