linux-kernel - Re: 2.6.21-rc1: known regressions (part 2)

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Message-ID: <20070227103021.GA2250@kernel.dk>
Date:	Tue, 27 Feb 2007 11:30:21 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Pavel Machek <pavel@....cz>
Cc:	Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Michael S. Tsirkin" <mst@...lanox.co.il>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, linux-pm@...ts.osdl.org,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Daniel Walker <dwalker@...sta.com>
Subject: Re: 2.6.21-rc1: known regressions (part 2)

On Tue, Feb 27 2007, Pavel Machek wrote:
> Hi!
> 
> > > This email lists some known regressions in 2.6.21-rc1 compared to 2.6.20
> > > that are not yet fixed in Linus' tree.
> > > 
> > > If you find your name in the Cc header, you are either submitter of one
> > > of the bugs, maintainer of an affectected subsystem or driver, a patch
> > > of you caused a breakage or I'm considering you in any other way possibly
> > > involved with one or more of these issues.
> > > 
> > > Due to the huge amount of recipients, please trim the Cc when answering.
> > > 
> > > 
> > > Subject    : ThinkPad T60: system doesn't come out of suspend to RAM
> > >              (CONFIG_NO_HZ)
> > > References : http://lkml.org/lkml/2007/2/22/391
> > > Submitter  : Michael S. Tsirkin <mst@...lanox.co.il>
> > >              Thomas Gleixner <tglx@...utronix.de>
> > > Handled-By : Ingo Molnar <mingo@...e.hu>
> > > Status     : unknown
> > 
> > x60 doesn't resume from S2R either, it doesn't matter if CONFIG_NO_HZ is
> > set or not though. 2.6.20 worked fine.
> 
> It somehow works for me. As long as I do not play with bluetooth and
> suspend to disk...

It locks solid here on resume, going back to 2.6.20 makes it work
perfectly again. In between 2.6.20 and 2.6.21-rc1 some ACPI change broke
resume, but that got fixed. Some other change later snuck in that broke
it AGAIN for me, sigh.

I don't use bluetooth nor suspend to disk.

-- 
Jens Axboe

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