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Subject[REGRESSION]: hibernate/sleep regression w/ bisection

Hibernate/sleep (echo disk/mem > /sys/power/state) has presented problems
for me starting with 2.6.39. Kernel was the last completely bug-free
version I used (I skipped the 2.6.38 branch entirely).

The symptoms are that upon resume (from sleep/hibernate) there is no video
nor any keyboard input with the exception of sysrq.

It has been a frustrating bug to hunt down because it is not easily
reproduced; sometimes the bug doesn't pop up until after a long sequence of
hibernate/sleep cycles.

I successfully bisected the problem to: 8ee294cd9def000.

Commit: 8ee294cd9def0004887da7f44b80563493b0a097
Author: Dmitry Torokhov <>
Date: Mon Nov 15 01:39:57 2010 -0800
Input: serio - convert to common workqueue instead of a thread

Backing out 8ee294cd9def000 (which requires reversing part of
1d64b655dc083df also) fixes this particular problem on,
3.0.8, and 3.1.

Unfortunately, in 3.0.8 and 3.1 I have other suspend/hibernate problems
that I will investigate next and detail in a different regression report.

~ Andy

System specs: P4/Radeon GPU

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