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Power Management on Mobility Radeon X600
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phoenixhou
n00b
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Joined: 07 Jan 2010
Posts: 26

PostPosted: Mon May 24, 2010 6:33 am    Post subject: Power Management on Mobility Radeon X600 Reply with quote

Hi all,
I am wondering whether I could use power management features of my Mobility Radeon X600 (M24) with open source driver.

Here is my configurations:
2.6.32-gentoo-r7 with KMS, xorg-server 1.7.6, xf86-video-ati 6.13.0

From some guides I learnt to set
Code:
"DynamicClocks" "on"
to turn on power management. But in radeon(4) it says
Code:
"DynamicPM" "on"
. Therefore I set both in my xorg.conf

However,
Code:

$ cat /var/log/Xorg.0.log | grep "Dynamic"
(WW) RADEON(0): Option "DynamicClocks" is not used
(WW) RADEON(0): Option "DynamicPM" is not used

Here is my full Xorg.0.log:http://pastebin.com/xHZx7Thd

It seems PM was not functional. I am wondering if it is my misconfiguration or simply my card/driver unable to do PM.
_________________
BenQ R53EG: Intel Celeron-M 1.60GHz, 2G DDR533, Hitachi HTS541616J9AT00 160G, ATI Mobility Radeon X600

Desktop: AMD Phenom II X4 940, 4G DDR1333, WD 2T*2 RAID0, ATI HD5770*2 CF
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chithanh
Developer
Developer


Joined: 05 Aug 2006
Posts: 1561
Location: Berlin, Germany

PostPosted: Tue May 25, 2010 12:45 am    Post subject: Reply with quote

The DynamicClocks option is totally obsolete. Valid options are described in the radeon manpage.

Also note that you are using KMS. These xorg.conf options only have an effect in UMS. For power management with KMS you need a very recent kernel and control it via /sys/class/drm/card0/device/power_method
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