The problem appears on openbsd_3_7 and openbsd_3_8_base.
The mainboard is a foxconn: 915P7AC-8KRS
Here is the dmesg output:
OpenBSD 3.8 (GENERIC) #0: Wed Sep 28 14:50:49 CEST 2005
[EMAIL PROTECTED]:/home/cvs/OPENBSD_3_8_BASE/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Pentium(R) 4 CPU 3.00GHz ("GenuineIntel" 686-class) 3 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,
CFLUSH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,CNXT-ID
real mem = 1073324032 (1048168K)
avail mem = 972779520 (949980K)
using 4278 buffers containing 53768192 bytes (52508K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(55) BIOS, date 03/31/05, BIOS32 rev. 0 @
0xfb2f0
pcibios0 at bios0: rev 3.0 @ 0xf0000/0xdeb4
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdd70/272 (15 entries)
pcibios0: bad IRQ table checksum
pcibios0: PCI BIOS has 18 Interrupt Routing table entries
pcibios0: PCI Exclusive IRQs: 5 9 10 11
pcibios0: no compatible PCI ICU found
pcibios0: Warning, unable to fix up PCI interrupt routing
pcibios0: PCI bus #2 is the last bus
bios0: ROM list: 0xc0000/0xd000
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 915G/P/GV Host" rev 0x04
ppb0 at pci0 dev 1 function 0 "Intel 915G/P/GV PCIE" rev 0x04
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Radeon X300" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
"ATI Radeon X300 Sec" rev 0x00 at pci1 dev 0 function 1 not configured
uhci0 at pci0 dev 29 function 0 "Intel 82801FB USB" rev 0x03: irq 10
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 29 function 1 "Intel 82801FB USB" rev 0x03: irq 11
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2 at pci0 dev 29 function 2 "Intel 82801FB USB" rev 0x03: irq 9
usb2 at uhci2: USB revision 1.0
uhub2 at usb2
uhub2: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhci3 at pci0 dev 29 function 3 "Intel 82801FB USB" rev 0x03: irq 11
usb3 at uhci3: USB revision 1.0
uhub3 at usb3
uhub3: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
ehci0 at pci0 dev 29 function 7 "Intel 82801FB USB" rev 0x03: irq 10
usb4 at ehci0: USB revision 2.0
uhub4 at usb4
uhub4: Intel EHCI root hub, rev 2.00/1.00, addr 1
uhub4: 8 ports with 8 removable, self powered
ppb1 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0xd3
pci2 at ppb1 bus 2
bge0 at pci2 dev 1 function 0 "Broadcom BCM5788" rev 0x03, BCM5705 A3
(0x3003): irq 5 address 00:01:6c:b0:92:30
brgphy0 at bge0 phy 1: BCM5705 10/100/1000baseT PHY, rev. 2
pciide0 at pci2 dev 5 function 0 "ITExpress IT8212F" rev 0x13: DMA,
channel 0 wired to native-PCI, channel 1 wired to native-PCI
pciide0: using irq 10 for native-PCI interrupt
ichpcib0 at pci0 dev 31 function 0 "Intel 82801FB LPC" rev 0x03: PM
disabled
pciide1 at pci0 dev 31 function 1 "Intel 82801FB IDE" rev 0x03: DMA,
channel 0 configured to compatibility, channel 1 configured to
compatibility
atapiscsi0 at pciide1 channel 0 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <HL-DT-ST, DVD-ROM GDR8163B, 0L23> SCSI0
5/cdrom removable
cd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 2
pciide1: channel 1 disabled (no drives)
pciide2 at pci0 dev 31 function 2 "Intel 82801FB SATA" rev 0x03: DMA,
channel 0 configured to native-PCI, channel 1 configured to native-PCI
pciide2: using irq 11 for native-PCI interrupt
wd0 at pciide2 channel 0 drive 0: <Maxtor 6L200M0>
wd0: 16-sector PIO, LBA48, 194481MB, 398297088 sectors
wd0(pciide2:0:0): using PIO mode 4, Ultra-DMA mode 5
"Intel 82801FB SMBus" rev 0x03 at pci0 dev 31 function 3 not configured
isa0 at ichpcib0
isadma0 at isa0
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
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
it0 at isa0 port 0x290/8: IT87
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask ef45 netmask ef65 ttymask ffe7
pctr: user-level cycle counter enabled
dkcsum: wd0 matches BIOS drive 0x80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302
