Dell Poweredge 1950, boot problem

You probably should have attached some dmesg.

You may have 8 CPUs because of the Hyper-threading and such. So I
wouldn't necessarily count many CPUs being detected as an indication
of something being wrong...

Cheers,
Constantine.

Right, here is the dmesg where hang did not happen (usually happens though):

Copyright (c) 1992-2006 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 is a registered trademark of The FreeBSD Foundation.
FreeBSD 6.2-RC1 #0: Thu Nov 16 05:12:08 UTC 2006
:/usr/obj/usr/src/sys/SMP
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2995.51-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf64 Stepping = 4
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=0xe4bd<SSE3,RSVD2,MON,DS_CPL,VMX,EST,CNTX-ID,CX16,<b14 AMD Features=0x20100000<NX,LM AMD Features2=0x1<LAHF Cores per package: 2
Logical CPUs per core: 2
real memory = 1073381376 (1023 MB)
avail memory = 1041211392 (992 MB)
ACPI APIC Table: <DELL PE_SC3 FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 2
cpu2 (AP): APIC ID: 4
cpu3 (AP): APIC ID: 6
ioapic0: Changing APIC ID to 8
ioapic1: Changing APIC ID to 9
ioapic1: WARNING: intbase 64 != expected base 24
ioapic0 <Version 2.0 ioapic1 <Version 2.0 kbd1 at kbdmux0
ath_hal: 0.9.17.2 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
acpi0: <DELL PE_SC3 acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz cpu0: <ACPI CPU cpu1: <ACPI CPU cpu2: <ACPI CPU cpu3: <ACPI CPU pcib0: <ACPI Host-PCI bridge pci0: <ACPI PCI bus pcib1: <ACPI PCI-PCI bridge pci5: <ACPI PCI bus pcib2: <ACPI PCI-PCI bridge pci6: <ACPI PCI bus pcib3: <ACPI PCI-PCI bridge pci7: <ACPI PCI bus pcib4: <ACPI PCI-PCI bridge pci9: <ACPI PCI bus pcib5: <PCI-PCI bridge pci10: <PCI bus pcib6: <ACPI PCI-PCI bridge pci1: <ACPI PCI bus pcib7: <ACPI PCI-PCI bridge pci2: <ACPI PCI bus mpt0: <LSILogic SAS/SATA Adapter 0xfddfc000-0xfddfffff,0xfdde0000-0xfddeffff irq 64 at device 8.0 on
pci2
mpt0: [GIANT-LOCKED]
mpt0: MPI Version=1.5.12.0
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
mpt0: mpt_cam_event: 0x12
mpt0: Unhandled Event Notify Frame. Event 0x12 (ACK not required).
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
pcib8: <ACPI PCI-PCI bridge pci11: <ACPI PCI bus bge0: <Broadcom BCM5750 C1, ASIC rev. 0x4201 0xfd8f0000-0xfd8fffff irq 16 at device 0.0 on pci11
miibus0: <MII bus brgphy0: <BCM5750 10/100/1000baseTX PHY brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
bge0: Ethernet address: 00:10:18:19:68:ae
pcib9: <PCI-PCI bridge pci12: <PCI bus pcib10: <ACPI PCI-PCI bridge pci13: <ACPI PCI bus pcib11: <PCI-PCI bridge pci14: <PCI bus pcib12: <ACPI PCI-PCI bridge pci3: <ACPI PCI bus uhci0: <UHCI (generic) USB controller device 29.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: <UHCI (generic) USB controller 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: <UHCI (generic) USB controller device 29.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: <UHCI (generic) USB controller 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: <UHCI (generic) USB controller device 29.2 on pci0
uhci2: [GIANT-LOCKED]
usb2: <UHCI (generic) USB controller 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: <EHCI (generic) USB 2.0 controller irq 21 at device 29.7 on pci0
ehci0: [GIANT-LOCKED]
usb3: EHCI version 1.0
usb3: companion controllers, 2 ports each: usb0 usb1 usb2
usb3: <EHCI (generic) USB 2.0 controller 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
uhub4: vendor 0x04b4 product 0x6560, class 9/0, rev 2.00/0.0b, addr 2
uhub4: multiple transaction translators
uhub4: 4 ports with 4 removable, self powered
ukbd0: Dell Dell USB Keyboard, rev 1.10/3.01, addr 3, iclass 3/1
kbd2 at ukbd0
pcib13: <ACPI PCI-PCI bridge pci15: <ACPI PCI bus pci15: <display, VGA isab0: <PCI-ISA bridge isa0: <ISA bus atapci0: <Intel 63XXESB2 UDMA100 controller 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xfc00-0xfc0f at device 31.1 on
pci0
ata0: <ATA channel 0 ata1: <ATA channel 1 fdc0: <floppy drive controller fdc0: does not respond
device_attach: fdc0 attach returned 6
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
fdc0: <floppy drive controller fdc0: does not respond
device_attach: fdc0 attach returned 6
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
pmtimer0 on isa0
orm0: <ISA Option ROMs atkbdc0: <Keyboard controller (i8042) atkbd0: <AT Keyboard kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
ppc0: parallel port not found.
sc0: <System console sc0: VGA <16 virtual consoles, flags=0x300 sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 8250 or not responding
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA Timecounters tick every 1.000 msec
acd0: CDROM <TEAC CD-ROM CD-224E-N/3.AB ses0 at mpt0 bus 0 target 8 lun 0
ses0: <DP BACKPLANE 1.00 ses0: 300.000MB/s transfers
ses0: SCSI-3 SES Device
SMP: AP CPU #1 Launched!
SMP: AP CPU #2 Launched!
SMP: AP CPU #3 Launched!
da0 at mpt0 bus 0 target 0 lun 0
da0: <FUJITSU MAX3036RC D206 da0: 300.000MB/s transfers, Tagged Queueing Enabled
da0: 34732MB (71132959 512 byte sectors: 255H 63S/T 4427C)
Trying to mount root from ufs:/dev/da0s1a
bge0: link state changed to UP

