Arch Linux

p90

Member

Registered: 2013-06-07

Posts: 21

adjust radeon power profile settings

Hello,

I am running arch linux on my laptop with a ati graphic card (x700 which is a R4xx).
I am using the power profile method to control my graphic card (dpm is not available for the R4xx and I havent tried dynpm yet).
The problem is, in the high power profile, the laptop overheats after about 5mins. Mid works fine.
So I had a look at the clock speeds:
[root]# echo high > /sys/class/drm/card0/device/power_profile
[root]# cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 350000 kHz
current engine clock: 351000 kHz
default memory clock: 300000 kHz
current memory clock: 297000 kHz
PCIE lanes: 0
[root]# echo mid > /sys/class/drm/card0/device/power_profile
[root]# cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 350000 kHz
current engine clock: 209250 kHz
default memory clock: 300000 kHz
current memory clock: 297000 kHz
PCIE lanes: 1

So my guess is, I need to either adjust "default engine clock" to a value between 209250(mid is fine) and 350000(value of high, hence to big) or
set a new  "current engine clock" for the high profile.

So my question is: where do I find these values? How can I adjust them? I already had a look at the radeon pages here: http://xorg.freedesktop.org/wiki/RadeonFeature/ but they only describe how the profiles work, not how they are changed.

Thanks in advance!

p90