Comment # 2 on bug 1083879 from Michal Srb

This line:

> plasmashell[2638]: QXcbConnection: XCB error: 2 (BadValue), sequence: 10186, resource id: 60817409, major code: 142 (Unknown), minor code: 3

means that there was some miscommunication between X server and plasmashell. It
happened in some extension, we could only guess which one. There is nothing
obvious in the dmesg.

Please write a full description of your problem. What did you do, what went
wrong, is it reproducible repeatedly?

Also attach the /var/log/Xorg.0.log.