Bug 41982

Summary:	Resume from hibernation sometimes fails unless "Use mwait to offline a processor" patch backed out
Product:	Platform Specific/Hardware	Reporter:	Jonathan Nieder (jrnieder)
Component:	i386	Assignee:	platform_i386
Status:	RESOLVED CODE_FIX
Severity:	normal	CC:	greg, rjw
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.32.45, 2.6.33.18	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	7216

Description Jonathan Nieder 2011-08-29 20:53:43 UTC

Subject    : Resume from hibernation sometimes fails
Submitter  : Frédéric Boiteux <fboiteux@calistel.com>
Submitter  : Robert Scott <bugs@humanleg.org.uk>
Date       : 2011-04-11 15:06:06
Message-ID : 20110411110859.6670.40263.reportbug@localhost.localdomain
Reference  : http://thread.gmane.org/gmane.linux.kernel.stable/6341/focus=16950
First-Bad-Commit : 226917b0735f31cf5c704e07fdd590d99bbfae58
First-Bad-Commit : 74a6e0fd8fc216cfa5edcde4bd356a8972cbc74c

This entry is being used for tracking a regression in the 2.6.32.y and 2.6.33.y
longterm trees. Please don't close it until the problem is fixed there.

The triggering commit was intended to improve power consumption: see bug 5471.
2.6.39.y, which includes the same change, works fine.

Comment 1 Greg Kroah-Hartman 2011-08-31 21:40:02 UTC

This fix will be reverted in the next .32 and .33 releases.

Comment 2 Jonathan Nieder 2011-09-01 20:54:32 UTC

Thanks, Greg!  Work still continues to find what upstream fix is needed to get bug 5471 fixed in those trees again (being tracked at http://bugs.debian.org/622259 at the moment).