How to make my screen brightness not change when I plug my laptop in

Posted by user63985 on Ask Ubuntu See other posts from Ask Ubuntu or by user63985
Published on 2012-05-16T22:14:08Z Indexed on 2012/10/01 15:53 UTC
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I do not want my laptop to change brightness when my laptop power is plugged in or unplugged. I set my brightness based on how bright my surroundings are. If I am in a dark room, I set my brightness very low and when I plug my laptop in the brightness gets set to maximum which feels like sticking my eyes in boiling lava.

In System Settings ? Brightness and Lock the Dim screen to save power checkbox is unchecked.

My laptop is an HP Mini 110

In case it is an acpi issue I have put my acpi-support file here

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