I have the same problem (Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller, Kubuntu Intrepid, KDE 4.1.3) and the workaround "CTRL+ALT+F1" + "CTRL+ALT+F7" fix this
I have the same problem (Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller, Kubuntu Intrepid, KDE 4.1.3) and the workaround "CTRL+ALT+F1" + "CTRL+ALT+F7" fix this