https://bugs.kde.org/show_bug.cgi?id=477948
Bug ID: 477948
Summary: VRR seems to break completely or get stuck always on
with a hybrid GPU setup
Classification: I don't know
Product: kde
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: unassigned-b...@kde.org
Reporter: kde.oq...@passmail.net
Target Milestone: ---
SUMMARY
When running games or VRRTEST on a system that is using an AMD IGPU connected
to a display with an NVidia GPU used to render games with prime-run, adaptive
sync gets stuck on or stops working altogether.
Example 1: If i have adaptive sync set to automatic then run VRRTEST
(https://github.com/Nixola/VRRTest) with or without prime-run then close
VRRTEST it freezes with the VRRTEST image stuck on screen. I then have to
switch to a virtual terminal and back so i can see my desktop.
Once back on the desktop my monitor will start flickering and the monitors HUD
will show the Hz switching between 240 and 48. If i change the display
configuration in system settings to "adaptive sync: never" it will still
continue flickering and my monitors HUD still shows the Hz switching between
240 and 48.
I can fix this by loading VRRTEST in gamescope and closing it, that stops the
flickering plus the switching between 240 and 48 Hz.
Example 2: If i run a game e.g doom eternal (but it seems to be any game) on
steam with proton but without gamescope then VRR stops working completely and i
have to log out and back in for it to start working again.
Also VRRTEST no longer freezes when closing once vrr is broken.
STEPS TO REPRODUCE
1. Launch steam game without gamescope with "prime-run %command%" as launch
options.
2. See adaptive sync isn't working in game and close game.
3. Launch VRRTEST and see that the monitors refresh rate is no longer changing
anymore to match the fps.
OBSERVED RESULT
adaptive sync not working
EXPECTED RESULT
adaptive sync working
SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.90.0
KDE Frameworks Version: 5.246.0
Qt Version: 6.6.1
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