Re: [F25] only black screen with KDE Plasma session

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Frédéric Bron wrote:

>> If none of the crash handlers catch this (like abrt or drkonqi), you can
>> try
>> running plasmashell under gdb to get a backtrace.  One way, use krunner
>> (ALT-F2) to launch konsole, then run:
>>
>> gdb /usr/bin/plasmashell
> 
> Good idea. The log is attached.
> Can you see something?

I think this thread, something to do with cups:

Thread 1 (Thread 0x7fffe42fb040 (LWP 10727)):
#0  0x00007fff28ce3d86 in JobModel::updateJob(int, KCupsJob const&) () at 
/lib64/libkcupslib.so
#1  0x00007fff28ce6137 in JobModel::getJobFinished() () at 
/lib64/libkcupslib.so
#2  0x00007fff28cec335 in JobModel::qt_static_metacall(QObject*, 
QMetaObject::Call, int, void**) [clone .part.7] () at /lib64/libkcupslib.so
#3  0x00007ffff1d727e9 in QObject::event(QEvent*) () at 
/lib64/libQt5Core.so.5
#4  0x00007ffff2616ecc in QApplicationPrivate::notify_helper(QObject*, 
QEvent*) () at /lib64/libQt5Widgets.so.5
...

will need more -debuginfo to know more, at least:
dnf debuginfo-install kde-print-manager
(and try generating a backtrace again)


Now that we have a better idea what is crashing, one workaround to consider 
to get a working plasmashell...  temporarily remove print applet support by 
doing:
dnf remove kde-print-manager

-- Rex


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