If anyone has any suggestions or links, I'd be truly grateful. The brightness is not working, the screen stays at maximum brightness.
Thank you for your help. I followed the instructions from the link below and now the brightness adjustment works.
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Welcome to Ask Ubuntu! **;-)** Could you please give us a bit more information like: Is it too dark? Is it too bright? What's the output of `ls /sys/class/backlight/` Please [edit] your question and add this information... – Fabby Jun 27 '15 at 23:58
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This works when typed exactly as directed: http://askubuntu.com/questions/604869/brightness-doesnt-work-on-acer-aspire-4741 http://askubuntu.com/questions/604869/brightness-doesnt-work-on-acer-aspire-4741 – Jefe Jun 29 '15 at 00:14
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See https://askubuntu.com/a/604913/50254
Basically, do following:
sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf
Add following lines
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection
Save (CTRL+X) and reboot the system. Function keys plus arrows should now correctly adjust the backlight and you have 20 possible levels instead of only 4 levels supported by BIOS.
Mikko Rantalainen
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