This bug report AFAIK can be closed and I forgot to do so. Explanations: As I said, my GPU is an Intel i915. This kind of low-end GPUs cannot render screens wider than 2048 pixels. When I activated xrandr, the virtual screen was 2800 pixels large. Since the GPU could not handle it, the CPU should have taken over from it in a not so graceful way, producing this kind of random behaviour.
Well, I guess there is still work to properly handle this kind of GPU/CPU switch (or just disable compositing...) but that should not fall into the scope of this bug report. I'm really sorry for the inconvenience and the waste of time. Regards. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/876422 Title: xfce4/gnome-terminal and cairo-dock always drawn on top To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/876422/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
