From owner-freebsd-hackers@FreeBSD.ORG  Tue Oct 21 12:33:51 2014
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Date: Tue, 21 Oct 2014 14:33:34 +0200 (CEST)
From: Wojciech Puchar <wojtek@puchar.net>
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To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: help with backlight control and memory
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Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>,
 Renato Aguiar <renato@aguiar.info>, Lars Engels <lars.engels@0x20.net>
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OK so for now i will just keep it as is. it's not really a big deal

On Sun, 19 Oct 2014, Adrian Chadd wrote:

> 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
>
>