Public bug reported:
To keep temperature low and the fan off I use the power_profile mid
instead of high. This has worked flawlessly for a long time. Since last
week however the power_profile falls back to high when I use Suspend to
Ram or when I change the resolution to adjust for an external screen
using arandr.
before:
sudo cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 680000 kHz
current engine clock: 297000 kHz
default memory clock: 800000 kHz
current memory clock: 405000 kHz
voltage: 900 mV
PCIE lanes: 16
after:
sudo cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 680000 kHz
current engine clock: 675000 kHz
default memory clock: 800000 kHz
current memory clock: 792000 kHz
voltage: 1200 mV
PCIE lanes: 16
Everytime this happens I now have to manually change power_profile via
echo mid | sudo tee /sys/class/drm/card0/device/power_profile mid
For permant change I put these 2 lines in /etc/rc.local:
echo profile > /sys/class/drm/card0/device/power_method
echo mid > /sys/class/drm/card0/device/power_profile
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xserver-xorg-video-radeon 1:7.2.0-0ubuntu10
ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Sun Apr 20 11:44:10 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-11-26 (144 days ago)
InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
MarkForUpload: True
SourcePackage: xserver-xorg-video-ati
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: xserver-xorg-video-ati (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug saucy
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https://bugs.launchpad.net/bugs/1310225
Title:
Radeon driver disregards power_profile configuration using STR or
changing screen resolution
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