i386 kernel just stops booting

Hello everyone,

I'm trying to get CURRENT installed on i386 desktop machine, but kernel
stops booting after some time [1]. No error, even with verbose logging.
At that point keyboard does not respond so manual reset is the only
option. Nothing is logged into dmesg or messages.

Right now RELENG_6 build yesterday is running happily on this machine.

I tried custom kernel with disabled options: SMP, APIC (on/off), sound
modules, bktr module - no go.

7.0-CURRENT snapshot [2] from 200702 - the same.

Disabling ACPI at boot time (via menu) doesn't help either.

I'm not sure what to do next. Is there any way to increase verbosity? Or
another way to check what and why is failing? Any pointers on what to do
appreciated.

Hardware: i386, Athlon XP 2000+, ASRock K7NF2-RAID (NForce2), Audigy 2,
Pixelview tv card (bktr). Dmesg, kernels, pciconf, etc can be found here:
	http://www.orchid.homeunix.org/freebsd/config/persephone/

Thanks,

Karol


[1]
excerpt from verbose dmesg log on RELENG_6, but this fragment looks the
same on CURRENT:
[...]
ioapic0: Changing polarity for pin 16 to high
pcib1: slot 8 INTA routed to irq 16 via \\_SB_.LNKA
found-> vendor=0x1102, dev=0x7003, revid=0x03
     bus=2, slot=8, func=1
     class=09-80-00, hdrtype=0x00, mfdev=1
     cmdreg=0x0105, statreg=0x0290, cachelnsz=0 (dwords)
     lattimer=0x20 (960 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
     powerspec 2  supports D0 D1 D2 D3  current D0
     map[10]: type 4, range 32, base 0000dc00, size  3, enabled
pcib1: requested I/O range 0xdc00-0xdc07: in range
found-> vendor=0x1102, dev=0x4001, revid=0x00
     bus=2, slot=8, func=2
     class=0c-00-10, hdrtype=0x00, mfdev=1
     cmdreg=0x0116, statreg=0x0210, cachelnsz=64 (dwords)
     lattimer=0x20 (960 ns), mingnt=0x02 (500 ns), maxlat=0x04 (1000 ns)
     intpin=b, irq=5
     powerspec 2  supports D0 D1 D2 D3  current D0
     map[10]: type 1, range 32, base ff5ff800, size 11, enabled
pcib1: requested memory range 0xff5ff800-0xff5fffff: good
     map[14]: type 1, range 32, base ff5f8000, size 14, enabled
pcib1: requested memory range 0xff5f8000-0xff5fbfff: good
pcib1: matched entry for 2.8.INTB (src \\_SB_.LNKB:0)
pci_link1: Picked IRQ 17 with weight 0
ioapic0: Changing polarity for pin 17 to high
pcib1: slot 8 INTB routed to irq 17 via \\_SB_.LNKB
[ here it stops responding ]


[2]
ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/200702/7.0-CURRENT-200702-i386-bootonly.iso

-- 
Karol Kwiatkowski   <karol.kwiat at gmail dot com>
OpenPGP 0x06E09309