https://bugs.kde.org/show_bug.cgi?id=502082
Bug ID: 502082
Summary: Switching users consistently causes black screen with
cursor
Classification: Plasma
Product: kwin
Version: 6.3.3
Platform: Fedora RPMs
URL: https://discuss.kde.org/t/switching-users-randomly-cau
ses-black-screen-with-cursor/32103/7?u=rokejulianlockh
art
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: 4wy78...@rokejulianlockhart.addy.io
Target Milestone: ---
Flags: Intel-, Mesa+, NVIDIA-
Created attachment 179790
--> https://bugs.kde.org/attachment.cgi?id=179790&action=edit
A Photograph of the Black Display Visible after "Switch User" Has Been Invoked
SUMMARY
When I invoke "Switch User" (via Kicker, at least), I see a black screen,
except for my cursor. I cannot interact with the OS afterward, even to send
SysRq commands. Solely my MB's RESET_SW functions.
STEPS TO REPRODUCE
If you want to merely reproduce the uninteractibility, invoke "qdbus --system
org.freedesktop.DisplayManager /org/freedesktop/DisplayManager/Seat0
org.freedesktop.DisplayManager.Seat.SwitchToGreeter".
If you also want to reproduce the black screen, use "Switch User" (via Kicker –
I really do want to test KRunner and the Application Menu too, but I don't want
to hard-reset my OS frequently).
OBSERVED RESULT
When I invoke "qdbus --system org.freedesktop.DisplayManager
/org/freedesktop/DisplayManager/Seat0
org.freedesktop.DisplayManager.Seat.SwitchToGreeter", the OS immediately
becomes entirely uninteractible.
When I invoke "Switch User" via Kicker, the same occurs, but the display also
becomes black, except for the cursor.
EXPECTED RESULT
I should be sent to SDDM.
SOFTWARE/OS VERSIONS
I've provided the full output of KInfo, because IDK what's relevant to this
bug:
> Operating System: Fedora Linux 41
> KDE Plasma Version: 6.3.3
> KDE Frameworks Version: 6.12.0
> Qt Version: 6.8.2
> Kernel Version: 6.13.8-200.fc41.x86_64 (64-bit)
> Graphics Platform: Wayland
> Processors: 12 × AMD Ryzen 5 7600X 6-Core Processor
> Memory: 30.4 GiB of RAM
> Graphics Processor 1: AMD Radeon RX 5700
> Graphics Processor 2: AMD Radeon Graphics
> Manufacturer: ASRock
> Product Name: X670E Taichi
Otherwise, because this is about SDDM, the undermentioned packages are
installed:
- sddm-0.21.0-6.fc41.x86_64
- sddm-breeze-6.3.3-1.fc41.noarch
- plasma-desktop-6.3.3-1.fc41.x86_64
- plasma-workspace-6.3.3-1.fc41.x86_64
ADDITIONAL INFORMATION
Originally reported at
https://discuss.kde.org/t/switching-users-randomly-causes-black-screen-with-cursor/32103/7?u=rokejulianlockhart.
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