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Message #121820
[Bug 771963] Re: graphics card uses more power than needed when on batery
apport information
** Tags added: apport-collected natty ubuntu
** Description changed:
Binary package hint: xserver-xorg-video-radeon
By using powertop and reading the radeon/feature page on x.org I managed to reduce the power consumption when on batery by about 4W on my laptop (from about 22W to 18W). I just followed the recommendations on:
http://www.x.org/wiki/RadeonFeature
and did:
$ sudo -c sh 'echo "auto" > /sys/class/drm/card0/device/power_profile'
- This solution, if it doesn't trigger problems for anyone, should be made
- either the default or easily configurable through some file in /etc.
+ This solution, if it doesn't trigger problems for anyone, should be made either the default or easily configurable through some file in /etc.
+ ---
+ Architecture: i386
+ DistUpgraded: Fresh install
+ DistroCodename: natty
+ DistroRelease: Ubuntu 11.04
+ DistroVariant: ubuntu
+ InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
+ Package: xserver-xorg-video-ati 1:6.14.0-0ubuntu4 [modified: usr/lib/xorg/modules/drivers/ati_drv.so]
+ PackageArchitecture: i386
+ ProcEnviron:
+ LANGUAGE=
+ PATH=(custom, no user)
+ LANG=en_GB.UTF-8
+ SHELL=/bin/bash
+ ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
+ Tags: natty ubuntu
+ Uname: Linux 2.6.38-8-generic i686
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups:
+
+ version.compiz: compiz N/A
+ version.libdrm2: libdrm2 2.4.23-1ubuntu6
+ version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
+ version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
+ version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
+ version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
+ version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
+ version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
+ version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7
** Attachment added: "Dependencies.txt"
https://bugs.launchpad.net/bugs/771963/+attachment/2091934/+files/Dependencies.txt
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https://bugs.launchpad.net/bugs/771963
Title:
graphics card uses more power than needed when on batery
References