6.0-BETA2 hangs

Hi,

Anyone else having problems with 6.0-BETA2 hanging? I have a Dell  
Precision 450 workstation which was running -BETA1 from 30th July  
fine, but hangs on boot with today's kernel.

Symptoms are that it appears to hang on boot when starting sshd (or,  
if sshd is disabled, when starting X). Keyboard and mouse are  
unresponsive. It responds to ping but not to other network traffic.  
No error logged on the console. Boots to single user just fine, or  
today's world with a -BETA1 kernel works fine.

Any suggestions on how to debug this? I've attached a dmesg from - 
BETA2, in case it helps; there are minimal differences from -BETA1:

4c4
< FreeBSD 6.0-BETA1 #0: Sat Jul 30 12:21:58 BST 2005
---
 > FreeBSD 6.0-BETA2 #0: Mon Aug  8 12:20:49 BST 2005
147d146
< ATA PseudoRAID loaded

plus the -BETA1 system logs:

error: [drm:pid551:radeon_cp_init] *ERROR* radeon_cp_init called  
without lock held
error: [drm:pid551:drm_unlock] *ERROR* Process 551 using kernel  
context 0

when starting X (this has been happening for months, and hasn't  
seemed to cause any problems previously).

Thanks for any suggestions...
Colin




Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 6.0-BETA2 #0: Mon Aug  8 12:20:49 BST 2005
root_at_curtis.dcs.gla.ac.uk:/usr/obj/usr/src/sys/CURTIS
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 3.06GHz (3056.50-MHz 686-class CPU)
Origin = "GenuineIntel"  Id = 0xf27  Stepping = 7
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE 
,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=0x4400<CNTX-ID,<b14>>
Hyperthreading: 2 logical CPUs
real memory  = 536301568 (511 MB)
avail memory = 515305472 (491 MB)
ACPI APIC Table: <DELL   WS 450 >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
cpu0 (BSP): APIC ID:  0
cpu1 (AP): APIC ID:  1
ioapic0: Changing APIC ID to 8
ioapic1: Changing APIC ID to 9
ioapic2: Changing APIC ID to 10
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 24-47 on motherboard
ioapic2 <Version 2.0> irqs 48-71 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <DELL WS 450 > on motherboard
acpi0: Power Button (fixed)
pci_link0: <ACPI PCI Link LNKA> irq 11 on acpi0
pci_link1: <ACPI PCI Link LNKB> irq 11 on acpi0
pci_link2: <ACPI PCI Link LNKC> irq 9 on acpi0
pci_link3: <ACPI PCI Link LNKD> irq 10 on acpi0
pci_link4: <ACPI PCI Link LNKE> on acpi0
pci_link5: <ACPI PCI Link LNKF> on acpi0
pci_link6: <ACPI PCI Link LNKG> irq 11 on acpi0
pci_link7: <ACPI PCI Link LNKH> irq 11 on acpi0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
p4tcc0: <CPU Frequency Thermal Control> on cpu0
cpu1: <ACPI CPU> on acpi0
p4tcc1: <CPU Frequency Thermal Control> on cpu1
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <PCI-PCI bridge> mem 0xe0000000-0xe7ffffff at device 1.0 on pci0
pci1: <PCI bus> on pcib1
drm0: <ATI Radeon QY RV100 7000/VE> port 0xec00-0xecff mem  
0xf0000000-0xf7ffffff,0xff8f0000-0xff8fffff irq 16 at device 0.0 on pci1
info: [drm] Initialized radeon 1.16.0 20050311 on minor 0
pcib2: <ACPI PCI-PCI bridge> at device 2.0 on pci0
pci2: <ACPI PCI bus> on pcib2
pci2: <base peripheral, interrupt controller> at device 28.0 (no  
driver attached)
pcib3: <ACPI PCI-PCI bridge> at device 29.0 on pci2
pci3: <ACPI PCI bus> on pcib3
em0: <Intel(R) PRO/1000 Network Connection, Version - 2.1.7> port  
0xdcc0-0xdcff mem 0xff6e0000-0xff6fffff irq 24 at device 14.0 on pci3
