linux-kernel - Re: [Bug #15096] Resume lock up -- bisected, commit 3a1151e3f124fd1a2c54b8153f510f1a7c715369

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Message-Id: <201002082022.43515.rjw@sisk.pl>
Date:	Mon, 8 Feb 2010 20:22:43 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Rafał Miłecki <zajec5@...il.com>
Cc:	Stefan Bader <stefan.bader@...onical.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Len Brown <len.brown@...el.com>,
	Zhang Rui <rui.zhang@...el.com>
Subject: Re: [Bug #15096] Resume lock up -- bisected, commit 3a1151e3f124fd1a2c54b8153f510f1a7c715369

On Monday 08 February 2010, Rafał Miłecki wrote:
> 2010/2/8 Stefan Bader <stefan.bader@...onical.com>:
> > Rafael J. Wysocki wrote:
> >> On Monday 08 February 2010, Rafał Miłecki wrote:
> >>> 2010/2/8 Rafael J. Wysocki <rjw@...k.pl>:
> >>>> This message has been generated automatically as a part of a report
> >>>> of regressions introduced between 2.6.31 and 2.6.32.
> >>>>
> >>>> The following bug entry is on the current list of known regressions
> >>>> introduced between 2.6.31 and 2.6.32.  Please verify if it still should
> >>>> be listed and let the tracking team know (either way).
> >>>>
> >>>>
> >>>> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=15096
> >>>> Subject         : Resume lock up -- bisected, commit 3a1151e3f124fd1a2c54b8153f510f1a7c715369
> >>>> Submitter       : Rafał Miłecki <zajec5@...il.com>
> >>>> Date            : 2010-01-20 23:15 (19 days old)
> >>>> First-Bad-Commit: http://git.kernel.org/git/linus/3a1151e3f124fd1a2c54b8153f510f1a7c715369
> >>
> >> It looks like we should revert this commit, seems broken.
> >
> > Hm, otoh we had definitely people with some Asus laptops who where only be able
> > to use backlight control with it. So I would rather prefer some work around to
> > the suspend/resume problem (_DOS if I understood correctly).
> 
> It's same case with my Sony VAIO. Without this I can not control
> backlight. Eventually I can hack on GPU registers directly, but I
> don't think it can be called solution.

Well, do I understand correctly that without commit
3a1151e3f124fd1a2c54b8153f510f1a7c715369 you can't control the backlight,
but with the commit applied there's a resume problem on your box?

Rafael
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