Bug#402545: compiz: Returning from another virtual terminal makes a black screen

[Philippe Perrin <philiperrin@free.fr>]

I retrieved the Xorg.log file for my compiz-enabled terminal. It adds 
the following lines, at the moment I try to go back and it makes the 
black screen:

(WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
(II) No APM support in BIOS or kernel
(II) NVIDIA(0): Setting mode "1280x1024_74.00"
(II) Implicit Core Pointer: ps2EnableDataReporting: succeeded

Does it help?
Thanks.