From: "Canek Peláez Valdés" <caneko@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Where does /sys/class/backlight/intel_backlight come from?
Date: Fri, 16 Mar 2012 14:18:57 -0600 [thread overview]
Message-ID: <CADPrc82igwbJqtoJfmXFvBiActkAWLTTrdc2C4Tm9HgjBpNq-w@mail.gmail.com> (raw)
In-Reply-To: <CAN0CFw2+yrNn03fazU4HSwAUpDNfN47xmzvVTa-zScXE2iQ+7g@mail.gmail.com>
On Fri, Mar 16, 2012 at 2:14 PM, Grant <emailgrant@gmail.com> wrote:
> Does anyone know which kernel option would be responsible for
> /sys/class/backlight/intel_backlight? I've disabled some backlight
> stuff in the kernel but the directory still appears. I get screen
> backlight control on my laptop if I do:
>
> echo 0 > /sys/class/backlight/intel_backlight/brightness
>
> but if xlockmore blanks my screen, I have to issue the above again
> before screen backlight control works again. I also have acpi_video0
> in /sys/class/backlight and I think removing intel_backlight might fix
> the problem.
>
> I could try deleting the directory. Is that safe? Are the files and
> folders in /sys generated dynamically at boot?
The /sys directory is like /proc; it's a virtual directory which
serves as interface to several kernel knobs. I don't think you can
remove any dir from it, and if you do, next boot it will show up
again.
Regards.
--
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México
next prev parent reply other threads:[~2012-03-16 20:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-16 20:14 [gentoo-user] Where does /sys/class/backlight/intel_backlight come from? Grant
2012-03-16 20:18 ` Canek Peláez Valdés [this message]
2012-03-17 0:12 ` Grant
2012-03-16 21:31 ` Paul Hartman
2012-03-17 2:32 ` Grant
2012-03-17 16:36 ` Grant
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