plasmashell hangs at least every hour for an unknown reason. Kwin is still running and working as expected, I can move windows, switch through them with Alt+Tab and run commands from krunner (Alt+F2). I can't click anything on the panel, it simply doesn't react. Sometimes as plasmashell hangs it shows a broken preview in the taskbar, but I don't have a screenshot of this.

To workaround this I can kill plasmashell and restart it and it continues to work for a time.

If I run plasmashell in a konsole window, the output doesn't show anything directly related with the hang. But I get errors like:

QXcbConnection: XCB error: 2 (BadValue), sequence: 8291, resource id: 140509189, major code: 142 (Unknown), minor code: 3
QXcbConnection: XCB error: 2 (BadValue), sequence: 8370, resource id: 125829124, major code: 142 (Unknown), minor code: 3
QXcbConnection: XCB error: 2 (BadValue), sequence: 8439, resource id: 18874372, major code: 142 (Unknown), minor code: 3

If I move the mouse pointer over a tab in the taskbar.

I made a core dump with gcore, but I'm not sure if I should upload it. (compressed 13,2MB, uncompressed 3,2GB).


Reproducible: Sometimes




OS: openSUSE Tumbleweed (20160209) (x86_64)
Kernel: 4.4.0
plasmashell 5.5.3
X.Org X Server 1.18.0
OpenGL renderer string: Gallium 0.4 on AMD KAVERI (DRM 2.43.0, LLVM 3.7.0)
OpenGL core profile version string: 4.1 (Core Profile) Mesa 11.1.1
OpenGL core profile shading language version string: 4.10