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L3.10.53 Xorg xrandr command

Question asked by torus1000 on Jul 10, 2015
Latest reply on Sep 16, 2016 by chandrasekhar mattaparthy

Hi Chip experts,


According to the document, xrandr command already supported.


So I tried to change --brightness or --gamma of my SabreSD board but nothing changed.


Have those xrandr parameters been supported?


If somebody knows, please let me know. Please see attached log.



root@imx6dlsabresd:~# export DISPLAY=:0.0

root@imx6dlsabresd:~# xrandr --output "DISP3 BG - DI1" --brightness 0.5

root@imx6dlsabresd:~# xrandr --output "DISP3 BG - DI1" --gamma 1.5:1.5:1.5

root@imx6dlsabresd:~# xrandr --verbose

Screen 0: minimum 240 x 240, current 1024 x 768, maximum 8192 x 8192

DISP3 BG - DI1 connected 1024x768+0+0 (0x40) normal (normal left inverted right x axis y axis) 0mm x 0mm

        Identifier: 0x3f

        Timestamp:  1838592668

        Subpixel:   unknown

        Gamma:      1.0:1.0:1.0

        Brightness: 0.0


        CRTC:       0

        CRTCs:      0

        Transform:  1.000000 0.000000 0.000000

                    0.000000 1.000000 0.000000

                    0.000000 0.000000 1.000000


  U:1024x768p-60 (0x40)   65.0MHz -HSync -VSync -CSync *current +preferred

        h: width  1024 start 1064 end 1124 total 1344 skew    0 clock   48.4KHz

        v: height  768 start  775 end  785 total  806           clock   60.0Hz

root@imx6dlsabresd:~# xrandr -o left

root@imx6dlsabresd:~# xrandr -o right

root@imx6dlsabresd:~# xrandr -o inverted

root@imx6dlsabresd:~# xrandr -o normal

root@imx6dlsabresd:~# xrandr -s 1920x1080

Size 1920x1080 not found in available modes

root@imx6dlsabresd:~# xrandr -s 1024x768