https://bugs.kde.org/show_bug.cgi?id=466777
Bug ID: 466777
Summary: Black screen kwin_wayland death
Classification: Plasma
Product: kwin
Version: 5.27.2
Platform: Ubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: mistr...@gmail.com
Target Milestone: ---
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
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