Description of problem:
When i pxe boot a Tyan S2912 to do a s/w install the kernel and initrd load 
fine, and start executing. It then hangs at the point where the screen blanks 
just before the first Blue screen appears.

I cant see any errors, and the 2912 responds to ctl-alt-del to shutdown and 
reboot.

I can boot a Tyan S2891 OK form the same boot server



Version-Release number of selected component (if applicable):
Rhel5.1

How reproducible:
Every time

Steps to Reproduce:
1.Boot 
2.
3.
  
Actual results:


Expected results:


Additional info: