On Tue, Nov 01, 2011 at 07:48:19AM -0500, Andrew Watts wrote: > Hi. > > Hibernate/sleep (echo disk/mem > /sys/power/state) has presented problems > for me starting with 2.6.39. Kernel 2.6.37.6 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 <dmitry.torokhov@xxxxxxxxx> > 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 2.6.39.4, > 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. Does the following patch fix the problem? Thanks. diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index ba70058..95aeebd 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -949,6 +949,7 @@ static int serio_resume(struct device *dev) * deal with it. */ serio_queue_event(serio, NULL, SERIO_RECONNECT_PORT); + queue_work(system_long_wq, &serio_event_work); return 0; } _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/linux-pm
