After installing latest Catalyst drivers version 10.6 from ubuntu edgers repository, screen brightness has ability to save its state. Lm-sensors works out of the box but shows only CPU temperatures to show GPU temperatures install latest k10temp module from lm-sensors site(this is needed only on pre 2.6.33 kernels). I recommend this laptop for every Linux users looking for fully compatible Linux laptop.
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Card Reader works on Debian GNU/Linux Wheezy with kernel 3.0.1