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======================================================================== !!! This repo only exists for historic purposes, it's not maintained !!! !!! and issues won't be resolved here. !!! !!! Please check this fork and report issues there: !!! !!! !!! !!! https://github.com/FreeBSDDesktop/intel_backlight_fbsd !!! !!! !!! ======================================================================== This is part of FreeBSD ports. Please install from ports: cd /usr/ports/graphics/intel-backlight make install clean or from packages: pkg install intel-backlight This allows to control the backlight level on certain Intel(R) GPUs, including i915. This has been taken from intel-gpu-tools which can be found here: http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/ Originally ported to FreeBSD by "emmex" of the FreeBSD forums. Build: pkg install libpciaccess libdrm make make install (this installs intel_backlight setuid root, so any user can execute it). Usage: $ intel_backlight current backlight value: 30% (281/937) $ intel_backlight 50 current backlight value: 15% (141/937) set backlight to 50% (469/937) $ intel_backlight incr current backlight value: 50% (469/937) set backlight to 51% (478/937) $ intel_backlight incr current backlight value: 51% (478/937) set backlight to 60% (562/937) $ intel_backlight incr current backlight value: 60% (562/937) set backlight to 70% (656/937) $ intel_backlight decr current backlight value: 70% (656/937) set backlight to 60% (562/937) $ intel_backlight decr current backlight value: 60% (562/937) set backlight to 51% (478/937) The included example allows adjusting brightness automatically based on the input of the isl driver (currently not part of standard FreeBSD). Usage: ./isl_backlight.sh &