Bug 391402

Summary: [KWin 5.5.5] Crash when opening a window
Product: [Plasma] kwin Reporter: bence.csokas
Component: platform-x11-standaloneAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED UNMAINTAINED    
Severity: normal    
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:

Description bence.csokas 2018-03-04 22:38:09 UTC 
Sometimes when a new window is opened, the system pauses for a second and then all window borders disappear. Apparently, `kwin_x11` receives a SIGSTOP.
I was able to attach GDB to the stopped process and managed to glean some info: https://pastebin.com/6sW43kyV
I haven't been using GDB a lot, so it may not have all necessary data. Let me know if there's anything else needed.
Comment 1 Martin Flöser 2018-03-05 05:16:20 UTC 
Version 5.5 is no longer supported. Please update.