Hi everyone!

I just got kde neon upgraded yesterday, and everything was ok until the reboot. When I reboot to kde, and start typing, kwin keeps crashing and restarting several times. The problem does not appear when I don't press any keys from keyboard.

I tried logging out by pressing key Ctrl + Alt + F2, and update the system as in some posts, but it did not help.
I tried reporting and backtracing too, but it said that some debug symbol helpers wasn't installed, but I also couldn't install them.

This is the error, hope this help:

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Executable: kwin_x11 PID: 1344 Signal: Segmentation fault (11) 

Here is output of

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kwin --replace

:

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Icon theme "gnome" not found.
Icon theme "ubuntu-mono-dark" not found.
Icon theme "Mint-X" not found.
Icon theme "elementary" not found.
Icon theme "gnome" not found.
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 180, resource id: 111149064, major code: 20 (GetProperty), minor code: 0
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 181, resource id: 111149064, major code: 20 (GetProperty), minor code: 0
Module 'org.kde.kwin.decoration' does not contain a module identifier directive - it cannot be protected from external registrations.
file:///usr/share/kwin/aurorae/MenuButton.qml:11: TypeError: Cannot read property 'closeOnDoubleClickOnMenu' of null
QPainter::begin: Paint device returned engine == 0, type: 3
file:///usr/share/kwin/aurorae/MenuButton.qml:11: TypeError: Cannot read property 'closeOnDoubleClickOnMenu' of null
file:///usr/share/kwin/aurorae/MenuButton.qml:11: TypeError: Cannot read property 'closeOnDoubleClickOnMenu' of null
QPainter::begin: Paint device returned engine == 0, type: 3
file:///usr/share/kwin/aurorae/MenuButton.qml:11: TypeError: Cannot read property 'closeOnDoubleClickOnMenu' of null
file:///usr/share/kwin/aurorae/MenuButton.qml:11: TypeError: Cannot read property 'closeOnDoubleClickOnMenu' of null
file:///usr/share/kwin/aurorae/MenuButton.qml:11: TypeError: Cannot read property 'closeOnDoubleClickOnMenu' of null
QPainter::begin: Paint device returned engine == 0, type: 3
qml: FORCE-BLUR: starting the script
qml: ["yakuake","urxvt","keepassxc"]

And when I typed a key, the output showed this:

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Application::crashHandler() called with signal 11; recent crashes: 1
 KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = kwin_x11 path = /usr/bin pid = 4059
KCrash: Arguments: /usr/bin/kwin_x11 --replace
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi
Icon theme "gnome" not found.
Icon theme "ubuntu-mono-dark" not found.
Icon theme "Mint-X" not found.
Icon theme "elementary" not found.
Icon theme "gnome" not found. 

What can I do to solve this? Thank you for your help.