https://bugs.kde.org/show_bug.cgi?id=509304
Bug ID: 509304
Summary: SDDM fails to load after reboot when changing the
wallpaper of SDDM, closing the settings window, and
confirming choices in the popup window.
Classification: Applications
Product: systemsettings
Version First 6.4.4
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: kcm_sddm
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Target Milestone: ---
SUMMARY
SDDM fails to load after reboot when changing the wallpaper of SDDM, closing
the settings window, and confirming choices in the popup window.
STEPS TO REPRODUCE
1. Go to Settings > Login Screen (SDDM).
2. Change wallpaper type and picture
3. Close the window without pressing apply.
4. Confirm the change by putting in the password.
OBSERVED RESULT
On reboot nothing loads (a blank screen).
- now when I change wallpaper it does the same thing - but haven't at first
until i confirmed changes after closing settings window.
EXPECTED RESULT
Actualize wallpaper style and picture
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.16.5-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i5-10300H CPU @ 2.50GHz
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor 1: Mesa Intel® UHD Graphics
Graphics Processor 2: llvmpipe
Manufacturer: LENOVO
Product Name: 81Y4
System Version: IdeaPad Gaming 3 15IMH05
ADDITIONAL INFORMATION
I loaded back SDDM by:
rm -rf /usr/share/sddm/themes/*
pacman -S sddm --noconfirm
systemctl enable sddm --now
systemctl restart sddm
reboot
After that crash happened, I got those warnings on boot—they haven't
disappeared after I brought the SDDM back:
platform regulatory.0: Direct firmare load for regulatory.db falled with error
-2
spi-nor spi0.0: supply vcc not found, using dunny regulator
r8169 0000:0c:00.0: can't disable ASPM: OS doesn't have ASPM control
Bluetooth: hci0: HCI LE Coded PHY feature bit is set, but its usage is not
supported.
nvidia: loading out-of-tree module taints kernel.
nvidia: module license 'NVIDIA' taints kernel.
Disabling lock debugging due to kernel taint
nvidia: module license taints kernel
NVRM: loading NVIDIA UNIX x86_64 kernel Module 580.82.07 Wed Aug 27 18:39:48
UTC 2025
nvidia_uvm: module uses symblos nvUvmInterfacDisavleAccessCntr from proprietora
module nvidia, inheriting taint.
I previously received the same warnings after customizing the KDE shell, which
also caused it to crash (KDE shell). I reported it using the automatic report
option.
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