Where does /sys/class/backlight/intel_backlight come from?
On Fri, Mar 16, 2012 at 2:14 PM, Grant <firstname.lastname@example.org> 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
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México