https://bugs.kde.org/show_bug.cgi?id=483600
Bug ID: 483600
Summary: KDE Plasma freezes entire system when enabling second
monitor
Classification: Plasma
Product: kwin
Version: 6.0.2
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: grave
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: pigla...@gmail.com
Target Milestone: ---
SUMMARY
When starting KDE Plasma 6, my second monitor is not enabled by default. Going
to the settings menu and trying to turn on my monitor causes the entire system
to freeze to the point that I cannot even use the Ctrl+Alt+F2 command to bring
up a shell to kill Plasma and restart it. This only started happening after
upgrading to Plasma 6.0.2 from the Arch repos.
STEPS TO REPRODUCE
1. Go to System Settings, then Display Configuration
2. Click on Dell Inc. DELL M991 on menu, then click the checkmark to enable it
3. Click "Apply"
OBSERVED RESULT
System becomes entirely unresponsive, any sound that was playing loops over and
over, I can hear the second monitor turning on but nothing displays on it. I
have no choice but to hard reset the system when it happens.
EXPECTED RESULT
The second monitor comes on and I can move applications over to it.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.0.2
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.7.9-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 6800 XT
Product Name: X570 Steel Legend WiFi ax
ADDITIONAL INFORMATION
The second monitor actually works and displays the login screen when logging on
on SDDM, however the monitor gets disabled when logging into Plasma.
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