I have ubuntu 11.10 installed on an old 2008 macbook. There is an issue of screen dimming that I didnt find anywhere else on the forums.
The issue is that the screen is dimmed when I open certain applications (Firefox, Software Center) and this cannot be readjusted by the physical brightness buttons on the keyboard. I tried a bunch of things on the barely barely visible screen, and had no choice but to restart. This has happened everytime.
Does anyone know how to solve this?