Framebuffer on nVidia NV18GL?

I have a new machine with an nVidia NV18GL [Quadro FX 550] card in it. I 
have compiled both vesafb-tng and nvidia framebuffer support in to the 
kernel and tried various things without success.

I find the whole framebuffer device thing a bit weird in practice, a bit 
hit-and-miss, sometimes I get it and sometimes I don't.

I have tried various lines in my grub menu.lst such as

kernel (hd0,2)/boot/kernel-2.6.17-gentoo-r8 root=/dev/sda3 
video=vesafb:mtrr:3,ywrap,1024x768-32@85

which was taken from the usually excellent gentoo handbook and

kernel (hd0,2)/boot/kernel-2.6.17-gentoo-r8 root=/dev/sda3 
video=nvidiafb vga=0x318

but neither seem to work. I just get an error immediately on boot saying 
the mode wasn't recognised or something and it gives me a list of modes 
to choose from, all of which end up in a normal looking terminal without 
the nice framebuffer screen. I am a little confused by the lack of clear 
documentation on this.

Could somebody point me in the right direction?

-- 
Hari Sekhon


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