I am running Linux (Debian Sid) on an iBook G4.  I was pleased to find 
that kernel 2.6.7 had support for my radeon chip, unlike earlier kernels, 
along with good support for the IDE chipset.  The iBook G4 is the newer 
1Ghz model; lspci -vv is attached.  I'm running kernel 2.6.7 stock.

The USB support has been a bit buggy.  I have two USB Mass Storage devices 
that have been having bad interactions, sometimes giving me oopses.  When 
the oopses occurred, I did dmesg | ksymoops to get more information about 
it.

The first time I plugged a Belkin Multi-Flash Memory Reader in to the USB 
port, and although I had a 128MB SD card in it, Linux reported "No medium 
found".  I tried with a CompactFlash card as well, but got the same 
result.  The setup worked just fine on a reboot to Mac OS X.  (On further 
examination, it seems the device also reports "No medium found" on Windows 
2000 with a Compact Flash card in it.  I'll follow up on this later; don't 
worry about this for now.)

Next I plugged an iHP-120 iRiver portable hard drive-based music player 
into the other USB port.  I got an oops; attached is "iriver-after-lexar", 
the dmesg|ksymoops result.

On a later boot, plugging the iRiver in caused an oops; dmesg|ksymoops 
output is attached as "iriver-crashing-messages".  I rebooted, and the 
iRiver worked fine as a USB mass storage device; the kernel's messages 
after success are attached as "iriver-success-messages".

I would be happy to try patches or tests if deemed necessary.  I am in 
Uganda while I normally live in the U.S., so I may be a bit slower than I 
would otherwise to respond.  Hopefully we can get this snag in iBook 
support behind us.  I would like to be CC:'d on reply.

I have also attached my .config as config-2.6.7take2.

-- Asheesh.

P.S. If there's someone (perhaps at Apple) I can bother to get the Airport 
Extreme to work, I'd be more than happy to do so.

-- 
Be cautious in your daily affairs.