Comment 5 for bug 1175513

First I added radeon.ko and fglrx.ko to the blacklist.

Second I ran the

modprobe vfio-pci
echo "0000:02:00.0" > /sys/bus/pci/devices/0000\:02\:00.0/driver/unbind
echo "0000:02:00.1" > /sys/bus/pci/devices/0000\:02\:00.1/driver/unbind
echo "1002 6739" > /sys/bus/pci/drivers/vfio-pci/new_id
echo "1002 aa88" > /sys/bus/pci/drivers/vfio-pci/new_id

And third I ran qemu with the -device vfio-pci,host=02:00.0,x-vga=on options

4-th I installed the Catalyst drivers in windows 7 and change display to HDMI output. But during a reboot the Catalyst driver switches the graphics card to powersave mode.