NOTE:I have translated this article very quick and I don’t speak English very good.
A Mac New Word (With Mac OS X)
Lubuntu 12.04 for PPC
A backup (We’re going to format Mac OS X, but you can make a partition in Mac OS X for GNU/Linux)
For first,you have to insert the Ethernet cable.
Insert the Lubuntu CD’s and press C to boot.
Type in the prompt
It should boot.
Type in a Terminal:
sudo apt-get install firmware-b43-installer
If you have problem to the video type on Yaboot
I thank Alessandro De Filippis for Help me to Install Lubuntu on an iBook