By any chance, did you call your kernel something else than "netbsd"?

For LKMs to work, the kernel needs to be called "netbsd". I was bitten
by this too when I tried a -current kernel on a 1.5 machine.

 Aymeric

Masao Uebayashi <uebayasi@soum.co.jp> writes:

> Hello,
> 
> I built a 1.5.2 kernel whose config is identical with that I have used
> for 1.5.2 with agpgart LKM for about half of year. The kernel looks to
> be make'd successfully, but it fails to boot while loading agpgart.o
> LKM and runs into kernel debugger.
> 
> Is there anyone who uses agpgart LKM on NetBSD/i386 1.5.2? Or anyone
> seeing the same problem?
> 
> Regards,
> Masao