This time `sysctl hw.ncpu` shows 4. This is because I have disabled
CPU features (hardware prefetch, virtualization, logical processor,
etc). If these features enabled, hw.ncpu is 8. The box is 2 x Xeon
Dell 1950.

This is the successful boot with all CPU features enabled in the BIOS.

Copyright (c) 1992-2006 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 is a registered trademark of The FreeBSD Foundation.
FreeBSD 6.2-RC1 #0: Thu Nov 16 05:12:08 UTC 2006
:/usr/obj/usr/src/sys/SMP
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2995.50-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf64 Stepping = 4
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=0xe4bd<SSE3,RSVD2,MON,DS_CPL,VMX,EST,CNTX-ID,CX16,<b14 AMD Features=0x20100000<NX,LM AMD Features2=0x1<LAHF Cores per package: 2
Logical CPUs per core: 2
real memory = 1073381376 (1023 MB)
avail memory = 1041211392 (992 MB)
ACPI APIC Table: <DELL PE_SC3 FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 2
cpu3 (AP): APIC ID: 3
cpu4 (AP): APIC ID: 4
cpu5 (AP): APIC ID: 5
cpu6 (AP): APIC ID: 6
cpu7 (AP): APIC ID: 7
ioapic0: Changing APIC ID to 8
ioapic1: Changing APIC ID to 9
ioapic1: WARNING: intbase 64 != expected base 24
ioapic0 <Version 2.0 ioapic1 <Version 2.0 kbd1 at kbdmux0
ath_hal: 0.9.17.2 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
acpi0: <DELL PE_SC3 acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz cpu0: <ACPI CPU acpi_perf0: <ACPI CPU Frequency Control cpu1: <ACPI CPU cpu2: <ACPI CPU cpu3: <ACPI CPU cpu4: <ACPI CPU cpu5: <ACPI CPU cpu6: <ACPI CPU cpu7: <ACPI CPU pcib0: <ACPI Host-PCI bridge pci0: <ACPI PCI bus pcib1: <ACPI PCI-PCI bridge pci5: <ACPI PCI bus pcib2: <ACPI PCI-PCI bridge pci6: <ACPI PCI bus pcib3: <ACPI PCI-PCI bridge pci7: <ACPI PCI bus pcib4: <ACPI PCI-PCI bridge pci9: <ACPI PCI bus pcib5: <PCI-PCI bridge pci10: <PCI bus pcib6: <ACPI PCI-PCI bridge pci1: <ACPI PCI bus pcib7: <ACPI PCI-PCI bridge pci2: <ACPI PCI bus mpt0: <LSILogic SAS/SATA Adapter 0xfddfc000-0xfddfffff,0xfdde0000-0xfddeffff irq 64 at device 8.0 on
pci2
mpt0: [GIANT-LOCKED]
mpt0: MPI Version=1.5.12.0
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
mpt0: mpt_cam_event: 0x12
mpt0: Unhandled Event Notify Frame. Event 0x12 (ACK not required).
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
pcib8: <ACPI PCI-PCI bridge pci11: <ACPI PCI bus bge0: <Broadcom BCM5750 C1, ASIC rev. 0x4201 0xfd8f0000-0xfd8fffff irq 16 at device 0.0 on pci11
miibus0: <MII bus brgphy0: <BCM5750 10/100/1000baseTX PHY brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
bge0: Ethernet address: 00:10:18:19:68:ae
