gentoo-sources won't boot

[seto]

hi there
i'm having this annoying problem since i installed gentoo.
at first, i wanted to try out the gentoo kernel (emerge gentoo-sources), but after compiling/installing the system would freeze just after printing
Loading Linux... Uncompressing Linux...
and could not determine whether this was caused by a misconfiguration, a bug in the sourcecode, a bug in gcc or a hardware problem
now i'm using vanilla sources 2.4.20, but i would really like to give the cool additional features a try.
my only idea what could be wrong is the framebuffer. i still have to investigate this, but afaik radeonfb is set to "Module" and VESA should not set a default mode if you don't instruct it to do so (or am i wrong?)
if you want me to post my kernel config, please say so, but i rather do not because of the size.

my system:
Athlon XP2100+
256MB DDR333
VIA KT400 (ASUS A7V8X)

btw: i chose athlon xp gcc>3.1 as cpu type in the kernel setup (gcc version is 3.2.3)

[stustill]

seto:

I would try recompiling your kernel without radeonfb, just the normal VESA. Also, you will need to edit /boot/grub/grub.conf, so that it knows what resolution and colour depth to use. Here is the appropriate section of grub as defined in my grub.conf: