linux-kernel - Re: [Bug 9944] suspend to ram doesn't work anymore on Thinkpad T61 with Intel X3100

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Date:	Tue, 12 Feb 2008 23:27:59 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	bugme-daemon@...zilla.kernel.org,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Bug 9944] suspend to ram doesn't work anymore on Thinkpad T61 with Intel X3100

On Tuesday, 12 of February 2008, bugme-daemon@...zilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=9944
> 
>
> > Distribution: Debian Sid
> > Hardware Environment: Thinkpad T61
> > Software Environment: 
> > Problem Description:
> > 
> > Suspend to ram doesn't work anymore on my thinkpad t61 with 2.6.25-rc1. On
> > 2.6.24 I had to pass acpi_sleep=s3bios at boot time and suspend with s2ram -f
> > -a 3.
> > 
> > On 2.6.25-rc1 doing (on console, with X not running) that leads to a blank
> > screen and the ___sleep___ led (the moon) on the thinkpad blinks (like when it
> > is currently suspending), but nothing happens then.
> > 
> > If I can make some more tests, or if you need more info, please ask. I hope
> > this is no duplicate.
> > 
> 
> I have a t61p and suspend/hibernate is bad and deteriorating.  So
> many things go wrong that I'm afraid to test it any more.

There are at least two known suspend regressions, one of which affects the T61
for sure.  There's a fix for it, available at:
http://lkml.org/lkml/2008/2/11/472

The fix for the second issue is in the works.
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