Every time the computer reboots, the brightness settings are reset. I wanted to have different default brightness when I turn on the computer, because I was a bit tired of the same few keypresses every time I boot it up.
Depending on your system, the path where to find the brightness value (from the shell) is:
(That's it on a Lenovo Thinkpad S21e)SYS_BRIGHT/sys/class/backlight/intel_backlight/brightness
If your path is different (different vendor), try to "tab-find" the right subfolder in /sys/class/backlight.
Here's a list of brightness-steps when using Xubuntu 14.04's default settings (step size = 781):
If you want to set the default when you boot your system, write the above line into your /etc/rc.local.
Code: Select all
7812 brightest 7031 6250 5469 4688 3907 medium 3126 ... 1564 783 2 off / darkest [code] Due to the "unix philosophy" that everything's a file, you can use it to set the brightness by writing the desired value to it. [code]echo 4700 > $SYS_BRIGHT
Remember screen brightness settings in Ubuntu and Linux Mint