[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Eike Hein via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

--- Comment #10 from Eike Hein  ---
No problem and sorry for the trouble!

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[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Robby Pedrica via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

Robby Pedrica  changed:

   What|Removed |Added

 Resolution|FIXED   |LATER
 Status|NEEDSINFO   |RESOLVED

--- Comment #9 from Robby Pedrica  ---
Eike thank you very much for taking the time to look into this and to provide a
result. Appreciate your efforts. The window list is not a critical requirement
for me so I'll just remove it for the moment and revisit it in future Plasma
versions.

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[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Eike Hein via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

Eike Hein  changed:

   What|Removed |Added

 Resolution|WAITINGFORINFO  |FIXED

--- Comment #8 from Eike Hein  ---
This is caused by a Qt bug in code used by the old Task Manager backend, which
is still used in the Window List plasmoid in Plasma 5.7. The Window List
plasmoid in 5.8 has been ported to the new Task Manager backend. You can
temporarily avoid this problem by disabling the Window List plasmoid. We're
considering backporting the more reliable Window List to a future 5.7.x
release.

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[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Robby Pedrica via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

--- Comment #7 from Robby Pedrica  ---
Yes I do - it's docked in the system tray ...

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[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Eike Hein via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

Eike Hein  changed:

   What|Removed |Added

 Resolution|BACKTRACE   |WAITINGFORINFO

--- Comment #6 from Eike Hein  ---
Do you use the Window List plasmoid somewhere?

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[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Robby Pedrica via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

Robby Pedrica  changed:

   What|Removed |Added

 Resolution|FIXED   |BACKTRACE

--- Comment #5 from Robby Pedrica  ---
Ok so I decided to start with a new kde profile but before doing that, I
removed 2 folders in ~/.kde:

cache-
tmp-

There seems to be a big improvement:

1. plasmashell CPU process no longer takes a large amount of CPU ( at least
continuously )
2. I can no longer cause the issue when starting "About System"

The original problem still occurs though ( ie. plasmashell randomly crashing
and restarting ) and on 1 occasion I've received a crash report - as follows:

Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f65ecc8e7c0 (LWP 30106))]

Thread 27 (Thread 0x7f64af75f700 (LWP 30347)):
#0  0x7f65e3b3936f in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x7f65e540dc4b in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib64/libQt5Core.so.5
#2  0x7f652a0d7947 in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x7f652a0db658 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#5  0x7f652a0db6a2 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#7  0x7f652a0d942f in ThreadWeaver::Thread::run() () at
/usr/lib64/libKF5ThreadWeaver.so.5
#8  0x7f65e540ceb9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x7f65e3b33684 in start_thread () at /lib64/libpthread.so.0
#10 0x7f65e47f2efd in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7f64b4f5a700 (LWP 30346)):
#0  0x7f65e3b3936f in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x7f65e540dc4b in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib64/libQt5Core.so.5
#2  0x7f652a0d7947 in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x7f652a0db658 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#5  0x7f652a0db6a2 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#7  0x7f652a0d942f in ThreadWeaver::Thread::run() () at
/usr/lib64/libKF5ThreadWeaver.so.5
#8  0x7f65e540ceb9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x7f65e3b33684 in start_thread () at /lib64/libpthread.so.0
#10 0x7f65e47f2efd in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7f64b575b700 (LWP 30345)):
#0  0x7f65e3b3936f in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x7f65e540dc4b in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib64/libQt5Core.so.5
#2  0x7f652a0d7947 in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x7f652a0db658 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#5  0x7f652a0db6a2 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#7  0x7f652a0db6a2 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#9  0x7f652a0db6a2 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#11 0x7f652a0db6a2 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#13 0x7f652a0db6a2 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#15 0x7f652a0db6a2 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#16 0x7f652a0d6ba9 in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at
/usr/lib64/libKF5ThreadWeaver.so.5
#17 0x7f652a0db6a2 in  () at 

[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Robby Pedrica via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

--- Comment #2 from Robby Pedrica  ---
Hi Eike

Is there any way for me to provide a backtrace or crash info? As mentioned,
there is nothing in dmesg ...

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[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Eike Hein via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

--- Comment #3 from Eike Hein  ---
Check for the crash handler icon in the system tray area.

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[plasmashell] [Bug 366246] Plasmashell restarts randomly, taskbar disappears and reappears after +/- 10 seconds

[Eike Hein via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=366246

Eike Hein  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEEDSINFO
 Resolution|--- |FIXED

--- Comment #1 from Eike Hein  ---
Not useful without a crash backtrace. "About System" is third-party code.

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