https://bugs.kde.org/show_bug.cgi?id=514641
Bug ID: 514641
Summary: PC sometimes boots to black screen
Classification: Plasma
Product: kwin
Version First 6.5.4
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: platform-drm
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
Created attachment 188546
--> https://bugs.kde.org/attachment.cgi?id=188546&action=edit
Journald log
Sometimes, when I boot my laptop (cold boot), all I can see is a black screen
after plymouth disappears. It is responsive, I can go to tty2, tty3, but tty1
is just empty.
I can even login to tty2 and try to start plasma from there, but there will be
small weirdnesses like no app.slice in systemd.
The sddm-helper-start-wayland prints these messages: (split into multiple lines
by me)
No backend specified, automatically choosing drm
Accepting client connections on sockets: QList(\"wayland-0\")
kwin_core: Failed to open drm node: \"/dev/dri/card1\"
kwin_wayland_drm: No suitable DRM devices have been found
QThreadStorage: entry 6 destroyed before end of thread 0x5591069f70a0
QThreadStorage: entry 1 destroyed before end of thread 0x5591069f70a0
QThreadStorage: entry 0 destroyed before end of thread 0x5591069f70a0
Because of that output, I presume it is something racy. Whatever it is, that
open() somehow syscall fails.
STEPS TO REPRODUCE
1. Cold boot
I’m sorry, it is very inconsistent and hard to reproduce even for me.
OBSERVED RESULT
Black screen.
EXPECTED RESULT
Login screen (sddm in my case)
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 43
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1
Kernel Version: 6.17.12-300.fc43.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 7535HS with Radeon Graphics
Memory: 16 GiB of RAM (12.7 GiB usable)
Graphics Processor: AMD Radeon 660M
ADDITIONAL INFORMATION
I’ve attached the relevant log (basically the complete life of the sddm user —
it’s pretty short).
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