Hello everybody.

I recently obtained a successful dual-boot of Ubuntu on my Macbook (the higher end 13", as shown on the Apple website, no other modifications).

However, the brightness control does not work. As well as this, no sound comes out of the speakers, whether it be my earbuds or built-in speakers, so I suspect it is a driver problem.

I've already checked the Ubuntu guide to installing the correct drivers, and have ALSA present. It seems to recognize it, but there is still no sound.

Does anyone have suggestions?

Thanks in advance.