Bug 89294

Summary: 1002:95c0 DPM not enabled
Product: xorg Reporter: Joseph Ligier <littel.jo>
Component: Driver/RadeonAssignee: xf86-video-ati maintainers <xorg-driver-ati>
Status: RESOLVED DUPLICATE QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: 7.7 (2012.06)   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
i915 platform: i915 features:
Description Flags
description of my system none

Description Joseph Ligier 2015-02-24 07:55:36 UTC
Created attachment 113783 [details]
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 :

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
Comment 1 Alex Deucher 2015-02-24 14:42:00 UTC
DPM is not enabled by default on rv6xx as it's unstable on some chips.

*** This bug has been marked as a duplicate of bug 66963 ***

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