Bug 31619 - [RADEON:KMS::DYNPM] desktop freezes quickly every now and then with dynpm
Summary: [RADEON:KMS::DYNPM] desktop freezes quickly every now and then with dynpm
Status: RESOLVED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
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Reported: 2010-11-14 07:07 UTC by Ernst Sjöstrand
Modified: 2012-02-19 04:33 UTC (History)
0 users

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Description Ernst Sjöstrand 2010-11-14 07:07:57 UTC 
This is with linux 2.6.37 from xorg-edgers.
If I do
echo dynpm > /sys/class/drm/card0/device/power_method
Run compiz
Grab a window and move it around, every now it freezes quickly and the resumes.
The mouse movement during that period is completely lost.
I'll try more kernels...
Comment 1 Ernst Sjöstrand 2010-11-14 09:07:37 UTC 
It also happens with the drm-next kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-next/2010-11-10-maverick/
It does not happen with Ubuntu Mavericks default 2.6.35 kernel.
Comment 2 Alex Deucher 2010-11-14 09:19:58 UTC 
This is due to the pm code holding a number of locks while waiting to update the clocks.
Comment 3 Jerome Glisse 2011-02-09 08:00:00 UTC 
Do you still have this issue ?
Comment 4 Ernst Sjöstrand 2011-02-09 12:44:44 UTC 
Yes, still happens with 2.6.38-020638rc4-generic from http://kernel.ubuntu.com/~kernel-ppa/mainline/
Any reason that it should be gone?
Comment 5 Christian Petrov 2011-04-30 11:47:42 UTC 
Confirmed with rv710.
Comment 6 Ernst Sjöstrand 2012-02-19 04:33:32 UTC 
This seems to be fixed with 3.2!

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