APM: "unrecognized device ID"?

[henric_(_at_)_aimnet_(_dot_)_com]

When I do "shutdown -hp now" or "halt -p", I get the following warning:
Attempting to power down...
apm0: APM set power state: unrecognized device ID (9)

The system does power down, but what does the message mean?

The system is an Asus P2B with the latest BIOS.  I cvs up'ed the source
and rebuilt yesterday, so everything should be up to date.

dmesg as follows (note that I'm running w/o keyboard):

bootargv: diskinfo 0xe03eb00c cksumlen 1 memmap 0xe03eb088 apminfo
0xe03eb120
OpenBSD 2.6 (HENRIC) #10: Thu Nov 11 22:12:45 PST 1999
    henric_(_at_)_mcp:/usr/src/sys/arch/i386/compile/HENRIC
cpu0: Intel Pentium II (Celeron) ("GenuineIntel" 686-class, 128KB L2
cache) 334
MHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SYS,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXS
R
BIOS mem  = 655360 conventional, 66048000 extended
real mem  = 66703360
avail mem = 59408384
using 839 buffers containing 3436544 bytes of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(57) BIOS, date 07/16/99
apm0 at bios0: Power Management spec V1.1
apm0: AC on, no battery
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443BX PCI-AGP (PAC)" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP (PAC)" rev 0x03
pci1 at ppb0 bus 1
"Matrox MGA G200 AGP" rev 0x01 at pci1 dev 0 function 0 not configured
pcib0 at pci0 dev 4 function 0 "Intel 82371AB PIIX4 ISA" rev 0x02
pciide0 at pci0 dev 4 function 1 "Intel 82371AB IDE (PIIX4)" rev 0x01:
DMA, chan
nel 0 wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <QUANTUM FIREBALL ST4.3A>
wd0: can use 32-bit, PIO mode 4, DMA mode 2, Ultra-DMA mode 2
wd0: 16-sector PIO, LBA, 4110MB, 14848 cyl, 9 head, 63 sec, 8418816
sectors
pciide0: channel 0 interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data
transfers)
atapiscsi0 at pciide0 channel 1
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 1 lun 0: <TOSHIBA, CD-ROM XM-6002B, 0527> SCSI0
5/cdrom rem
ovable
cd0: can use 32-bit, PIO mode 3, DMA mode 1
pciide0: channel 1 interrupting at irq 15
cd0(pciide0:1:1): using PIO mode 0, DMA mode 1 (using DMA data
transfers)
"Intel 82371AB USB (PIIX4)" rev 0x01 at pci0 dev 4 function 2 not
configured
"Intel 82371AB Power Management (PIIX4)" rev 0x02 at pci0 dev 4 function
3 not c
onfigured
xl0 at pci0 dev 9 function 0 "3Com 3c905B 100Base-TX" rev 0x30: irq 5
address 00
:50:04:1a:0f:dd
exphy0 at xl0 phy 24: 3Com internal media interface
xl1 at pci0 dev 10 function 0 "3Com 3c905B 100Base-TX" rev 0x30: irq 12
address
00:50:04:1a:0f:e3
exphy1 at xl1 phy 24: 3Com internal media interface
xl2 at pci0 dev 11 function 0 "3Com 3c900 10Base-T" rev 0x00: irq 10
address 00:
60:97:7e:ef:53
xl2: selecting 10baseT transceiver, half duplex
"Creative Labs SoundBlaster Live" rev 0x04 at pci0 dev 12 function 0 not
configu
red
"Creative Labs SoundBlaster Digital Input" rev 0x01 at pci0 dev 12
function 1 no
t configured
isa0 at pcib0
isadma0 at isa0
pcppi0 at isa0 port 0x61
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom0: console
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pcvt: doreset() - got KEYB_R_RESEND response ... [one time only msg]
pcvt: doreset() - Caution - no PC keyboard detected!
vt0 at isa0 port 0x60/16 irq 1Keyboard LED command not ACKed (responses
0xfe 0xf
e)
Keyboard LED command not ACKed (responses 0xfe 0xfe)
Keyboard LED command not ACKed (responses 0xfe 0xfe)
Keyboard LED command not ACKed (responses 0xfe 0xfe)
Keyboard LED command not ACKed (responses 0xfe 0xfe)
Keyboard LED command not ACKed (responses 0xfe 0xfe)
Keyboard LED command not ACKed (responses 0xfe 0xfe)
Keyboard LED command not ACKed (responses 0xfe 0xfe)
Keyboard LED command not ACKed (responses 0xfe 0xfe)
: generic VGA, 80 col, color, 8 scr, unknown kbd
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask c040 netmask d460 ttymask d4e2
pctr: 686-class user-level performance counters enabled
dkcsum: wd0 matched BIOS disk 80
rootdev=0x0 rrootdev=0x300 rawdev=0x302
IP Filter: initialized.  Default = pass all, Logging = enabled
xl2: selecting 10baseT transceiver, half duplex