Bug 484210

Summary: kwin_kill_helper not responding
Product: [Plasma] kwin Reporter: gudvinr+kde
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED WORKSFORME    
Severity: normal CC: xaver.hugl
Priority: NOR    
Version First Reported In: 6.0.2   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: kill helper window

Description gudvinr+kde 2024-03-22 06:24:02 UTC
Created attachment 167587 [details]
kill helper window

SUMMARY

When I get "Not responding" dialog, it also becomes unresponsive.
When I try to close kwin_kill_helper, that is not responding, it also creates new kwin_kill_helper that is also "Not responding".

That makes killing unresponsive apps quite challenging.

STEPS TO REPRODUCE
1. Wait for app to freeze
2. Try to close

OBSERVED RESULT
kwin_kill_helper itself freezes

EXPECTED RESULT
kwin_kill_helper not freezing

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: 6.6.22-1-lts (64-bit)
Graphics Platform: X11
Comment 1 Zamundaaa 2024-05-02 14:08:50 UTC
Can you get a backtrace for the hanging kill helper? Should be possible with
> gdb -p $(pidof kwin_kill_helper)
and then "bt" to get the backtrace
Comment 2 gudvinr+kde 2024-05-07 13:40:09 UTC
It's kinda tricky because I don't get it very often. I didn't have unresponsive windows since May 2nd so I am just leaving a note here that I didn't miss that message.
Comment 3 Bug Janitor Service 2024-05-22 03:45:23 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 4 gudvinr+kde 2024-05-25 14:38:41 UTC
Can't say if it was fixed intentionally or unintentionally but it doesn't hang now.