kernel-2.2.17pre11 boots without display on G4

["Bjørn Ola Smievoll" <b.o.smievoll@usit.uio.no>]

Just upgraded my kernel to 2.2.17pre11 (from 2.2.17pre5) and my
sawtooth now longer gets my console going.  I can ssh inn from
another machine after it has booted, but the display just shows the
initial screen 'Welcome to Linux, kernel 2.2.17 [...] booting...'

My dmesg contains this line:

Jul 18 20:21:38 mu kernel: atyfb: Unknown mach64 0x0001

Did someone forget to include aty128fb when they compiled the kernel,
or can I do some tricks with yaboot.conf (or something else) to enable
the aty128fb driver?

Anyways; how do I downgrade to 2.2.17pre5 again?  (I'm new to debian
and dselect).

On a more general note I can say that I'm currently running the G4 as
my primary workstation, and it's working quite well.  Never got more
than 7 days uptime due to problems with nfs[1] (guess I should report
that somewhere to), but I'm satisfied none the less.  No more wintel
(the first bit has been gone for years :-).


Thanks,

(bo)

[1] Jul 17 16:46:04 mu kernel: nfs: task 64808 can't get a request slot