Bug 19132

Summary:	Changing the default cpufreq govenor freezes suspend
Product:	Power Management	Reporter:	Lukas Grässlin (lukasgraesslin)
Component:	cpufreq	Assignee:	cpufreq
Status:	CLOSED PATCH_ALREADY_AVAILABLE
Severity:	normal	CC:	lenb, lukasgraesslin, preining, rafal, rui.zhang
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.35	Subsystem:
Regression:	No	Bisected commit-id:

Description Lukas Grässlin 2010-09-27 07:16:57 UTC

Since 2.6.35 my Thinkpad X200 with Intel Chipset freezes (the screen is getting black with just a cursor and hangs forever there) on suspend when the default cpufreq govenor is changed. This happens beacuse pm-utils changes the default govenor when going on suspend(-to-ram, but to-disk also I think).

When I disable that changing of the govenor suspend will work again.

This may have to do something with the Intel Graphic as well, because the problem only occurs when beeing on X. Without X the suspend works fine.

With 2.6.34 everything worked well.

See also:

http://lkml.org/lkml/2010/7/22/595
https://bugs.archlinux.org/task/20806
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=586674#51

Comment 1 Lukas Grässlin 2010-10-02 11:14:32 UTC

Mh seems that the problem does not exist in .35.7 anymore. I'm happy :)

Comment 2 Lukas Grässlin 2010-10-03 12:32:45 UTC

Mh or not? I had just the same problem. But yesterday sometimes it worked!? Strange...

Comment 3 Rafał 2010-10-19 09:21:05 UTC

After upgrade to 2.6.35.7 ( kernel26-2.6.35.7-1 in Arch linux) and few tries everything works fine for me.

Comment 4 Zhang Rui 2012-01-18 02:18:59 UTC

But closed as it seems that the problem has already been fixed.

Please feel free to reopen it if the problem still exists in the latest upstream kernel.