Bug 31619

Summary:	[RADEON:KMS::DYNPM] desktop freezes quickly every now and then with dynpm
Product:	DRI	Reporter:	Ernst Sjöstrand <ernstp>
Component:	DRM/Radeon	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

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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