Comment 86 for bug 563156

Michael,
I upgraded to 10.10 (after a fresh install of 10.04) on my Thinkpad T60 with ATI Mobility Radeon X1300. Kernel: 2.6.35-22-generic-pae

My attempt at:
echo profile > /sys/class/drm/card0/device/power_method

results in No Such File or Directory. (run as root)

Apparently that folder does not allow files to be created in it even as root. I did notice that there seems to be a folder named 'power' in there and some files in it. Perhaps we're not meant to directly touch these but configure it from somewhere else? Might be bleeding edge work-in-progress.. Any ideas or links for updates?