linux-kernel - Re: regression 2.6.37 -> 2.6.38-rc1: after suspend backlight cannot be adjusted

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Date:	Fri, 21 Jan 2011 15:29:58 +0800
From:	Zhang Rui <rui.zhang@...el.com>
To:	Norbert Preining <preining@...ic.at>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	ACPI Devel Mailing List <linux-acpi@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: regression 2.6.37 -> 2.6.38-rc1: after suspend backlight
	cannot be adjusted

btw, please attach the acpidump of this laptop.

thanks,
rui

On Fri, 2011-01-21 at 15:28 +0800, Zhang Rui wrote:
> how do you change the backlight? hotkeys?
> does changing /sys/class/backlight/acpi_video0/brightness work for you?
> 
> thanks,
> rui
> 
> On Fri, 2011-01-21 at 14:46 +0800, Norbert Preining wrote:
> > Hi Eric, hi all
> > 
> > On Fr, 21 Jan 2011, Eric Dumazet wrote:
> > > Maybe this is the problem Linus had to bisect, you could try his patch :
> > 
> > > Or just pull linux-2.6, since patch is now committed
> > > 
> > > commit 28e58ee8ce1f0e69c207f747b7b9054b071e328d
> > 
> > I am now running on top of 8d99641f6c1a so I have this patch included,
> > but still see the same problem. Adjustment *before* suspend works,
> > afterwards does not.
> > 
> > Can someone give me a quick notive how to bisect only those commits
> > that touch the relevant parts? acpi?
> > 
> > Best wishes
> > 
> > Norbert
> > ------------------------------------------------------------------------
> > Norbert Preining            preining@...ist.ac.jp, logic.at, debian.org}
> > JAIST, Japan                                 TeX Live & Debian Developer
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> > ------------------------------------------------------------------------
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