After getting almost there (thanks JC Roberts) on Intel 845G, I tried the
other computer, an old nforce2-based machine.  It works on 4.3-stable, and
on 4.5beta Xorg -configure says

No devices to configure.  Configuration failed.

although nv is in the driver list.  So this is a regression; used to work,
now doesn't.

Evidently I'm clueless about Xorg and/or entirely without luck this week. 
All I need is vga-like operation, nothing fancy.  Is there anyway to fake
it out as a VESA or something?

--John

Here are the pcidump outputs (first device only)



# cat pcidump-v_min_45beta.lis
Domain /dev/pci0:
 0:0:0: NVIDIA nForce2 PCI
        0x0000: Vendor ID: 10de Product ID: 01e0
        0x0004: Command: 0006 Status ID: 00b0
        0x0008: Class: 06 Subclass: 00 Interface: 00 Revision: a2
        0x000c: BIST: 00 Header Type: 80 Latency Timer: 00 Cache Line
Size: 00
        0x0010: BAR mem prefetchable 32bit addr: 0xd0000000
        0x0014: BAR empty (00000000)
        0x0018: BAR empty (00000000)
        0x001c: BAR empty (00000000)
        0x0020: BAR empty (00000000)
        0x0024: BAR empty (00000000)
        0x0028: Cardbus CIS: 00000000
        0x002c: Subsystem Vendor ID: 0000 Product ID: 0000
        0x0030: Expansion ROM Base Address: 00000000
        0x0038: 00000000
        0x003c: Interrupt Pin: 00 Line: 00 Min Gnt: 00 Max Lat: 00
        0x0040: Capability 0x02: AGP
        0x0060: Capability 0x08: AMD LDT/HT
(snip)

and

# cat pcidump-xx_min_45beta.lis
Domain /dev/pci0:
 0:0:0: NVIDIA nForce2 PCI
        0x0000: 01e010de 00b00006 060000a2 00800000
        0x0010: d0000008 00000000 00000000 00000000
        0x0020: 00000000 00000000 00000000 00000000
        0x0030: 00000000 00000040 00000000 00000000
        0x0040: 00206002 1f000217 00000001 ffffffff
        0x0050: ffffffff ffffffff ffffffff ffffffff
        0x0060: 20010008 80880020 00000010 1f0fff01
        0x0070: ffffffff ffffffff ffffffff ffffffff
        0x0080: 0000010e 3dffffff 00000000 01408001
        0x0090: 01408014 01408014 00000000 00000000
        0x00a0: 00000000 006e8514 00000001 00000000
        0x00b0: 0007ffcc 0000000b 00000000 02ba1755
        0x00c0: 00033333 00033333 00000000 00000000
        0x00d0: 00000001 00000001 07f0ffff 00000000
        0x00e0: 004701b6 00003097 00000000 00000000
        0x00f0: 0000001e 00000000 00000000 00000000
(snip)

