Comment 32 for bug 492782

I am experiencing this problem for the first time, and have recently upgraded to Ubuntu 11.04 64-bit - possible regression?
When I connect an external monitor to my Lenovo ThinkPad X200, Intel 4500MHD graphics, the mouse is invisible on the second display (extended desktop mode).
Also, I get some weird black flickering on the second display when Compiz dialogs are shown. E.g. pressing Alt+Tab I get some brief flickering just as the dialog appears and disappears. If I hold Ctrl+Shift and press an arrow key to switch workspace, keeping Ctrl+Shift pressed to leave the dialog open (on the first display), there will be constant flickering on the second display. Activating the Benchmark plugin also causes constant flicker.

linux-image-2.6.38-8-generic 2.6.38-8.42
xserver-xorg-video-intel 2.14.0-4ubuntu7.1
compiz 0.9.4+bzr20110415-0ubuntu2