Comment 133 for bug 259385

I finally figured out how to get compiz working on a computer with an intel 845 chip that is running intrepid.

Make the device section of your /etc/X11/xorg.conf file read as follows:
Section "Device"
 Identifier "Configured Video Device"
 Driver "intel"
 Option "AccelMethod" "XAA"
EndSection

You will also have to remark out the line in the file /usr/bin/compiz that reads:
T="$T 8086:3577 8086:2562" # Intel 830MG, 845G (LP: #259385)