Update! The machine boots fine with 2GB and 4GB RAM.
Output from loading bsd from harddrive with 8GB RAM: - snip - uhci5: host controller process error uhci5: host controller halted ehci0: unrecoverable error, controller halted echi0: blocking intrs 0x10 uhci2: host controller process error uhci2: host controller halted uhci1: host controller process error uhci1: host controller halted uhci0: host controller process error uhci0: host controller halted ehci1: unrecoverable error, controller halted echi1: blocking intrs 0x10 uhci3: host controller process error uhci3: host controller halted uhci4: host controller process error uhci4: host controller halted mtrr: Pentium Pro MTRR support uhci_freex: xfer=0xffff8000001a5000 not busy, 0x4f4e5155 uhci_freex: xfer=0xffff80000019b200 not busy, 0x4f4e5155 uhci_freex: xfer=0xffff8000001a2800 not busy, 0x4f4e5155 uhci_freex: xfer=0xffff8000001a3e00 not busy, 0x4f4e5155 uhci_freex: xfer=0xffff8000001a3400 not busy, 0x4f4e5155 uhci_freex: xfer=0xffff8000001a4a00 not busy, 0x4f4e5155 Full dmesg with 2GB RAM: OpenBSD 4.4-beta (GENERIC) #1528: Wed Jul 16 10:01:03 MDT 2008 [EMAIL PROTECTED]:/usr/src/sys/arch/amd64/compile/GENERIC real mem = 2133999616 (2035MB) avail mem = 2072133632 (1976MB) mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.5 @ 0xf0720 (70 entries) bios0: vendor American Megatrends Inc. version "0703" date 06/12/2008 bios0: ASUSTeK Computer INC. P5Q-PRO acpi0 at bios0: rev 0 acpi0: tables DSDT FACP APIC MCFG OEMB HPET OSFR SSDT acpi0: wakeup devices P0P2(S4) P0P3(S4) P0P1(S4) UAR1(S4) PS2K(S4) PS2M(S4) EUSB(S4) USBE(S4) P0P5(S4) P0P6(S4) P0P7(S4) P0P8(S4) P0P9(S4) GBEC(S4) USB0(S4) USB1(S4) USB2(S4) USB3(S4) USB4(S4) USB5(S4) USB6(S4) P0P4(S4) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 14318179 Hz acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 1 (P0P2) acpiprt2 at acpi0: bus -1 (P0P3) acpiprt3 at acpi0: bus 5 (P0P1) acpiprt4 at acpi0: bus -1 (P0P5) acpiprt5 at acpi0: bus -1 (P0P6) acpiprt6 at acpi0: bus -1 (P0P7) acpiprt7 at acpi0: bus 3 (P0P8) acpiprt8 at acpi0: bus 2 (P0P9) acpiprt9 at acpi0: bus 4 (P0P4) acpicpu0 at acpi0: PSS acpibtn0 at acpi0: PWRB cpu0 at mainbus0: (uniprocessor) cpu0: Intel(R) Core(TM)2 Quad CPU Q9300 @ 2.50GHz, 2500.04 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,SMX,EST,TM2,CX16,xTPR,NXE,LONG cpu0: 3MB 64b/line 8-way L2 cache cpu0: Enhanced SpeedStep 2500 MHz: speeds: 2499, 2003 MHz pci0 at mainbus0 bus 0: configuration mode 1 pchb0 at pci0 dev 0 function 0 vendor "Intel", unknown product 0x2e20 rev 0x02 ppb0 at pci0 dev 1 function 0 vendor "Intel", unknown product 0x2e21 rev 0x02: irq 10 pci1 at ppb0 bus 1 vga1 at pci1 dev 0 function 0 vendor "ATI", unknown product 0x95c5 rev 0x00 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) azalia0 at pci1 dev 0 function 1 vendor "ATI", unknown product 0xaa28 rev 0x00: irq 11 azalia0: /usr/src/sys/dev/pci/azalia.c/1348 invalid PCM format: 0x00000000 azalia0: No codecs found uhci0 at pci0 dev 26 function 0 vendor "Intel", unknown product 0x3a37 rev 0x00: irq 10 uhci1 at pci0 dev 26 function 1 vendor "Intel", unknown product 0x3a38 rev 0x00: irq 14 uhci2 at pci0 dev 26 function 2 vendor "Intel", unknown product 0x3a39 rev 0x00: irq 15 ehci0 at pci0 dev 26 function 7 vendor "Intel", unknown product 0x3a3c rev 0x00: irq 15 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 azalia1 at pci0 dev 27 function 0 vendor "Intel", unknown product 0x3a3e rev 0x00: irq 3 azalia1: codec[s]: Realtek/0x0888 audio0 at azalia1 ppb1 at pci0 dev 28 function 0 vendor "Intel", unknown product 0x3a40 rev 0x00: irq 11 pci2 at ppb1 bus 4 ppb2 at pci0 dev 28 function 4 vendor "Intel", unknown product 