Comment 7 for bug 8711

There is now a preliminary fix to this issue, but it needs work and integration.
This involves using a utility to power down the video card on suspend and power
up on resume.
You will need to install pciutils-dev, and then download the file at
http://www.srcf.ucam.org/~mjg59/radeon/radeontool-1.5-mjg.tar.gz
Compile the code in this tarball, and put the resulting executable "radeontool"
in a place in the path, like /usr/local/bin
Add, to the end of /etc/acpi/prepare.sh:
radeontool power off
Add, to the beginning of /etc/acpi/resume.sh (but after the line beginning in #)
radeontool power on

This will take care of the problem, but needs integration work (so that it is
only used when the problem exists).