I have Acer Emachines e510 laptop.
OS: Mandriva PowerPack 2008. Kernel 2.6.22
Video card: Intel Mobile GM965/GL960 Integrated Graphics Controller (rev 03)

[sergy@localhost ~]$ compiz
compiz (core) - Error: Screen 0 on display ":0.0" already has a window manager; try using the --replace option to replace the current window manager.
compiz (core) - Fatal: No manageable screens found on display :0.0

[sergy@localhost ~]$ glxinfo | grep -i direct
direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)


When launching 'compiz --replace' machine hangs with no window manager (without window decoration).

If you know how to launch compiz PLS write it in your answer.

Until you get the message "direct rendering: Yes" by issuing the command "glxinfo | grep -i direct", you won't be able to start compiz.

Mine with same card:

$ glxinfo | grep -i direct
direct rendering: Yes


- Google for i965 & direct rendering. You'll need something like this in your /etc/X11/xorg.conf :


Section "Module"
....
Load "dri"
Load "glx"
....
EndSection


Section "ServerLayout"
...
Option "AIGLX" "true"
.....
EndSection

Section "DRI"
Mode 0666
EndSection

Section "Extensions"
Option "Composite" "Enable"
Option "RENDER" "Enable"
EndSection