[Bug 89294] New: 1002:95c0 DPM not enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89294

            Bug ID: 89294
           Summary: 1002:95c0 DPM not enabled
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: littel.jo at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 113783
  --> https://bugs.freedesktop.org/attachment.cgi?id=113783&action=edit
description of my system

DPM is not enabled:
the command "dmesg | grep dpm" has no input
sudo cat /sys/kernel/debug/dri/64/radeon_pm_info
default engine clock: 750000 kHz
current engine clock: 749250 kHz
default memory clock: 500000 kHz
current memory clock: 495000 kHz
voltage: 1200 mV
PCIE lanes: 16

while my driver supports this :
http://xorg.freedesktop.org/wiki/RadeonFeature/

if I force dpm in grub. Sometimes, my computer boots (and dpm works) but
sometimes, it does not boot, there is a black screen. The only solution is to
switch off.

further information:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1360393

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