Comment 0 for bug 269509

Binary package hint: xserver-xorg-video-intel

Compiz recently started by default again, thanks to some fixes in gnome-session. Now the old problem of "second X session just has white screen" is back. Parrotting Michael, this is due to the X server pretending that it has two DRI capable screens, but it is a known problem that there can only be one compiz X.org at a time.

I'll attach glxinfo output from my primary session (with compiz running fine) and the output from the guest session (where I just get a white screen).