Message-ID: <51EF773F.40903@gmail.com>
Date: Wed, 24 Jul 2013 14:42:07 +0800
From: Aaron Lu <aaron.lwe@gmail.com>
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To: =?UTF-8?B?SsO2cmcgT3R0ZQ==?= <jrg.otte@gmail.com>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        rafael.j.wysocki@intel.com,
        Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [v3.11-rc2] regression: brightness always on maximum.
References: <CADDKRnBRyJZCoy3G53b6tY7J21XZp5bGn7nJi87WUgEGhSuT_w@mail.gmail.com>
In-Reply-To: <CADDKRnBRyJZCoy3G53b6tY7J21XZp5bGn7nJi87WUgEGhSuT_w@mail.gmail.com>
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On 07/23/2013 03:52 PM, Jörg Otte wrote:
> The brightness of my laptop is always on maximum and can't be scaled
> down.
> Brightness control via function keys was always working on this
> laptop, so this is a regression in v3.11-rc2.

Please list /sys/class/backlight.

If there is a intel_backlight, please try to adjust brightness level
through brightness file like this:
# echo XXX > /sys/class/backlight/intel_backlight/brightness
Does it work?

Thanks,
Aaron

> 
> It is a FUJITSU LIFEBOOK AH532/FJNBB1C, BIOS Version 1.09 05/22/2012
> Video driver is i915.
> 
> Please Cc me in answeres , I am not subscribed.
> 
> Thanks, Jörg
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