Com xrandr
, você pode afetar o gama e o brilho de uma exibição alterando os valores RGB.
De man xrandr
:
-
%código%
Multiply the gamma values on the crtc currently attached to the output to specified floating value. Useful for overly bright or overly dim outputs. However, this is a software only modification, if your hardware has support to actually change the brightness, you will probably prefer to use
xbacklight
.
xrandr --output DVI-1 --brightness .7
Existe também o pacote --brightness
, que faz muito do mesmo, mas ...
-
%código%:
Note that the
xgamma
utility is obsolete and deficient,xrandr
should be used with drivers that support the XRandr extension.
xgamma -gamma .7