How to change LCD backlight dimness automatically on boot

Questions about Grub, UEFI,the liveCD and the installer
Forum rules
Before you post please read how to get help

How to change LCD backlight dimness automatically on boot

Postby blueplastic on Thu Nov 22, 2012 9:47 pm

Hi, I just installed Linux Mint and have a quick question about the best approach to change my laptop's dimness upon boot.

When I'm logged in as root, I can run a command like this with a number between 0 (min brightness) and 15 (max) to change the brightness:

echo 8 > /sys/class/backlight/acpi_video0/brightness

But how can I get that to run as boot without password each time I login.

If I should change the /etc/rc.local file, then what exactly should I add in there so that the command runs without prompting for password?
blueplastic
Level 1
Level 1
 
Posts: 3
Joined: Thu Nov 22, 2012 9:39 pm

Linux Mint is funded by ads and donations.
 

Re: How to change LCD backlight dimness automatically on boo

Postby blueplastic on Thu Nov 22, 2012 10:07 pm

I'm guessing I have to add something like this to the rc.local file, but that doesn't do the trick:

echo 8 | sudo tee /sys/class/backlight/acpi_video0/brightness
blueplastic
Level 1
Level 1
 
Posts: 3
Joined: Thu Nov 22, 2012 9:39 pm


Return to Installation & Boot

Who is online

Users browsing this forum: No registered users and 17 guests