I ran an own python script which created a window of 500 by 500 pixels which was expanded to fullscreen and broke the whole desktop. No multimonitor glitchy graphics. I even loaded a backup from a few days ago but the desktop is still broken. I don't know why exactly it's broken and I don't know how to fix it. I don't want to reinstall the whole system because there is too much customization which would be lost and also a hell of a lot software I would loose. I don't want to spend hours of reinstalling and reconfiguring the whole system and software.

Error information:

Code: Select all

Application: Plasma (plasmashell), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f45210652ad in QQuickItemPrivate::addToDirtyList() () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f4521069d8e in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f452107230b in QQuickItemPrivate::removeChild(QQuickItem*) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f452107423c in QQuickItem::setParentItem(QQuickItem*) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f452107480a in QQuickItem::~QQuickItem() () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f45211f5d39 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f451f65a4e3 in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f45203196b3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f451f62d16a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f451f630257 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f451f686ef7 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f451da608bb in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f451dab3f08 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f451da5e003 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f451f686548 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f451f62ba9b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f451f634024 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x0000556dc8328d09 in  ()
#22 0x00007f451ef5efd0 in __libc_start_call_main (main=main@entry=0x556dc8327eb0, argc=argc@entry=1, argv=argv@entry=0x7ffe55a798e8) at ../sysdeps/nptl/libc_start_call_main.h:58
#23 0x00007f451ef5f07d in __libc_start_main_impl (main=0x556dc8327eb0, argc=1, argv=0x7ffe55a798e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe55a798d8) at ../csu/libc-start.c:409
#24 0x0000556dc8328e25 in  ()
[Inferior 1 (process 2015) detached]

Also there is something about an executable error with "plasmashell PID: 2015 Signal: Segmentation fault (11)".

The desktop itself is somehow running but many panels are missing and my secondary monitor is glitchy, wide and kind of a mirroring of the built in one of my laptop. Plasma doesn't even recognise the second monitor. SDDM is okay but plasma is just broken. I did even restore a backup from the boot recovery menu and it didn't change anything. I really need help with this.

Is another script running? What exactly did you put in that script? might be useful to tell what you invoked. Also specifics about your exact Plasma version and distribution version are always helpful.
Why do you think you have to reinstall? Did you test with a new user?