Many thanks for this, this worked fine for me to bring back my old PowerBook G4 PPC from 2005 to life! It is working again with dual boot OSX10.4 and Lubuntu 16.04.

WIFI works, Bluetooth and sound!

WELL DONE on this one and many many thanks!

pfeifp

The instructions vary based on the default chipset you ended up with in your PowerBook, so it sounds like yours is just different than mine. Unfortunately it’s been 4 years since this post and Ubuntu has changed a lot in that. My PowerBook no longer works and I haven’t played with another in a couple years.

I’ve added all the modules specified that I needed and unblacklisted them as well as removing snd_powermac from my modules file and adding snd_aoa_i2sbus. Nothing really seems to work. do you have any advice?

Thanks for your help, but in my impatience I upgraded from lubuntu 14 to 16 and that introduced several problems. Nevertheless, I persevered and followed your instructions, but sadly it did not work. There seems to be some error message on boot as well that mentions i2c and after the installation others were evident.

For now I am going to start afresh with 14 and maybe give it a go from there. It is not a deal breaker anyway, more of a luxury really. The main issue I had was no WiFI, but managed to sort it, so anything else was extra.
Thanks once again.

I believe you just need to install the libi2c-dev package.

sudo apt install libi2c-dev

Then use sudo with your favorite text editor (nano? vim?) to edit and save the /etc/modules file.

Any chance you can elaborate how and where to get i2c-dev from and how to add it to the /etc/modules file please? (For a complete newbie).
TIA

The removal of snd_aoa from the blacklist.local.conf was to address a sound issue.

For the keyboard backlight I *added* i2c-dev to the /etc/modules file.

Thanks for clarifying the Lubuntu version. I was using 13.10 in this post, and between that and the various chipsets these systems shipped with, there are a variety of solutions :)

BTW, this was with Lubuntu 14.04