Screen Brightness reset to maximum after each restart in Ubuntu
I just installed Ubuntu 13.10 in my Dell Inspiron 3421. Previously there was no problem with the screen brightness.
But certainly i was having the problem with screen brightness. I normally work with low screen brightness.
But whenever i restart my Laptop the Screen Brightness was set to maximum. If you are also having this same problem then i have found the fix for this. Let’s see how i was able to fix the screen brightness issue.
First open the Terminal and type
and it will open file(rc.local in gedit) then add the following code just above the line exit 0
echo 7 > /sys/class/backlight/acpi_video0/brightness
You can change the number 7 which is the brightness level value.
Source: Ask Ubuntu