linux-kernel - Re: 2.6.27-rc6: nohz + s2ram = need to press keys to get progress

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Date:	Sun, 14 Sep 2008 19:35:36 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	kernel list <linux-kernel@...r.kernel.org>,
	Linux-pm mailing list <linux-pm@...ts.osdl.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2.6.27-rc6: nohz + s2ram = need to press keys to get progress

On Sun 2008-09-14 12:14:06, Pavel Machek wrote:
> On Sun 2008-09-14 12:09:13, Pavel Machek wrote:
> > On Sun 2008-09-14 04:56:48, Thomas Gleixner wrote:
> > > Pavel,
> > > 
> > > On Fri, 12 Sep 2008, Pavel Machek wrote:
> > > > The old "you have to press keys to get machine to progress" seems to
> > > > be back :-(. Thinkpad x60.
> > > 
> > > Is there a chance that we get some more information than that ?
> > 
> > Yep.
> > 
> > It does not happen after _every_ s2ram, but when it happens the system
> > limps around in half-dead state with non-blinking cursor etc. Next
> > s2ram will not fix it.
> > 
> > nohz=off helps.
> > 
> > Will try 2.6.27-rc6 w/o any custom patches next (not that I have
> > anything interesting in that area), and then probably 2.6.26.
> 
> It _does_ happen with mainline 2.6.27-rc6.

s2ram hs problem in mainline 2.6.26, too. (Different problem: no
ammount pressing shift helps there.) nohz=off cures it, too.

How to proceed?

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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