Check with several livecds if certain laptop feature works.
if not use xrandr. like on my asusg75vw, with broken uefi
after 2 years of kernel.org bugs / gentoo bugs, i still have to use such hacks. kernel.org bugtracker has more explanations, plase search and read my bug reports there. it'S always the same.
examples:
Quote:
roman@ASUS-G75VW ~ $ grep xrandr ~/.i3/config
#xrandr --output LVDS-0 --set Backlight 75
bindsym $mod+F1 exec "xrandr --output LVDS-0 --set Backlight 1"
bindsym $mod+F2 exec "xrandr --output LVDS-0 --set Backlight 10"
bindsym $mod+F3 exec "xrandr --output LVDS-0 --set Backlight 20"
bindsym $mod+F4 exec "xrandr --output LVDS-0 --set Backlight 30"
bindsym $mod+F5 exec "xrandr --output LVDS-0 --set Backlight 40"
bindsym $mod+F6 exec "xrandr --output LVDS-0 --set Backlight 50"
bindsym $mod+F7 exec "xrandr --output LVDS-0 --set Backlight 60"
bindsym $mod+F8 exec "xrandr --output LVDS-0 --set Backlight 70"
bindsym $mod+F9 exec "xrandr --output LVDS-0 --set Backlight 80"
bindsym $mod+F10 exec "xrandr --output LVDS-0 --set Backlight 85"
bindsym $mod+F11 exec "xrandr --output LVDS-0 --set Backlight 90"
bindsym $mod+F12 exec "xrandr --output LVDS-0 --set Backlight 100"
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note: i expect you can use the shell, read bash commands and manpages! or wiki.
I also expect that you can change it to your setup, as these commands were specifically created to work only on my hardware Asus g75vw by myself! do not copy and paste and than say, it does not work bla bla