Bug 437911 - xdg-desktop-portal-kde high CPU usage on login
Summary: xdg-desktop-portal-kde high CPU usage on login
Status: RESOLVED DUPLICATE of bug 433293
Alias: None
Product: xdg-desktop-portal-kde
Classification: Plasma
Component: general (show other bugs)
Version: unspecified
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Jan Grulich
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-05-31 14:03 UTC by Lyubomir
Modified: 2021-12-23 12:35 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
debug trace (9.61 KB, text/plain)
2021-05-31 14:03 UTC, Lyubomir 		Details
View All Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description Lyubomir 2021-05-31 14:03:54 UTC 
Created attachment 138907 [details]
debug trace

SUMMARY
Attaching forced SIGSEGV traceback from gdb

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 21.04
KDE Plasma Version: 5.21.90
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2
Kernel Version: 5.11.0-17-lowlatency (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7,6 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
Comment 1 Jan Grulich 2021-06-25 15:40:21 UTC 
I see only a crash in xdg-desktop-portal-kde thanks to some wayland issue. Does it happen all the time? What is your xdg-desktop-portal-kde version?
Comment 2 Jan Grulich 2021-06-25 15:42:40 UTC 
Sorry, I didn't read your comment properly, your version of xdp-kde is 5.21.90. Does it happen with Plasma 5.22.x?
Comment 3 Lyubomir 2021-06-25 15:57:14 UTC 
Ha, i guess this is one of those crashes i filed which are not due to memory segmentation but because i sent signal 11 from htop to the process xdg-desktop-portal-kde. I did this so you can see that the callstack was when it had high CPU usage. I believe there is another bug for the high CPU usage so i've already stopped reporting these crashes.

On the other hand, the high CPU usage from xdg-desktop-portal-kde still does appear after each login with Plasma 5.22. I believe this issue with high CPU started way back in 5.21.4.
I'm feeling sorry for all the users on Kubuntu 21.04 who still seem to be with 5.21.4 with no backport for them in the official Kubuntu archives.
I'm using the kubuntu beta/backport ppa exactly because i was told 5.22 fixes these.
Comment 4 Lyubomir 2021-06-25 15:59:17 UTC 
... Just discovered i'm also feeling sorry for myself, i'm on 5.22 and still have the high CPU usage bug.

Feel free to close this bug.
Comment 5 Jan Grulich 2021-06-25 16:03:16 UTC 
Can you kill xdg-desktop-portal-kde after you log in and then start it with QT_LOGGING_RULES='xdp*.debug=true' to see if there is any call/query which might be causing the CPU usage?
Comment 6 Lyubomir 2021-06-25 17:52:33 UTC 
I believe this bug should be made a duplicate of this one:https://bugs.kde.org/show_bug.cgi?id=433293
Comment 7 Lyubomir 2021-12-23 12:35:28 UTC 
Since then i've switched to Arch and for some time i don't think i see this any more. Kubuntu ships updates at a slower pace.
Marking as duplicate.

*** This bug has been marked as a duplicate of bug 433293 ***