With some KDE specific settings, kwin crashes.

So I was playing around with some settings regarding virtual desktops. I wanted to have the on-screen switch setting on, however, using this causes kwin to randomly and inconsistenly crash after switching desktops frequently and fast.

I can of course remedy this by restarting kwin in the terminal, but this is only temporary as it will crash again.

Trying out different compositors has no effect.

specs; (NEOFETCH)


OS: Ubuntu 18.04 LTS x86_64 
Host: 80SR Lenovo ideapad 510-15ISK 
Kernel: 4.15.0-20-generic 
Uptime: 17 mins 
Packages: 2465 
Shell: bash 4.4.19 
Resolution: 1920x1080 
WM: KWin 
Theme: Breeze [KDE], Breeze [GTK3] 
Icons: Breeze [KDE], Breeze [GTK3] 
Terminal: konsole 
CPU: Intel i7-6500U (4) @ 3.100GHz 
GPU: NVIDIA GeForce 940MX 
GPU: Intel Integrated Graphics 
Memory: 857MiB / 7882MiB 

I'm using KDE plasma 5.12 on Kubuntu 18.04 LTS, with the nvidia-390 drivers.

Anybody have any idea why this is happening? Here is some pictures on the problem;


the setting

Kwin crash

kwin crash

Crash report

crash report


I experience a similar problem and found a preliminary fix for it, as decribed in the bug report: https://bugs.kde.org/show_bug.cgi?id=396000

I hope this helps you, too. Maybe you want to confirm this on my bugreport to give it more momentum?


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