and dmesg

OpenBSD 4.5-beta (GENERIC) #1735: Sun Feb 22 20:14:48 MST 2009
    dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: AMD Athlon(tm) XP 2500+ ("AuthenticAMD" 686-class, 512KB L2 cache)
1.84 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
real mem  = 1038651392 (990MB)
avail mem = 995995648 (949MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 10/03/03, BIOS32 rev. 0 @ 0xfb580,
SMBIOS rev. 2.2 @ 0xf0000 (35 entries)
bios0: vendor Phoenix Technologies, LTD version "6.00 PG" date 10/03/2003
bios0: Shuttle Inc MN31
apm0 at bios0: Power Management spec V1.2 (slowidle)
apm0: AC on, battery charge unknown
acpi at bios0 function 0x0 not configured
pcibios0 at bios0: rev 2.1 @ 0xf0000/0xdf84
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdef0/144 (7 entries)
pcibios0: PCI Exclusive IRQs: 5 11
pcibios0: no compatible PCI ICU found
pcibios0: Warning, unable to fix up PCI interrupt routing
pcibios0: PCI bus #3 is the last bus
bios0: ROM list: 0xc0000/0xdc00 0xd0000/0x4000! 0xd4000/0x1800
cpu0 at mainbus0: (uniprocessor)
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "NVIDIA nForce2 PCI" rev 0xa2
agp at pchb0 not configured
"NVIDIA nForce2" rev 0xa2 at pci0 dev 0 function 1 not configured
"NVIDIA nForce2" rev 0xa2 at pci0 dev 0 function 2 not configured
"NVIDIA nForce2" rev 0xa2 at pci0 dev 0 function 3 not configured
"NVIDIA nForce2" rev 0xa2 at pci0 dev 0 function 4 not configured
"NVIDIA nForce2" rev 0xa2 at pci0 dev 0 function 5 not configured
pcib0 at pci0 dev 1 function 0 "NVIDIA nForce2 ISA" rev 0xa3
nviic0 at pci0 dev 1 function 1 "NVIDIA nForce2 SMBus" rev 0xa2
iic0 at nviic0
spdmem0 at iic0 addr 0x50: 512MB DDR SDRAM non-parity PC2700CL2.5
spdmem1 at iic0 addr 0x51: 512MB DDR SDRAM non-parity PC2700CL2.5
iic1 at nviic0
ohci0 at pci0 dev 2 function 0 "NVIDIA nForce2 USB" rev 0xa3: irq 11,
version 1.0, legacy support
ohci1 at pci0 dev 2 function 1 "NVIDIA nForce2 USB" rev 0xa3: irq 5,
version 1.0, legacy support
ehci0 at pci0 dev 2 function 2 "NVIDIA nForce2 USB" rev 0xa3: irq 11
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "NVIDIA EHCI root hub" rev 2.00/1.00 addr 1
nfe0 at pci0 dev 4 function 0 "NVIDIA nForce2 LAN" rev 0xa1: irq 11,
address 00:30:1b:38:df:56
rlphy0 at nfe0 phy 1: RTL8201L 10/100 PHY, rev. 1
"NVIDIA nForce2 Audio" rev 0xa2 at pci0 dev 5 function 0 not configured
auich0 at pci0 dev 6 function 0 "NVIDIA nForce2 AC97" rev 0xa1: irq 5,
nForce2 AC97
ac97: codec id 0x414c4720 (Avance Logic ALC650)
ac97: codec features 20 bit DAC, 18 bit ADC, Realtek 3D
audio0 at auich0
ppb0 at pci0 dev 8 function 0 "NVIDIA nForce2 PCI-PCI" rev 0xa3
pci1 at ppb0 bus 1
ral0 at pci1 dev 8 function 0 "Ralink RT2561S" rev 0x00: irq 5, address
00:1e:e5:23:18:81
ral0: MAC/BBP RT2561C, RF RT2527
pciide0 at pci0 dev 9 function 0 "NVIDIA nForce2 IDE" rev 0xa2: DMA,
channel 0 configured to compatibility, channel 1 configured to
compatibility
wd0 at pciide0 channel 0 drive 0: <ST380011A>
wd0: 16-sector PIO, LBA48, 76319MB, 156301488 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <JLMS, XJ-HD166S, DS14> ATAPI 5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
"NVIDIA nForce2 FireWire" rev 0xa3 at pci0 dev 13 function 0 not configured
ppb1 at pci0 dev 30 function 0 "NVIDIA nForce2 AGP" rev 0xa2
pci2 at ppb1 bus 3
vga1 at pci2 dev 0 function 0 "NVIDIA GeForce4 MX nForce GPU" rev 0xa3
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com1 at isa0 port 0x2f8/8 irq 3: 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
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>
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
it0 at isa0 port 0x2e/2: IT8712F rev 5, EC port 0x290
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
usb1 at ohci0: USB revision 1.0
uhub1 at usb1 "NVIDIA OHCI root hub" rev 1.00/1.00 addr 1
usb2 at ohci1: USB revision 1.0
uhub2 at usb2 "NVIDIA OHCI root hub" rev 1.00/1.00 addr 1
biomask ef65 netmask ef65 ttymask ffff
mtrr: Pentium Pro MTRR support
softraid0 at root
PXE boot MAC address 00:30:1b:38:df:56, interface nfe0
nfs_boot: using interface nfe0, with revarp & bootparams
nfs_boot: client_addr=192.168.1.101
nfs_boot: server_addr=192.168.1.45 hostname=s1
root on 192.168.1.45:/export/diskless/4.5/s1
nfs_boot: bootparam get swap: 60
WARNING: no swap
swapmount: no device

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