Hello, 
i am using a Thinpad x220i and I have a weired problem. Most of the
time, i just put my notebook into suspend mode (zzz), so, I do not often
reboot. After 4 or 5 days, my notebook suddenly stops and I
can't do anything except pressing the power button for 4 or 5 seconds
and reboot. 

Sadly enough, there are no hints in the log files. Is there a way to
track this problem down somehow? I really want to help and provide
better information, but for now, I can only give you a dmesg (below).
Software I am running is firefox, xombrero, emacs, tmux and multiple
shells, wmaker (+ a few dockapps), music with mplayer and xmms2. 

Thanks for your help, 

OpenBSD 5.4 (GENERIC.MP) #44: Tue Jul 30 12:13:32 MDT 2013
    dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP
cpu0: Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz ("GenuineIntel" 686-class) 798 
MHz
cpu0: 
FPU,V86,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,PBE,LONG,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,XSAVE,AVX,LAHF,PERF,ITSC
real mem  = 3662856192 (3493MB)
avail mem = 3591561216 (3425MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 11/01/11, BIOS32 rev. 0 @ 0xfc200, SMBIOS 
rev. 2.6 @ 0xdae9c000 (67 entries)
bios0: vendor LENOVO version "8DET55WW (1.25 )" date 11/01/2011
bios0: LENOVO 4290G53
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SSDT SSDT SSDT HPET APIC MCFG ECDT ASF! TCPA SSDT SSDT 
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 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 99MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz ("GenuineIntel" 686-class) 2.30 
GHz
cpu1: 
FPU,V86,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,PBE,LONG,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,XSAVE,AVX,LAHF,PERF,ITSC
cpu2 at mainbus0: apid 2 (application processor)
cpu2: Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz ("GenuineIntel" 686-class) 2.30 
GHz
cpu2: 
FPU,V86,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,PBE,LONG,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,XSAVE,AVX,LAHF,PERF,ITSC
cpu3 at mainbus0: apid 3 (application processor)
cpu3: Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz ("GenuineIntel" 686-class) 2.30 
GHz
cpu3: 
FPU,V86,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,PBE,LONG,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,XSAVE,AVX,LAHF,PERF,ITSC
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
acpimcfg0 at acpi0 addr 0xf8000000, 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, C1, PSS
acpicpu1 at acpi0: C3, C1, PSS
acpicpu2 at acpi0: C3, C1, PSS
acpicpu3 at acpi0: C3, 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 "42T4861" serial 25401 type LION oem "SANYO"
acpibat1 at acpi0: BAT1 not present
acpiac0 at acpi0: AC unit online
acpithinkpad0 at acpi0
acpidock0 at acpi0: GDCK not docked (0)
bios0: ROM list: 0xc0000/0x10000!
cpu0: Enhanced SpeedStep 2293 MHz: speeds: 2300, 2000, 1800, 1600, 1400, 1200, 
1000, 800 MHz
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
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
intagp0 at vga1
agp0 at intagp0: aperture at 0xe0000000, size 0x10000000
inteldrm0 at vga1
drm0 at inteldrm0
inteldrm0: 1366x768
wsdisplay0 at vga1 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
"Intel 6 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
em0 at pci0 dev 25 function 0 "Intel 82579LM" rev 0x04: msi, address 
f0:de:f1:b9:8f:59
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: apic 2 int 16
pci1 at ppb0 bus 2
ppb1 at pci0 dev 28 function 1 "Intel 6 Series PCIE" rev 0xb4: apic 2 int 17
pci2 at ppb1 bus 3
iwn0 at pci2 dev 0 function 0 "Intel Centrino Advanced-N 6205" rev 0x34: msi, 
MIMO 2T2R, MoW, address 10:0b:a9:3b:e1:04
ppb2 at pci0 dev 28 function 3 "Intel 6 Series PCIE" rev 0xb4: apic 2 int 19
pci3 at ppb2 bus 5
ppb3 at pci0 dev 28 function 4 "Intel 6 Series PCIE" rev 0xb4: apic 2 int 16
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 revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
pcib0 at pci0 dev 31 function 0 "Intel QM67 LPC" rev 0x04
ahci0 at pci0 dev 31 function 2 "Intel 6 Series AHCI" rev 0x04: msi, AHCI 1.3
scsibus0 at ahci0: 32 targets
sd0 at scsibus0 targ 0 lun 0: <ATA, ST320LT020-9YG14, 0003> SCSI3 0/direct 
fixed naa.5000c500452b4e84
sd0: 305245MB, 512 bytes/sector, 625142448 sectors
ichiic0 at pci0 dev 31 function 3 "Intel 6 Series SMBus" rev 0x04: apic 2 int 18
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
isa0 at pcib0
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
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
aps0 at isa0 port 0x1600/31
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
mtrr: Pentium Pro MTRR support
uhub2 at uhub0 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
ugen0 at uhub2 port 3 "UPEK Biometric Coprocessor" rev 1.01/0.02 addr 3
ugen1 at uhub2 port 4 "Broadcom Corp Broadcom Bluetooth Device" rev 2.00/7.48 
addr 4
uvideo0 at uhub2 port 6 configuration 1 interface 0 "Chicony Electronics Co., 
Ltd. Integrated Camera" rev 2.00/8.54 addr 5
video0 at uvideo0
uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (d2ecdbc2d7d2f065.a) swap on sd0b dump on sd0b
WARNING: / was not properly unmounted
umass0 at uhub2 port 2 configuration 1 interface 0 "Western Digital Elements 
10A8" rev 2.10/10.42 addr 6
umass0: using SCSI over Bulk-Only
scsibus3 at umass0: 2 targets, initiator 0
sd1 at scsibus3 targ 1 lun 0: <WD, Elements 10A8, 1042> SCSI4 0/direct fixed 
serial.105810a8334146434853
sd1: 953837MB, 512 bytes/sector, 1953458176 sectors
ehci_idone: ex=0xd4f18900 is done!
sd1 detached
scsibus3 detached
umass0 detached
umass0 at uhub2 port 2 configuration 1 interface 0 "Western Digital Elements 
10A8" rev 2.10/10.42 addr 6
umass0: using SCSI over Bulk-Only
scsibus3 at umass0: 2 targets, initiator 0

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