pcib9: <PCI-PCI bridge pci12: <PCI bus pcib10: <ACPI PCI-PCI bridge pci13: <ACPI PCI bus pcib11: <PCI-PCI bridge pci14: <PCI bus pcib12: <ACPI PCI-PCI bridge pci3: <ACPI PCI bus uhci0: <UHCI (generic) USB controller device 29.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: <UHCI (generic) USB controller 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: <UHCI (generic) USB controller device 29.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: <UHCI (generic) USB controller 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: <UHCI (generic) USB controller device 29.2 on pci0
uhci2: [GIANT-LOCKED]
usb2: <UHCI (generic) USB controller 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: <EHCI (generic) USB 2.0 controller irq 21 at device 29.7 on pci0
ehci0: [GIANT-LOCKED]
usb3: EHCI version 1.0
usb3: companion controllers, 2 ports each: usb0 usb1 usb2
usb3: <EHCI (generic) USB 2.0 controller 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
uhub4: vendor 0x04b4 product 0x6560, class 9/0, rev 2.00/0.0b, addr 2
uhub4: multiple transaction translators
uhub4: 4 ports with 4 removable, self powered
ukbd0: Dell Dell USB Keyboard, rev 1.10/3.01, addr 3, iclass 3/1
kbd2 at ukbd0
pcib13: <ACPI PCI-PCI bridge pci15: <ACPI PCI bus pci15: <display, VGA isab0: <PCI-ISA bridge isa0: <ISA bus atapci0: <Intel 63XXESB2 UDMA100 controller 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xfc00-0xfc0f at device 31.1 on
pci0
ata0: <ATA channel 0 ata1: <ATA channel 1 fdc0: <floppy drive controller fdc0: does not respond
device_attach: fdc0 attach returned 6
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
fdc0: <floppy drive controller fdc0: does not respond
device_attach: fdc0 attach returned 6
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
pmtimer0 on isa0
orm0: <ISA Option ROMs atkbdc0: <Keyboard controller (i8042) atkbd0: <AT Keyboard kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
ppc0: parallel port not found.
sc0: <System console sc0: VGA <16 virtual consoles, flags=0x300 sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 8250 or not responding
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA Timecounters tick every 1.000 msec
acd0: CDROM <TEAC CD-ROM CD-224E-N/3.AB ses0 at mpt0 bus 0 target 8 lun 0
ses0: <DP BACKPLANE 1.00 ses0: 300.000MB/s transfers
ses0: SCSI-3 SES Device
SMP: AP CPU #3 Launched!
SMP: AP CPU #1 Launched!
SMP: AP CPU #5 Launched!
SMP: AP CPU #2 Launched!
SMP: AP CPU #7 Launched!
SMP: AP CPU #4 Launched!
SMP: AP CPU #6 Launched!
da0 at mpt0 bus 0 target 0 lun 0
da0: <FUJITSU MAX3036RC D206 da0: 300.000MB/s transfers, Tagged Queueing Enabled
da0: 34732MB (71132959 512 byte sectors: 255H 63S/T 4427C)
Trying to mount root from ufs:/dev/da0s1a
bge0: link state changed to UP

Please provide a verbose dmesg with APIC enabled (looks like you aren't
getting interrupts on mpt0) as well as the output from mptable.

--
John Baldwin

I figured out, that the APIC is responsible for that. If APIC is
turned off, then the box boots fine (although it cannot see more that
1 CPU). Here is the dmesg with APIC disabled:

