Linux: Slackware 15.0. (My main Slackware page.)
Laptop: Lenovo 11e ("Thinkpad")
For my Assembly Nights 2 setup, I’m often booting up my laptop at night and I want a no-fuss way to ensure that the backlight is set comfortably low so I can get to sleep.
With just a wee bit of experimentation, I found the backlight setting for this machine here:
And writing smaller values would, indeed, dim the backlight.
So I finally got the "bright" idea to check the time at boot and if the hour is sufficiently late, dim the backlight. Works great!
$ cat /etc/rc.d/rc.local #!/bin/bash if [[ $(date +%H) -ge 20 ]] then echo "Night time backlight!" echo 1000 > /sys/class/backlight/intel_backlight/brightness fi