How to prevent Ubuntu from changing screen brightness?

Posted by cholazer on Ask Ubuntu See other posts from Ask Ubuntu or by cholazer
Published on 2012-08-28T02:06:23Z Indexed on 2012/08/28 3:52 UTC
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brightness

I have recently installed 12.04 on ASUS-K53SV-V300. I can change the brightness on start-up with:

echo 0 > /sys/class/backlight/acpi_video0/brightness >> /etc/rc.local

or manually by Fn key.

But, whenever Ubuntu dim my screen brightness to save power or wake-up from suspend or inactive for 20-30 seconds, brightness reset to high (my problem get much more when on battery).

How can I disable screen brightness service to prevent it from changing my brightness? What service work on screen brightness? If I disable this service, can I manually set brightness by command?

I found a program to work on brightness instead of default power manager.

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