Comment # 3 on bug 1161049 from Stefan Dirsch

> Looks like you're not the first stumbling across this ...
> 
> https://stackoverflow.com/questions/59323267/x-error-of-failed-request-badmatch-on-x-shmputimage-major-opcode-130-minor
> https://gitlab.freedesktop.org/xorg/xserver/issues/952

Ok. Closing as upstream.