Bug 49029 - [DRM,KMS,R300,laptop]Power management not working
Summary: [DRM,KMS,R300,laptop]Power management not working
Status: RESOLVED MOVED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
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Depends on:
Blocks:
 
Reported: 2012-04-20 20:54 UTC by malicorne
Modified: 2019-11-19 08:26 UTC (History)
0 users

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i915 platform:
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Attachments
drm output from kernel.log (2.28 KB, text/plain)
2012-04-20 20:54 UTC, malicorne
no flags Details

Description malicorne 2012-04-20 20:54:34 UTC
Created attachment 60410 [details]
drm output from kernel.log

Hi,
Archlinux running on a compal CL56 (radeon mobility 9700).
kernel is 3.2.11 and I can't find any file for power management :
- /sys/class/drm/card0/device/power_method doesn't exist and can't be created
- /sys/class/drm/card0/device/power_profile doesn't exist and can't be created

Please find attached drm output from kernel.log.
Apart from that it's working fine but the lack of power management reduce the run from a battery from 4h to 1h30.
Comment 1 Michel Dänzer 2012-04-23 02:29:32 UTC
> Apart from that it's working fine but the lack of power management reduce the
> run from a battery from 4h to 1h30.

I doubt it's all due to just that, but FWIW one thing you can try is radeon.dynclks=1 to enable clock gating.
Comment 2 Martin Peres 2019-11-19 08:26:20 UTC
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