Ubuntu
linux package

  1. Bug #325805
  2. Comment #3

Comment 3 for bug 325805

Revision history for this message
madbiologist (me-again) wrote :

If this is still occurring on Ubuntu 12.04 "Precise Pangolin" or later, AND you have an AMD/ATI graphics chip, keep reading.

Basic AMD/ATI power management is available in the 2.6.35 kernel (used in Ubuntu 10.10 "Maverick Meerkat") and later. There is a dynamic method or a profile-based method. You can switch between the dynamic and profile-based methods by typing "echo dynpm /sys/class/drm/card0/device/power_method” or “echo profile /sys/class/drm/card0/device/power_method", and switch profile by typing "echo <option> /sys/class/drm/card0/device/power_profile". Replace <option> with auto, low, high, or default. (Depending on your configuration, “card0” might be different)

You will not be able to use the better power management which was recently introduced in the upstream 3.11 linux kernel as it is only for AMD/ATI Radeon R600 and newer hardware. The fact that you reported this bug with the 2.6.27-11-generic x86_64 kernel tells me that if you do have an AMD/ATI graphics chip it is an R500 or earlier, as support for the R600 and R700 was introduced in the 2.6.30 kernel.