This is the FAQ for the PowerPC port.

wireless is not working

Apple G4 iBooks and ?PowerBooks come with Broadcom chips. You will need to determine the model before you install the proper driver. Run the command lscpi |grep Wireless to find out.

You will also need the contrib and non-free repositories in your sources.list file. If you have the BCM4318 chip, for example, you would install the following package,

apt-get install firmware-b43-installer

For more help, see bcm43xx

How to get Graphics working: ATI/Radeon

Since Jessie KMS is on by default, now these parameters are needed at boot to get accelerated graphics working,

Linux radeon.modeset=1 video=offb:off video=radeonfb:off radeon.agpmode=-1

Once you login add these to the yaboot.conf file and update using the command ybin -v as root. See example

image=/boot/vmlinux

Radeon 9000 graphics cards, however, freezes with accelerated graphics enabled. This requires turning off acceleration when KMS is enabled. This is done by enable this option in xorg.conf

Option "?NoAccel" "True"

For more help on Radeon graphics see Dan DeVoto's blog

Why doesn't sound work?

If sound isn't working out of the box, it may be muted by default. Open a volume utility like alsamixer and unmute the Master Volume as well as any speakers or headphones. Then turn up the Master Volume, and also the PCM level (to be kept at or below 75% to avoid distortion).

If you still don't have sound, you may need to add snd-aoa-i2sbus to /etc/modules.

A handful of Mac models (seems to be mostly G3 & G4 iBooks) have sound disabled due to a bug in the 3.16 kernel. A patch that fixes this has been submitted to the kernel development team and will likely show up in a 4.xx kernel. As a temporary workaround, users experiencing this bug can downgrade to the 3.2.0-4 kernel found in oldstable.