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

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Date:	Mon, 8 Feb 2010 20:31:52 +0100
From:	Rafał Miłecki <zajec5@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
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

W dniu 8 lutego 2010 20:22 użytkownik Rafael J. Wysocki <rjw@...k.pl> napisał:
> 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?

That's right.
BEFORE: no backlight controll, resume works fine
AFTER: backlight control, resume locks up machine

-- 
Rafał
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