For what it's worth, I didn't notice the same problem booting 5.2
current on an x220.
OpenBSD 5.2-current (GENERIC.MP) #378: Mon Aug 20 12:55:12 MDT 2012
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 8471048192 (8078MB)
avail mem = 8223129600 (7842MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xdae23000 (66 entries)
bios0: vendor LENOVO version 8DET46WW (1.16 ) date 05/18/2011
bios0: LENOVO 4291AK7
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SLIC SSDT SSDT SSDT HPET APIC MCFG ECDT ASF!
TCPA SSDT SSDT DMAR UEFI UEFI UEFI
acpi0: wakeup devices LID_(S3) SLPB(S3) IGBE(S4) EXP4(S4) EXP7(S4)
EHC1(S3) EHC2(S3) HDEF(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpihpet0 at acpi0: 14318179 Hz
acpimadt0 at acpi0 addr 0xfee0: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2492.29 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,PCLMUL,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,POPCNT,AES,XSAVE,AVX,NXE,LONG,LAHF
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: apic clock running at 99MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.91 MHz
cpu1:
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,PCLMUL,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,POPCNT,AES,XSAVE,AVX,NXE,LONG,LAHF
cpu1: 256KB 64b/line 8-way L2 cache
cpu2 at mainbus0: apid 2 (application processor)
cpu2: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.91 MHz
cpu2:
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,PCLMUL,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,POPCNT,AES,XSAVE,AVX,NXE,LONG,LAHF
cpu2: 256KB 64b/line 8-way L2 cache
cpu3 at mainbus0: apid 3 (application processor)
cpu3: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.91 MHz
cpu3:
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,PCLMUL,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,POPCNT,AES,XSAVE,AVX,NXE,LONG,LAHF
cpu3: 256KB 64b/line 8-way L2 cache
ioapic0 at mainbus0: apid 2 pa 0xfec0, version 20, 24 pins
acpimcfg0 at acpi0 addr 0xf800, bus 0-63
acpiec0 at acpi0
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PEG_)
acpiprt2 at acpi0: bus 2 (EXP1)
acpiprt3 at acpi0: bus 3 (EXP2)
acpiprt4 at acpi0: bus 5 (EXP4)
acpiprt5 at acpi0: bus 13 (EXP5)
acpiprt6 at acpi0: bus -1 (EXP7)
acpicpu0 at acpi0: C3, C2, C1, PSS
acpicpu1 at acpi0: C3, C2, C1, PSS
acpicpu2 at acpi0: C3, C2, C1, PSS
acpicpu3 at acpi0: C3, C2, C1, PSS
acpipwrres0 at acpi0: PUBS
acpitz0 at acpi0: critical temperature is 99 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: SLPB
acpibat0 at acpi0: BAT0 model 42T4942 serial 10924 type LION oem LGC
acpibat1 at acpi0: BAT1 not present
acpiac0 at acpi0: AC unit offline
acpithinkpad0 at acpi0
acpidock0 at acpi0: GDCK not docked (0)
cpu0: Enhanced SpeedStep 2492 MHz: speeds: 2501, 2500, 2200, 2000,
1800, 1600, 1400, 1200, 1000, 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 Intel Core 2G Host rev 0x09
vga1 at pci0 dev 2 function 0 Intel HD Graphics 3000 rev 0x09
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
intagp0 at vga1
agp0 at intagp0: aperture at 0xe000, size 0x1000
inteldrm0 at vga1: apic 2 int 16
drm0 at inteldrm0
Intel 6 Series MEI rev 0x04 at pci0 dev 22 function 0 not configured
puc0 at pci0 dev 22 function 3 Intel 6 Series KT rev 0x04: ports: 1 com
com2 at puc0 port 0 apic 2 int 19: ns16550a, 16 byte fifo
com2: probed fifo depth: 0 bytes
em0 at pci0 dev 25 function 0 Intel 82579LM rev 0x04: msi, address
f0:de:f1:6d:48:c3
ehci0 at pci0 dev 26 function 0 Intel 6 Series USB rev 0x04: apic 2 int 16
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 Intel EHCI root hub rev 2.00/1.00 addr 1
azalia0 at pci0 dev 27 function 0 Intel 6 Series HD Audio rev 0x04: msi
azalia0: codecs: Conexant/0x506e, Intel/0x2805, using Conexant/0x506e
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 Intel 6 Series PCIE rev 0xb4: msi
pci1 at ppb0 bus 2
ppb1 at pci0 dev 28 function 1 Intel 6 Series PCIE rev 0xb4: msi
pci2 at ppb1 bus 3
iwn0 at pci2 dev 0 function 0 Intel Centrino Advanced-N 6205 rev
0x34: msi, MIMO 2T2R, MoW, address a0:88:b4:7f:80:4c
ppb2 at pci0 dev 28 function 3 Intel 6 Series PCIE rev 0xb4: msi
pci3 at ppb2 bus 5
ppb3 at pci0 dev 28 function 4 Intel 6 Series PCIE rev 0xb4: msi
pci4 at ppb3 bus 13
sdhc0 at pci4 dev 0 function 0 Ricoh 5U823 SD/MMC rev 0x04: apic 2 int 16
sdmmc0 at sdhc0
ehci1 at pci0 dev 29 function 0 Intel 6 Series USB rev 0x04: apic 2 int 23
usb1 at ehci1: USB
