I've got Sid booting on a new PBG4 12". The Airport Extreme card isn't working yet, but I didn't expect it to. My current priority is getting X working with the NVidia GeForce4 420 Go. Right now booting with video=ofonly when I run startx I just get vertical lines in two shades of pink, or sometimes blue or green.
I've been futzing around with the kernel (2.4.20-ben5) with and without the Riva driver, and dpkg-reconfiguring xserver-xfree86 with and without the nv module, but I've mostly succeeded in getting it to fail in less spectacular ways. I'm googling around for information on kernel/x drivers for GeForces but am finding mostly things from 2001 or early 2002, so I'm not sure what the current state of things is. I'm wondering whether anyone has any experience or ideas. I've found Ani Joshi's experimental driver and kernel at http://ftp.yellowdoglinux.com/pub/yellowdog/users/ajoshi/ but the kernel can't boot because it can't talk to the IDE controller, and the nv_drv XFree module there is less successful than the one that Sid has installed. As for the rest of the machine, pmud or apm emulation don't seem to be working, and I'm not sure which IDE chipset this model uses (it's ATA-100) so I just have all of the IDE drivers compiled in (the HD is /dev/hdc). Oh, one weird thing is that /proc/cpuinfo says that the clock speed is 533MHz, when I am hopeful (!) that it's 867. But it's a nice machine, if a little warm. If I could get X working I could switch to it full time. O.