0x3a48 rev 0x00: irq 11 pci3 at ppb2 bus 3 pciide0 at pci3 dev 0 function 0 "Marvell 88SE6121 SATA" rev 0xb2: DMA (unsupported), channel 0 configured to native-PCI, channel 1 configured to native-PCI pciide0: using irq 10 for native-PCI interrupt pciide0: channel 0 ignored (not responding; disabled or no drives?) pciide0: channel 1 ignored (not responding; disabled or no drives?) ppb3 at pci0 dev 28 function 5 vendor "Intel", unknown product 0x3a4a rev 0x00: irq 10 pci4 at ppb3 bus 2 vendor "Attansic Technology", unknown product 0x1026 (class network subclass ethernet, rev 0xb0) at pci4 dev 0 function 0 not configured uhci3 at pci0 dev 29 function 0 vendor "Intel", unknown product 0x3a34 rev 0x00: irq 7 uhci4 at pci0 dev 29 function 1 vendor "Intel", unknown product 0x3a35 rev 0x00: irq 5 uhci5 at pci0 dev 29 function 2 vendor "Intel", unknown product 0x3a36 rev 0x00: irq 15 ehci1 at pci0 dev 29 function 7 vendor "Intel", unknown product 0x3a3a rev 0x00: irq 7 usb1 at ehci1: USB revision 2.0 uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ppb4 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0x90 pci5 at ppb4 bus 5 ral0 at pci5 dev 0 function 0 "Ralink RT2560" rev 0x01: irq 10, address 00:08:a1:85:37:03 ral0: MAC/BBP RT2560 (rev 0x04), RF RT2525 emu0 at pci5 dev 1 function 0 "Creative Labs SoundBlaster Audigy" rev 0x03: irq 11 ac97: codec id 0x54524123 (TriTech Microelectronics TR28602) audio1 at emu0 "Creative Labs SoundBlaster Audigy Digital" rev 0x03 at pci5 dev 1 function 1 not configured "Creative Labs Firewire" rev 0x00 at pci5 dev 1 function 2 not configured "AT&T/Lucent FW322 1394" rev 0x70 at pci5 dev 3 function 0 not configured pcib0 at pci0 dev 31 function 0 vendor "Intel", unknown product 0x3a16 rev 0x00 ahci0 at pci0 dev 31 function 2 vendor "Intel", unknown product 0x3a22 rev 0x00: irq 5, AHCI 1.2 scsibus0 at ahci0: 32 targets, initiator 32 sd0 at scsibus0 targ 4 lun 0: <ATA, ST3160023AS, 3.05> SCSI3 0/direct fixed sd0: 152626MB, 19457 cyl, 255 head, 63 sec, 512 bytes/sec, 312579695 sec total vendor "Intel", unknown product 0x3a30 (class serial bus subclass SMBus, rev 0x00) at pci0 dev 31 function 3 not configured usb2 at uhci0: USB revision 1.0 uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb3 at uhci1: USB revision 1.0 uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb4 at uhci2: USB revision 1.0 uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb5 at uhci3: USB revision 1.0 uhub5 at usb5 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb6 at uhci4: USB revision 1.0 uhub6 at usb6 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb7 at uhci5: USB revision 1.0 uhub7 at usb7 "Intel UHCI root hub" rev 1.00/1.00 addr 1 isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 midi0 at pcppi0: <PC speaker> spkr0 at pcppi0 lm0 at isa0 port 0x290/8: W83627DHG fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 mtrr: Pentium Pro MTRR support uhidev0 at uhub5 port 1 configuration 1 interface 0 "Logitech Optical USB Mouse" rev 2.00/3.40 addr 2 uhidev0: iclass 3/1 ums0 at uhidev0: 3 buttons, Z dir wsmouse0 at ums0 mux 0 uhidev1 at uhub5 port 2 configuration 1 interface 0 "NOVATEK USB Keyboard" rev 1.10/1.12 addr 3 uhidev1: iclass 3/1 ukbd0 at uhidev1: 8 modifier keys, 6 key codes wskbd1 at ukbd0 mux 1 wskbd1: connecting to wsdisplay0 uhidev2 at uhub5 port 2 configuration 1 interface 1 "NOVATEK USB Keyboard" rev 1.10/1.12 addr 3 uhidev2: iclass 3/0, 4 report ids uhid0 at uhidev2 reportid 2: input=1, output=0, feature=0 uhid1 at uhidev2 reportid 3: input=3, output=0, feature=0 uhid2 at uhidev2 reportid 4: input=2, output=0, feature=0 softraid0 at root root on sd0a swap on sd0b dump on sd0b
