[Tested with Ubuntu Lucid Lynx 10.04 LTS]
MacBookAir 1,1 and Ubuntu 10.04 (Lucid Lynx)
You can find out, what model you have by typing at the terminal:
sudo dmidecode -s system-product-name
If you have a different model, please go here and find the right wiki.
To enable wireless you need to install the restricted Broadcom STA driver. If you don't have wired internet access, download these packages using another computer:
Install them in this order (by double clicking them). Then restart the computer.
Display brightness and keyboard backlight work (incl. auto-adjust), but requires you to add the Mactel PPA and install pommed and additional packages from there. Reboot after installation/upgrade
Add the following to /etc/modprobe.d/options:
options snd_hda_intel model=mbp3