[frameworks-kquickcharts] [Bug 436819] kquickcharts 100% cpu usage from plasmashell after starting plasma

2021-06-13 Thread Kristóf Tóth
https://bugs.kde.org/show_bug.cgi?id=436819

--- Comment #2 from Kristóf Tóth  ---
The issue no longer occours after upgrading to plasma-workspace 5.22.0.

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[frameworks-kquickcharts] [Bug 436819] kquickcharts 100% cpu usage from plasmashell after starting plasma

2021-05-11 Thread Kristóf Tóth
https://bugs.kde.org/show_bug.cgi?id=436819

--- Comment #1 from Kristóf Tóth  ---
I have 3 similar machines:
  - they all run Arch Linux + KDE
  - software versions should be the same, I update them several times a week
  - mostly the same KDE related settings

Weird thing is that this issue seems to affect only one of them:
A Dell Latitude laptop with the mentioned i7-8665U CPU/GPU, no dedicated
graphics. I have to keep kquickcharts downgraded to 5.81.0-1 on this machine to
avoid the issue.

The rest are not affected:
  - desktop PC with a dedicated nvidia gpu (proprietary driver, has no iGPU)
  - older Macbook air (i7-4650U CPU/GPU, no dedicated graphics)
These work fine with kquickcharts 5.82.0-1, I'm writing this comment from the
desktop PC.

Any tips on how I could gather more information (if required)? I can reproduce
the problem relatively easily (I just update kquickcharts and restart plasma on
the affected laptop, then roll it back to the older version to fix it).

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[frameworks-kquickcharts] [Bug 436819] New: kquickcharts 100% cpu usage from plasmashell after starting plasma

2021-05-09 Thread Kristóf Tóth
https://bugs.kde.org/show_bug.cgi?id=436819

Bug ID: 436819
   Summary: kquickcharts 100% cpu usage from plasmashell after
starting plasma
   Product: frameworks-kquickcharts
   Version: 5.82.0
  Platform: Archlinux Packages
OS: Linux
Status: REPORTED
  Severity: normal
  Priority: NOR
 Component: general
  Assignee: ahiems...@heimr.nl
  Reporter: mrt...@strongds.hu
CC: kdelibs-b...@kde.org
  Target Milestone: ---

SUMMARY
kquickcharts uses 100% cpu from plasmashell, making it unresponsive

STEPS TO REPRODUCE
1. Start KDE from xinit via startplasma-x11

OBSERVED RESULT
This happened after my daily upgrade routine, where kquickcharts was upgraded
to 5.82.0 (along with most KDE packages).

Task manager is unresponsive: can't open application launcher, the clock is
stuck, started applications have no entries. The wifi connected notification is
also stuck and it cannot be closed. The task manager cannot be interacted with
at all (left/right clicks have no effect on it).

Running htop shows that plasmashell uses 100% of a single CPU core. Running
perf top shows that the CPU is busy with something from libQuickCharts.so. At
first I thoght that this is related to the system monitor sensor widget I use,
but after removing it from the task manager the issue is still present.

Downgrading kquickcharts to version 5.81.0-1 fixes the issue, hence my guess
that this is a kquickcharts problem.

EXPECTED RESULT
plasmashell should work fine.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux latest (as of 2021-05-09)
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.82.0
Qt Version: 5.12.2 (+kde+r192-1)

ADDITIONAL INFORMATION
This is an x11 plasma session running on an i7-8665U iGPU.

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[frameworks-kquickcharts] [Bug 436819] kquickcharts 100% cpu usage from plasmashell after starting plasma

2021-05-09 Thread Kristóf Tóth
https://bugs.kde.org/show_bug.cgi?id=436819

Kristóf Tóth  changed:

   What|Removed |Added

 CC||mrt...@strongds.hu

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