SUMMARY Monitor reports no signal after being turned off and on again when any fullscreen (borderless) application (Wayland or XWayland) is in focus. Hitting the super key to bring up the application launcher brings back picture and switching focus to a window with a border is also fine. Switching focus back to a borderless application gives no signal to the monitor again. Restarting the desktop solves this until the monitor is restarted. This is common for me as my OLED monitor needs to do a pixel refresh every so often which involves turning it off and on again. STEPS TO REPRODUCE 1. Open a fullscreen application (Steam games, YouTube fullscreen, etc.) 2. Turn the monitor off and on again OBSERVED RESULT The picture will not return as long as the fullscreen app is in focus. EXPECTED RESULT The picture returns displaying the fullscreen app as it was when the monitor was turned off. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: CachyOS (Plasma Wayland) (available in About System) KDE Plasma Version: 6.1.1 KDE Frameworks Version: 6.3.0 Qt Version: 6.7.2 ADDITIONAL INFORMATION Nvidia proprietary driver with a single monitor hooked up via DisplayPort.
If you set KWIN_DRM_NO_DIRECT_SCANOUT=1 for KWin, does the problem go away?
(In reply to Zamundaaa from comment #1) > If you set KWIN_DRM_NO_DIRECT_SCANOUT=1 for KWin, does the problem go away? I set it in /etc/environment and restarted but it doesn't seem to have helped unfortunately.
Okay. Do you have adaptive sync enabled?
(In reply to Zamundaaa from comment #3) > Okay. Do you have adaptive sync enabled? Yes, disabling it has fixed the issue. Is there anything I can do to prevent this while still having adaptive sync enabled? Thank you for your help in finding the problem.
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(In reply to dirleyjordan from comment #4) > (In reply to Zamundaaa from comment #3) > > Okay. Do you have adaptive sync enabled? > > Yes, disabling it has fixed the issue. > Is there anything I can do to prevent this while still having adaptive sync > enabled? Unfortunately not that I know of. You can report it to https://forums.developer.nvidia.com/c/gpu-graphics/linux/148, and hope that NVidia fixes it.