How to set display contrast or gamma Freescale_Yocto_Project

[arkceajin]

OS: Poky ( Yocto Project Reference Distro ) 1.6.2

Board:  i MAX6Q
I am trying to adjust the display contrast  by this command:

xrandr --output output_name --gamma 1:1:1

Result as fellow:

Desktop Ubuntu : work fine
Yocto : not work

[gusarambula]

Hello Ark,

BSPs older than the 3.10.17-1.0.0 release do not support xrandr. I would recommend migrating to the newest BSP possible.

These newer BSP releases do include some documentation regarding the use of the Xserver video driver so you may want to review this documentation as well.

[arkceajin]

Hello

Thanks for your answer.

the BSP version is imx-3.10.53-1.1.0_ga, and other xrandr command has properly worked, like size,only except xrandr gamma, typed the command into console and nothing happened.