Good morning everyone. I have recently installed Ubuntu 14.04 LTS (Fresh release) and I wanted to give a serious try to the radeon drivers (AMD 280X). One thing I noticed for the OSS drivers compared to the Catalyst ones is that the fan speed is high at all times. According to most documentation online, I should be able to change settings related to it by
# echo battery > /sys/class/drm/card0/device/power_dpm_state # echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level
But both return to me
No such file or directory
If I do a dmseg|grep radeon I can see the dpm is active
[ 12.624293] [drm] radeon: dpm initialized
What am I doing wrong? Can anyone help? Thank you!