linux-kernel - Re: i915 backlight

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Message-ID: <CAMP44s1WMMXcGfF6Ta0CFthY3-7tkpqXEPx1iZhVU-XpS6KUWw@mail.gmail.com>
Date:	Fri, 2 Aug 2013 01:48:37 -0500
From:	Felipe Contreras <felipe.contreras@...il.com>
To:	Josep Lladonosa <jlladono@...il.com>
Cc:	Aaron Lu <aaron.lu@...el.com>, Borislav Petkov <bp@...en8.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>, intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	lkml <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: i915 backlight

On Fri, Aug 2, 2013 at 1:25 AM, Josep Lladonosa <jlladono@...il.com> wrote:
> Hello,
>
> I am using a Lenovo Edge E530 and, with kernel 3.11.0-rc3, I had to
> change to this parameter to the kernel boot:
>
>
> GRUB_CMDLINE_LINUX="acpi_osi=\"!Windows 2012\""

I think it's pretty obvious that for the time being we need to
blacklist a ton of machines so they boot without this OSI. In fact, in
might make sense to simply remove the OSI completely for all machines
(for now).

-- 
Felipe Contreras
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