linux-kernel - Re: When come back from RAM, lcd brightness is changed

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Message-Id: <200709302148.07589.rjw@sisk.pl>
Date:	Sun, 30 Sep 2007 21:48:07 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Renato S. Yamane" <renatoyamane@...dic.com.br>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: When come back from RAM, lcd brightness is changed

On Sunday, 30 September 2007 21:25, Renato S. Yamane wrote:
> uname -a
> Linux mandachuva 2.6.22.9-cfs-v22 #2 PREEMPT Sun Sep 30 15:21:17 BRT 
> 2007 i686 GNU/Linux
> 
> Distro: Debian Etch
> 
> When I use KPowersave and click on "Suspend to RAM", my laptop Toshiba 
> M45-S355 "sleep" and "wake-up" very well, but LCD Brightness is changed 
> to MAX (I hate this "sunshine" on my eyes).
> 
> One more detail: Kernel Linux don't have control of lcd brightness, so I 
> need use omnibook driver to do this (<http://omnibook.sourceforge.net>).

Well, that probably is the reason why the brightness changes after a resume.

As a workaround you can probably use a wrapper script to set the brightness
to the desired level after a resume from RAM.

Greetings,
Rafael
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