Quote Originally Posted by sugarat View Post
I'll give those a try. Silly question - when I edit /boot/grub/grub.cfg, - do those parameters actually need a dash in front of them, or is that just your formatting?
Its just formatting. Use the parameters without the leading dashes. But you shouldn't edit /boot/grub/grub.cfg, instead edit /etc/default/grub. Add the parameter to the line starting GRUB_CMDLINE_LINUX, save the file, then run:
Code:
sudo update-grub
Code:
root@adam-PC:/boot/grub# cd /sys/class/backlight && grep . */*
intel_backlight/actual_brightness:4393
intel_backlight/bl_power:0
intel_backlight/brightness:4393
grep: intel_backlight/device: Is a directory
intel_backlight/max_brightness:4882
grep: intel_backlight/power: Is a directory
grep: intel_backlight/subsystem: Is a directory
intel_backlight/type:raw
Does the following command decrease brightness?
Code:
echo 2400 | sudo tee /sys/class/backlight/intel_backlight/brightness