Arch Linux

lagagnon

Member

From: an Island in the Pacific...

Registered: 2009-12-10

Posts: 1,087

Website

ATI video: unable to access KMS dynamic frequency switching

Hardware: HP Pavilion ze 5600 laptop, ATI Radeon IGP330M, radeon driver, latest kernel. According to the wiki, ATI entry ( https://wiki.archlinux.org/index.php/Ati ) I have KMS enabled (checked Xorg.0.log for this) however, I do not have the /sys/class/drm/card0/device/power_method file in my /sys directory, hence I am unable to use the method there described for KMS enabled Power Savings on my ATI Radeon chip.

I have tried the method described for non-KMS but that crashed X .

How do I enable power saving on this chip?
PS: my Xorg log can be seen here:  http://paste.pocoo.org/show/428472/

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tcx

Member

From: Porto, Portugal

Registered: 2005-07-31

Posts: 3

Re: ATI video: unable to access KMS dynamic frequency switching

Hello everyone.

Same issue here.
I'm running Arch 64bit 3.0-ARCH on an Asus F5VL.
My Radeon is a x2300 working in KMS.
couple of lines from dmesg:

[    5.021221] [drm] radeon kernel modesetting enabled.
[    5.021816] [drm] initializing kernel modesetting (RV515 0x1002:0x718A 0x1043:0x1449).

couple of lines from /var/log/Xorg.0.log:

[    11.087] (II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
[    11.087] (II) [KMS] Kernel modesetting enabled.

and as described from lagagnon:

$ cat /sys/class/drm/card0/device/power_method
cat: /sys/class/drm/card0/device/power_method: No such file or directory

I already read through the Arch wiki page some times and also read http://www.x.org/wiki/RadeonFeature
Any thoughts on getting power management to work in KMS?