https://bugs.kde.org/show_bug.cgi?id=482277
Bug ID: 482277 Summary: Plasma/KWin behaviors weird, even crashes when waking up an 4K external display. Classification: Plasma Product: kwin Version: 5.27.10 Platform: Arch Linux OS: Linux Status: REPORTED Severity: crash Priority: NOR Component: compositing Assignee: kwin-bugs-n...@kde.org Reporter: liusish...@gmail.com Target Milestone: --- Created attachment 166335 --> https://bugs.kde.org/attachment.cgi?id=166335&action=edit journald log of the kwin crash. SUMMARY Almost every time I wake up my external 4K display, I can immediately see a lot of glitched windows, and the system is temporarily unresponsive. Most times, plasma can sooner restore everything so I can continue working. But, sometimes the plasma can not restore. It crashed and all the windows already opened are gone. Sometimes, both kwin and plasma do not survive, and my system sends me back to sddm login screen. I have attached the journald log and backtrace of one recent kwin crash and two backtraces of plsama crashes which happened several days ago. This problem has bugged me for at least 5 months, and after searching for a long time I still don't understand what has happened. STEPS TO REPRODUCE 1. Wait for the display to automatically switch off. 2. Use the mouse to wake up the display. OBSERVED RESULT A lot of glitches, sometimes the desktop and the compositor crashes. EXPECTED RESULT Plasma should work without any glitches and crashes. SOFTWARE/OS VERSIONS PC: Intel NUC 12 PRO featuring an i5-1240p Linux: Arch Linux Kernel: 6.7.6-zen1-2-zen Graphics Platform: wayland KDE Plasma Version: 5.27.10 KDE Frameworks Version: 5.115.0 Qt Version: 5.15.12 ADDITIONAL INFORMATION -- You are receiving this mail because: You are watching all bug changes.