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Date:      Sun, 19 Oct 2014 10:20:17 -0700
From:      Adrian Chadd <adrian@freebsd.org>
To:        Renato Aguiar <renato@aguiar.info>
Cc:        "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, Lars Engels <lars.engels@0x20.net>, Wojciech Puchar <wojtek@puchar.net>
Subject:   Re: help with backlight control and memory
Message-ID:  <CAJ-VmokW=cJaisC0-7%2Bc0UmdSfVZBxUhHKJ_q%2BrazZUFDE288w@mail.gmail.com>
In-Reply-To: <86d29ot9dg.fsf@aguiar.info>
References:  <alpine.BSF.2.11.1410161415440.39168@laptop> <CAJ-VmokRqoBj_jqcvtJ1WOMYX_Vu3G5Tx6ZGxocY0Xz9xyUYNA@mail.gmail.com> <alpine.BSF.2.11.1410182303050.756@laptop> <20141019102848.GR72082@e-new.0x20.net> <86d29ot9dg.fsf@aguiar.info>

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Is this running the latest -HEAD?

Yes, some extra code was glued into the i915kms / drm2 code from Linux
that correctly selected the right video output device for the
brightness controls. (the opcontrol patch that I committed a couple
months back.)

The buttons don't work on my X series laptop, but the sysctl does. the
buttons work for others on  other X series laptops. It's likely some
more ACPI and i915kms things need porting.



-a


On 19 October 2014 07:34, Renato Aguiar <renato@aguiar.info> wrote:
> Hi Lars,
>
> On my X230 I only can change brightness calling acpi directly using
> acpi_call. Did you make some additional configuration to be able to use
> sysctl to control brightness?
>
> Thanks,
>
> Lars Engels writes:
>
>> On Sat, Oct 18, 2014 at 11:03:38PM +0200, Wojciech Puchar wrote:
>>> tried. jsut after kernel is loaded backlight control keys stops working.
>>> tried loading every acpi_* kernel module that is available, with no
>>> results
>>
>> On my X230 running HEAD brightness keys only work when acpi_video.ko is
>> _not_ loaded. When it is loaded, I can control brightness with sysctl,
>> though.
>
> --
> Renato Aguiar



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