amd64/111992: BTX failed - HP Laptop dv2315nr

Joe t. joe4usmc at
Sun Apr 22 02:50:05 UTC 2007

>Number:         111992
>Category:       amd64
>Synopsis:       BTX failed - HP Laptop dv2315nr
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-amd64
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Apr 22 02:50:04 GMT 2007
>Originator:     Joe t.
>Release:        6.2-RELEASE
Installation CD (disc 1) of FreeBSD v6.2-RELEASE fails to successfully boot.
I was unable to find other documentation regarding this laptop on mailing lists or google (regarding FreeBSD compatibility). 

Laptop: HP dv2000-series. Specific model: dv2315nr.

The disc's (6.2-RELEASE-amd64-disc1.iso) md5 sum matches that published on the ftp server. CD verified after burn.

The boot loader appears to initiate properly, and then loops endlessly. 
It shows these few lines of text:

CD Loader 1.2

Building the boot loader arguments
Looking up /BOOT/LOADER... Found
Relocating the loader and the BTX
Starting the BTX loader

BTX loader 1.00   BTX version is 1.01
Consoles: internal video/keyboard
BIOS CD is cd0
BIOS drive C: is disk0
BIOS 631kB/915520kB available memory

Freebsd/i386 bootstrap loader, Revision 1.1
(root at, Fri Jan 12 06:34:52 UTC 2007)

Loading /boot/defaults/loader.conf

This is followed by an endless loop of text which scrolls too fast on the screen to read. I believe it is alternating two lines of text.

cst = 00000000   abc = 00000000  xyz = 00000000
BTX = 00000000   xyz = 00000000  abc = 00000000

The zeros are alpha-numeric sequences which I can't read. 

This laptop's BIOS, supplied by Phoenix Technologies, has practically no configuration options except for changing the date/time, boot devices and boot order. This Hewlett-Packard laptop is "Designed for Windows Vista." It uses an nVidia chipset with the new(er) pci-express bus. 

This situation occurs 100% of the time regardless of power source (battery or wall charger).
Attempt to boot from installation CD.


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