[meta-intel] Intel Atom E3845: Backlight control

[Prasant J]

Hi,

I'm using Intel Atom E3845 with my custom hardware. I have an LVDS display
and I would like to control the brightness from the linux shell.

I used the command:
xrandr --output DP2 --brightness <val>

This command (I think) changes the gamma factor of the display but the
actual back light intensity is not changed.


I tried changing the value of:
/sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/brightness
but still no change in the back light intensity.


Any inputs on how can I control the back light intensity of my LVDS display?


Regards, Pj
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/meta-intel/attachments/20151125/9e66ac0c/attachment.html>