DSBDisplaySettings is a Qt program for FreeBSD that allows you to configure/change properties of your X display/video outputs. That is, DPMS settings, blanktime, graphics mode, software and LCD brigtness, and gamma correction.
DSBDisplaySettings depends on devel/qt5-buildtools, devel/qt5-core, devel/qt5-linguisttools, devel/qt5-qmake, x11-toolkits/qt5-gui, x11-toolkits/qt5-widgets, and x11/xrandr
# git clone https://github.com/mrclksr/DSBDisplaySettings.git
# git clone https://github.com/mrclksr/dsbcfg.git
# cd DSBDisplaySettings && qmake && make
# make install
DSBDisplaySettings saves the settings in a shell script at
~/.config/DSB/dsbds.sh
. Make this script execute on session start by
adding the line
~/.config/DSB/dsbds.sh
to your ~/.xinitrc
or to your window manager's startup script.