em0: Ethernet address: 00:08:74:4f:aa:7c
em0:  Speed:N/A  Duplex:N/A
pci2: <base peripheral, interrupt controller> at device 30.0 (no  
driver attached)
pcib4: <ACPI PCI-PCI bridge> at device 31.0 on pci2
pci4: <ACPI PCI bus> on pcib4
uhci0: <Intel 82801DB (ICH4) USB controller USB-A> port 0xff80-0xff9f  
irq 16 at device 29.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: <Intel 82801DB (ICH4) USB controller USB-A> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: <Intel 82801DB (ICH4) USB controller USB-B> port 0xff60-0xff7f  
irq 19 at device 29.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: <Intel 82801DB (ICH4) USB controller USB-B> on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2: <Intel 82801DB (ICH4) USB controller USB-C> port 0xff40-0xff5f  
irq 18 at device 29.2 on pci0
uhci2: [GIANT-LOCKED]
usb2: <Intel 82801DB (ICH4) USB controller USB-C> on uhci2
usb2: USB revision 1.0
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
ehci0: <Intel 82801DB/DBL/DBM (ICH4) USB 2.0 controller> mem  
0xffa20800-0xffa20bff irq 23 at device 29.7 on pci0
ehci0: [GIANT-LOCKED]
usb3: EHCI version 1.0
usb3: companion controllers, 2 ports each: usb0 usb1 usb2
usb3: <Intel 82801DB/DBL/DBM (ICH4) USB 2.0 controller> on ehci0
usb3: USB revision 2.0
uhub3: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub3: 6 ports with 6 removable, self powered
pcib5: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci5: <ACPI PCI bus> on pcib5
fwohci0: <Texas Instruments TSB43AB23> mem 0xff2ff800-0xff2fffff, 
0xff2f8000-0xff2fbfff irq 22 at device 14.0 on pci5
fwohci0: OHCI version 1.10 (ROM=1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:30:95:00:a0:04:14:3e
fwohci0: Phy 1394a available S400, 3 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
fwe0: <Ethernet over FireWire> on firewire0
if_fwe0: Fake Ethernet address: 02:30:95:04:14:3e
fwe0: Ethernet address: 02:30:95:04:14:3e
fwe0: if_start running deferred for Giant
sbp0: <SBP-2/SCSI over FireWire> on firewire0
fwohci0: Initiate bus reset
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH4 UDMA100 controller> port  
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 31.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
ichsmb0: <Intel 82801DC (ICH4) SMBus controller> port 0xcc80-0xcc9f  
irq 17 at device 31.3 on pci0
ichsmb0: [GIANT-LOCKED]
smbus0: <System Management Bus> on ichsmb0
smb0: <SMBus generic I/O> on smbus0
pcm0: <Intel ICH4 (82801DB)> port 0xc800-0xc8ff,0xcc40-0xcc7f mem  
0xffa20400-0xffa205ff,0xffa20000-0xffa200ff irq 17 at device 31.5 on  
pci0
pcm0: [GIANT-LOCKED]
pcm0: <Analog Devices AD1981B AC97 Codec>
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on  
acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model Generic PS/2 mouse, device ID 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10  
on acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
ppc0: <ECP parallel printer port> port 0x378-0x37f,0x778-0x77f irq 7  
on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xcafff,0xcb000-0xcbfff, 
0xe0000-0xe17ff,0xe1800-0xe3fff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on  
isa0
Timecounters tick every 1.000 msec
ad0: 38166MB <IC35L040AVVA07 0 VA2OA51A> at ata0-master UDMA100
acd0: CDROM <Lite-On LTN486S 48x Max/YDS4> at ata1-master UDMA33
SMP: AP CPU #1 Launched!
Trying to mount root from ufs:/dev/ad0s3a