SUMMARY *** • My desktop session goes completely black, returns, and eventually goes black and all I have left is a cursor. • I noticed this occurred near a "i915 0000:00:02.0: [drm] *ERROR* CPU pipe B FIFO underrun" through dmesg. • I was able to stop the pipe B FIFO underrun issue with "intel_idle.max_cstate=1" in kernel options in grub. • While that fixed the underrun, the black screen issue remained. Around the underrun there was another item "perf: interrupt took too long ([number] > [number]), lowering kernel.perf_event_max_sample_rate to [number]" . I noticed this is when kwin_wayland would fail. • I was able to recover by switching to a terminal, tty3 for instance, and running "/usr/bin/kwin_wayland --replace --socket wayland-0 --xwayland-display :1 --xwayland" . This restored tty2 and provided a login screen to return to my desktop, but all open programs were of course lost from the last session. • Kernel options in grub: nogpumanager acpi_rev_override nomodeset modprobe.blacklist=nouveau,nvidia,nvidiafb,nvidia-uvm,nvidia-drm,nvidia-modeset acpi_osi=! acpi_osi=\"Windows 2009\" intel_iommu=on,pt i915.enable_fbc=0 i915.enable_dc=2 i915.enable_guc=2 i915.lvds_channel_mode=2 i915.disable_power_well=0 i915.enable_psr=0 drm.vblankoffdelay=-1 i915.modeset=1 i915.fastboot=1 intel_idle.max_cstate=1 • Hardware: https://www.laptoparena.net/msi/notebook-msi-gaming-gs63vr-6rf(stealth-pro-4k)-022ne-gs63vr-6rf-022ne-black-12356 *** STEPS TO REPRODUCE 1. Unknown, possibly running a fullscreen 4K video from Firefox. 2. change perf value? OBSERVED RESULT kwin_wayland goes black, returns, then a later crash EXPECTED RESULT kwin_wayland does not go black SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kubuntu 22.10 KDE Plasma Version: 5.27.2 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.6
Sorry it took so long to get to your bug report. Does this still happen on newer versions of KWin? And if so, can you attach some logging from when it happens? You get get it with `journalctl --user-unit plasma-kwin_wayland --boot 0`
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!