[clug] brightness settings wonky after Ubuntu 10.10 upgrade

Ben Davies ben.davies at anu.edu.au
Tue Sep 13 18:11:58 MDT 2011

Hi all,

Does anyone know much about configuring under the hood brightness settings in 
Ubuntu 10.10?

I recently upgraded my Dell XPS M1330 laptop to 10.10 & somehow this has mucked 
up the brightness modulation. Specifically, I've lost some of the intermediate 
brightness settings, so the 10.10 brightness steps are larger. This means I've 
lost my normal/comfortable use brightness setting. I've only been using the 
keyboard to adjust brightness too.

Various googling hasn't revealed much. The "echo -n ... " to the acpi brightness 
file does nothing (using su).

Any ideas?


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