From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 52345] New: KMS Power Management have no effect
Date: Sat, 21 Jul 2012 16:30:56 +0000
Message-ID: <bug-52345-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=52345

             Bug #: 52345
           Summary: KMS Power Management have no effect
    Classification: Unclassified
           Product: DRI
           Version: XOrg CVS
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: d2xdt2@gmail.com


Using 

OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD SUMO2
OpenGL version string: 2.1 Mesa 8.0.3
OpenGL shading language version string: 1.20

AMD A4-3400 APU with Radeon(tm) HD Graphics
Fedora 17 64bit
Linux amd 3.4.5-2.fc17.x86_64 #1 SMP Mon Jul 16 20:52:08 UTC 2012 x86_64 x86_64
x86_64 GNU/Linux


According to
http://wiki.x.org/wiki/RadeonFeature

should

echo profile > /sys/class/drm/card0/device/power_method
echo high >  /sys/class/drm/card0/device/power_profile

put the GPU in high performance mode and

echo profile > /sys/class/drm/card0/device/power_method
echo low >  /sys/class/drm/card0/device/power_profile

in low performance mode.

glxgears gives 60 FPS in both cases, which leads me to beleive that power
management does work.

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