linux-kernel - Re: X200: Brightness broken since 2.6.29-rc4-58-g4c098bc

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Date:	Fri, 13 Feb 2009 10:42:00 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Nico Schottelius <nico-linux-20090213@...ottelius.org>,
	LKML <linux-kernel@...r.kernel.org>, Len Brown <lenb@...nel.org>,
	Matthew Garrett <mjg@...hat.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: X200: Brightness broken since 2.6.29-rc4-58-g4c098bc


(Cc:s added - post-rc4 ACPI breakage.)

* Nico Schottelius <nico-linux-20090213@...ottelius.org> wrote:

> Hello!
> 
> When using
>   - vmlinuz-2.6.29-rc4-ikn-00058-g4c098bc or
>   - vmlinuz-2.6.29-rc4-ikn-00211-g37bed90
> 
> the brightness of the LCD is almost off (lowest level),
> although kernel reports otherwise:
> 
> [10:31] ikn:~% cat /proc/acpi/video/VID/LCD0/brightness 
> levels:  20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 100
> current: 100
> 
> Changing the brightness via echo 20 > /proc/acpi/video/VID/LCD0/brightness
> only changes the value displayed, the display always keeps the same
> brightness.
> 
> The last time I saw it working was vmlinuz-2.6.29-rc4-ikn-00001-gd5b5623.
> 
> Sincerly,
> 
> Nico
> 
> ps: please CC on reply
> 
> -- 
> Think about Free and Open Source Software (FOSS).
> http://nico.schottelius.org/documentations/foss/the-term-foss/
> 
> PGP: BFE4 C736 ABE5 406F 8F42  F7CF B8BE F92A 9885 188C


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