Control the brightness and contrast of an lvds screen on I.MX6 bord

[mgk]

Hi all,

I would like to control the screen's brightness and contrast on my i.mx6 quad board (an udoo quad board) under ubuntu linaro

I tried to modify the brightness through /sys/class/backlight/pwm-backlight.0/brightness but is not working.

I tried the same thing on other files to do rotation and it worked.

Did someone succeeded to do change these parameters ?

Thanks in advance.

MG

[kane88]

echo 200 > /sys/class/backlight/pwm-backlight.0/brightness

try the above & post the status .

does the above help  ???

[mgk]

Hi,

Thanks for the reply.

I already tried that. No success.

MG