Copyright (c) 1992-2006 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 is a registered trademark of The FreeBSD Foundation.
FreeBSD 6.2-PRERELEASE #1: Tue Dec 19 14:29:09 GMT 2006
-iss.com:/usr/var/tmp/devnull/obj/usr/src/sys/MANAGER
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2995.51-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf64 Stepping = 4
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=0xe4bd<SSE3,RSVD2,MON,DS_CPL,VMX,EST,CNTX-ID,CX16,<b14 AMD Features=0x20100000<NX,LM AMD Features2=0x1<LAHF Cores per package: 2
Logical CPUs per core: 2
real memory = 1073381376 (1023 MB)
avail memory = 999518208 (953 MB)
acpi0: <DELL PE_SC3 acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz cpu0: <ACPI CPU pcib0: <ACPI Host-PCI bridge pci0: <ACPI PCI bus pcib1: <ACPI PCI-PCI bridge pci5: <ACPI PCI bus pcib2: <ACPI PCI-PCI bridge pci6: <ACPI PCI bus pcib3: <ACPI PCI-PCI bridge pci7: <ACPI PCI bus pcib4: <ACPI PCI-PCI bridge pci9: <ACPI PCI bus pcib5: <PCI-PCI bridge pci10: <PCI bus pcib6: <ACPI PCI-PCI bridge pci1: <ACPI PCI bus pcib7: <ACPI PCI-PCI bridge pci2: <ACPI PCI bus mpt0: <LSILogic SAS/SATA Adapter 0xfddfc000-0xfddfffff,0xfdde0000-0xfddeffff irq 6 at device 8.0 on
pci2
mpt0: [GIANT-LOCKED]
mpt0: MPI Version=1.5.12.0
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
mpt0: mpt_cam_event: 0x12
mpt0: Unhandled Event Notify Frame. Event 0x12 (ACK not required).
pcib8: <ACPI PCI-PCI bridge pci11: <ACPI PCI bus bge0: <Broadcom BCM5750 C1, ASIC rev. 0x4201 0xfd8f0000-0xfd8fffff irq 6 at device 0.0 on pci11
miibus0: <MII bus brgphy0: <BCM5750 10/100/1000baseTX PHY brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
bge0: Ethernet address: 00:10:18:19:68:ae
pcib9: <PCI-PCI bridge pci12: <PCI bus pcib10: <ACPI PCI-PCI bridge pci13: <ACPI PCI bus pcib11: <PCI-PCI bridge pci14: <PCI bus pcib12: <ACPI PCI-PCI bridge pci3: <ACPI PCI bus uhci0: <UHCI (generic) USB controller device 29.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: <UHCI (generic) USB controller 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: <UHCI (generic) USB controller device 29.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: <UHCI (generic) USB controller 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: <UHCI (generic) USB controller device 29.2 on pci0
uhci2: [GIANT-LOCKED]
usb2: <UHCI (generic) USB controller 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
pci0: <serial bus, USB pcib13: <ACPI PCI-PCI bridge pci15: <ACPI PCI bus pci15: <display, VGA isab0: <PCI-ISA bridge isa0: <ISA bus atapci0: <Intel 63XXESB2 UDMA100 controller 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xfc00-0xfc0f at device 31.1 on
pci0
ata0: <ATA channel 0 ata1: <ATA channel 1 fdc0: <floppy drive controller fdc0: does not respond
device_attach: fdc0 attach returned 6
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
fdc0: <floppy drive controller fdc0: does not respond
device_attach: fdc0 attach returned 6
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 0 not in bitmap of probed irqs 0
sio0: port may not be enabled
orm0: <ISA Option ROMs atkbdc0: <Keyboard controller (i8042) atkbd0: <AT Keyboard kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
vga0: <Generic ISA VGA sc0: <System console sc0: VGA <16 virtual consoles, flags=0x300 sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 8250 or not responding
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
uhub3: vendor 0x04b4 product 0x6560, class 9/0, rev 2.00/0.0b, addr 2
uhub3: 4 ports with 4 removable, self powered
ukbd0: Dell Dell USB Keyboard, rev 1.10/3.01, addr 3, iclass 3/1
kbd1 at ukbd0
Timecounter "TSC" frequency 2995514748 Hz quality 800
Timecounters tick every 1.000 msec
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
acd0: CDROM <TEAC CD-ROM CD-224E-N/3.AB ses0 at mpt0 bus 0 target 8 lun 0
ses0: <DP BACKPLANE 1.00 ses0: 300.000MB/s transfers
ses0: SCSI-3 SES Device
da0 at mpt0 bus 0 target 0 lun 0
da0: <FUJITSU MAX3036RC D206 da0: 300.000MB/s transfers, Tagged Queueing Enabled
da0: 34732MB (71132959 512 byte sectors: 255H 63S/T 4427C)
Trying to mount root from ufs:/dev/md0
bge0: link state changed to UP

However, with APIC turned on, the boot stops here:

Timecounters tick every 1.000 msec
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
acd0: CDROM <TEAC CD-ROM CD-224E-N/3.AB < hang ---
It looks like it stopped on ses0 detection. The hang is nasty: event
the powercycle button didn't work, I had to unplug the power led and
plug it again. Any ideas ? Please advise.

sergey

Are you booting amd64 on it? default kernel?

-Simon