APCI on old Thinkpad

I have an old thinkpad - really old

On booting it stops when listing the acpi sleep states and does nothing
more. This is dmesg:

OpenBSD 7.3 (GENERIC) #660: Sat Mar 25 11:17:44 MDT 2023
deraadt@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
real mem = 200753152 (191MB)
avail mem = 179949568 (171MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: date 11/01/99, BIOS32 rev. 0 @ 0xfd840, SMBIOS rev. 2.2 @ 0xe0010 (35 entries)
bios0: vendor IBM version "IMET56WW" date 11/01/99
bios0: IBM 26443AG
acpi at bios0: ACPI 1.0
acpi0: sleep states S0 S1 S3 S4 S5


It can boot when disabling acpi (see dmesg below).
But then I can't zzz/ZZZ.
Ist there something other I can than disabling acpi?
Or is this old device simply not supported any more?


OpenBSD 7.3 (GENERIC) #660: Sat Mar 25 11:17:44 MDT 2023
deraadt@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
real mem = 200753152 (191MB)
avail mem = 179949568 (171MB)
User Kernel Config
UKC> disable acpi
526 acpi0 disabled
UKC> quit
Continuing...
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: date 11/01/99, BIOS32 rev. 0 @ 0xfd840, SMBIOS rev. 2.2 @ 0xe0010 (35 entries)
bios0: vendor IBM version "IMET56WW" date 11/01/99
bios0: IBM 26443AG
acpi at bios0 function 0x0 not configured
apm0 at bios0: Power Management spec V1.2
pcibios0 at bios0: rev 2.1 @ 0xfd7d0/0x830
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdef0/192 (10 entries)
pcibios0: PCI Interrupt Router at 000:06:0 ("Intel 82371FB ISA" rev 0x00)
pcibios0: PCI bus #9 is the last bus
bios0: ROM list: 0xc0000/0xc000
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel Celeron ("GenuineIntel" 686-class, 256KB L2 cache) 366 MHz, 06-06-0a
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PSE36,MMX,FXSR,PERF,MELTDOWN
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x03
intelagp0 at pchb0
agp0 at intelagp0: aperture at 0xf8000000, size 0x4000000
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x03
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "Neomagic Magicgraph NM2200" rev 0x20
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
cbb0 at pci0 dev 2 function 0 "TI PCI1450 CardBus" rev 0x03: irq 11
cbb1 at pci0 dev 2 function 1 "TI PCI1450 CardBus" rev 0x03: irq 11
clcs0 at pci0 dev 5 function 0 "Cirrus Logic CS4280/46xx CrystalClear" rev 0x01: irq 11
ac97: codec id 0x43525903 (Cirrus Logic CS4297 rev 3)
ac97: codec features headphone, 18 bit DAC, 18 bit ADC, No 3D Stereo
pcib0 at pci0 dev 6 function 0 "Intel 82371AB PIIX4 ISA" rev 0x02
pciide0 at pci0 dev 6 function 1 "Intel 82371AB IDE" rev 0x01: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <IBM-DBCA-204860>
wd0: 16-sector PIO, LBA, 3909MB, 8007552 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <TOSHIBA, CD-ROM XM-1902B, 1717> removable
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
uhci0 at pci0 dev 6 function 2 "Intel 82371AB USB" rev 0x01: irq 11
piixpm0 at pci0 dev 6 function 3 "Intel 82371AB Power" rev 0x02: SMI
iic0 at piixpm0
"AT&T/Lucent LTMODEM" rev 0x01 at pci0 dev 7 function 0 not configured
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 7 device 0 cacheline 0x8, lattimer 0xb0
pcmcia0 at cardslot0
cbb1: bad Vcc request. sock_ctrl 0x0, sock_status 0x30000b20
cardslot1 at cbb1 slot 1 flags 0
cardbus1 at cardslot1: bus 9 device 0 cacheline 0x8, lattimer 0xb0
pcmcia1 at cardslot1
isa0 at pcib0
isadma0 at isa0
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lpt2 at isa0 port 0x3bc/4: polled
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
usb0 at uhci0: USB revision 1.0
uhub0 at usb0 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 addr 1
cbb1: bad Vcc request. sock_ctrl 0x30, sock_status 0x30000b20
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on wd0a (bdf7ab95ec79e5e9.a) swap on wd0b dump on wd0b
rl0 at cardbus1 dev 0 function 0 "D-Link DFE-690TXD" rev 0x10: irq 11, address 00:11:95:5a:f8:7a
rlphy0 at rl0 phy 0: RTL internal PHY
clcs0: firmware loaded
audio0 at clcs0
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec