https://bugs.kde.org/show_bug.cgi?id=504311
Bug ID: 504311
Summary: Desktop background and widgets go black on plasmashell
startup + occasional black screen after resuming from
lock screen
Classification: Plasma
Product: plasmashell
Version First master
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: grave
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: spaceforce-t...@hotmail.com
CC: k...@davidedmundson.co.uk
Target Milestone: 1.0
SUMMARY
This bug first appeared with the 6.3.5 update of plasma-desktop on May 8. On
startup (the exact timing and trigger seem to vary, sometimes it happens when
opening a window, sometimes after about 20 seconds, sometimes only a couple of
seconds after the desktop appears), the desktop background and plasmoids will
disappear and be replaced by solid black. Other aspects of plasmashell like
notifications still work as normal. The panel can also freeze (though it
doesn't disappear) seemingly at random. These issues can sometimes be fixed by
running "systemctl --user restart plasma-plasmashell" but often this command
takes over a minute to complete and occasionally it never completes. Inevitably
though (sometimes after several hours, sometimes minutes, sometimes
immediately), the desktop and its associated plasmoids will vanish again.
Whenever the desktop bug triggers, the system will become unresponsive for 1-2
seconds.
Another bug, which may or may not be related also appeared, related to the lock
screen. When resuming a session from the lock screen, one of two things may
happen, seemingly determined at random. The more common and benign event is
that plasmashell will crash and immediately restart (I have filed automatic
reports over this). However, there is a chance for a much more serious
error--the screen will go entirely black with an "X" cursor. At this point even
going into a tty and restarting the display manager will not work, as a new KDE
session will fail to start and dump me back into the display manager. All that
can be done is to reboot the machine.
STEPS TO REPRODUCE
Black desktop bug:
1. Boot computer.
2. Log into KDE Wayland session.
3. Use computer as normal, bug will trigger within one minute, often much less.
Lock screen bug:
1. Leave computer unattended until the lock screen appears.
2. Type in password and resume session.
OBSERVED RESULT
Black desktop bug:
Desktop background and all desktop plasmoids go black.
Lock screen bug:
Either plasmashell will crash and immediately relaunch, displaying a prompt to
file an automatic report, or the entire session goes black with an "X" cursor,
requiring the computer to be rebooted from the display manager or a tty.
EXPECTED RESULT
Desktop background and plasmoids should appear normally.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.24.0
Qt Version: 6.9.0
ADDITIONAL INFORMATION
Hardware:
Gigabyte GA-AB350 Gaming 3
AMD Ryzen 7 3800X
64 GB RAM
nVidia RTX 2070
55" LG OLED TV w/ HDR as monitor
Kernel: Linux 6.14.6-zen (64-bit)
Shell: fish 4.0.2
Display manager: SDDM 0.21.0
Window manager: Kwin (Wayland)
Video mode: 4096x2160 @ 60 Hz, HDR enabled
Driver: nvidia-open-dkms 570.144
Desktop plasmoids:
Condensed Weather at top left
Calendar immediately below.
Immediately to the left of right-hand column: browser plasmoid open to
archlinux.org news
Right-hand column: Analog clock and 6 system monitor widgets displaying various
sensor readouts.
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