error: xrandr -q -> xrandr: Failed to get size of gamma for output default

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fivedai
Posts: 13
Joined: 2018/03/05 08:54:13

error: xrandr -q -> xrandr: Failed to get size of gamma for output default

Postby fivedai » 2018/04/18 11:17:00

[root@localdai tmp]# xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
1920x1080 0.00*

anybody has any suggestion, thanks in advance.

Can't adjust brightness