[syslinux] Problem: booting stops during "Loading /bzimage...."

[Chris Osicki]

Hi 

I'm having problems PXE-booting a Sun-Blade 100x.
As the subject line says, booting stops during "Loading /bzimage...."

Broadcom UNDI PXE-2.1 (build 082) v6.2.11
Copyright (C) 2000-2003 Broadcom Corporation
Copyright (C) 1997-2000 Intel Corporation
All rights reserved.

CLIENT MAC ADDR: 00 03 BA 44 4F F4  GUID: 00000000 0000 0000 0000 000000000000
CLIENT IP: 10.148.11.21  MASK: 255.255.255.0  DHCP IP: 10.148.11.106

PXELINUX 2.06 0x3f46af85  Copyright (C) 1994-2003 H. Peter Anvin
UNDI data segment at:   00095140
UNDI data segment size: 4C50
UNDI code segment at:   00099D90
UNDI code segment size: 4804
PXE entry point found (we hope) at 99D9:00D6
My IP address seems to be 0A940B15 10.148.11.21
ip=10.148.11.21:10.148.11.106:0.0.0.0:255.255.255.0
TFTP prefix: /
Trying to load: pxelinux.cfg/01-00-03-ba-44-4f-f4
Trying to load: pxelinux.cfg/0A940B15
Hello from Syslinux
Loading /bzImage......................

The hardware I use is:
----
 CPU Type        : mobile AMD Athlon(tm) XP-M processor
 CPU Speed       : 1800+                               
                                                       
 System Memory   : 640 KB                              
 Extended Memory : 2095104 KB                          
 Shadow Ram      : 384 KB                              
 Cache Ram       : 256 KB                              
----

PXELINUX 2.06 0x3f46af8 was compiled on an AMD Athlon (not mobile), kernel
2.6.6, bzImage compiled on this system as well.


The 0A940B15 file:

DEFAULT /bzImage
APPEND ip=10.148.11.21 root=/dev/nfs nfsroot=10.148.11.170:/tftpboot/10.148.11.21 console=ttyS0,9600
SAY Hello from Syslinux


I'm using tftp-hpa-0.34 (on Gentoo Linux), I tried with tftpd from
iputils with the same result.

Am I missing something obvious?
Is there any way to debug this problem?

I would be thankful for any hints.

Regards,
Chris Osicki