Hi Tero, Apologies if this breaks the threading -- I wasn't subscribed to misc@ at the time the original was sent.
Have you (or any others) dug any deeper into this? I've spent a good few hours reading different related threads, but haven't found any solutions, and you seem to have come closest to narrowing down the search space for the root cause. I am also experiencing a similar heat problem on my X220. When idling, I am consistently seeing ~50deg Celcius for the CPU. I've seen this with a fresh install of 6.6 and more recently on -current. I downgraded to 6.5 and the issue disappeared (with idle CPU's at mid thirties or so). I should note that these temperatures hold for just idling in the console (no X11). Based on my symptoms, and your description, I have a hunch I might be seeing the same issue you described. In particular, the other reports of heat seem to have been solved by tweaking the BIOS settings [1], but I tried all the mentioned settings and more without any luck. If anyone has any pointers on where to look as next steps (what part of the 250k line diff might be problematic, troubleshooting steps, etc), that would be very welcome too! Thanks all for your time and help, Alex [1]: https://marc.info/?t=157383337800003 dmesg: OpenBSD 6.6-current (GENERIC.MP) #653: Thu Feb 20 21:40:37 MST 2020 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 4156157952 (3963MB) avail mem = 4017606656 (3831MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xdae9c000 (64 entries) bios0: vendor LENOVO version "8DET76WW (1.46 )" date 06/21/2018 bios0: LENOVO 4286CTO acpi0 at bios0: ACPI 4.0 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SLIC 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: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz, 797.55 MHz, 06-2a-07 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,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN cpu0: 256KB 64b/line 8-way L2 cache cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges cpu0: apic clock running at 99MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.1.2, IBE cpu1 at mainbus0: apid 2 (application processor) cpu1: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz, 797.42 MHz, 06-2a-07 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,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 0, core 1, package 0 ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins acpimcfg0 at acpi0 acpimcfg0: 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 -1 (EXP4) acpiprt5 at acpi0: bus 13 (EXP5) acpiprt6 at acpi0: bus 14 (EXP7) acpicpu0 at acpi0: C3(200@109 io@0x416), C2(500@80 io@0x414), C1(1000@1 halt), PSS acpicpu1 at acpi0: C3(200@109 io@0x416), C2(500@80 io@0x414), C1(1000@1 halt), PSS acpipwrres0 at acpi0: PUBS, resource for EHC1, EHC2 acpitz0 at acpi0: critical temperature is 99 degC acpibtn0 at acpi0: LID_ acpibtn1 at acpi0: SLPB acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001 acpicmos0 at acpi0 tpm0 at acpi0: TPM_ addr 0xfed40000/0x5000, device 0x0000104a rev 0x4e acpibat0 at acpi0: BAT0 model "42T4940" serial 5067 type LION oem "SANYO" acpiac0 at acpi0: AC unit offline acpithinkpad0 at acpi0: version 1.0 "PNP0C14" at acpi0 not configured "PNP0C14" at acpi0 not configured acpidock0 at acpi0: GDCK not docked (0) acpivideo0 at acpi0: VID_ acpivout0 at acpivideo0: LCD0 acpivideo1 at acpi0: VID_ cpu0: using VERW MDS workaround (except on vmm entry) cpu0: Enhanced SpeedStep 797 MHz: speeds: 2701, 2700, 2400, 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 inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 3000" rev 0x09 drm0 at inteldrm0 inteldrm0: msi "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:f1:66:e4:d2 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 configuration 1 interface 0 "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 CX20590, Intel/0x2805, using Conexant CX20590 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:b4:62:f6:94 ppb2 at pci0 dev 28 function 4 "Intel 6 Series PCIE" rev 0xb4: msi pci3 at ppb2 bus 13 sdhc0 at pci3 dev 0 function 0 "Ricoh 5U822 SD/MMC" rev 0x07: apic 2 int 16 sdhc0: SDHC 3.0, 50 MHz base clock sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed, dma ppb3 at pci0 dev 28 function 6 "Intel 6 Series PCIE" rev 0xb4: msi pci4 at ppb3 bus 14 xhci0 at pci4 dev 0 function 0 "NEC xHCI" rev 0x04: msi, xHCI 0.96 usb1 at xhci0: USB revision 3.0 uhub1 at usb1 configuration 1 interface 0 "NEC xHCI root hub" rev 3.00/1.00 addr 1 ehci1 at pci0 dev 29 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 23 usb2 at ehci1: USB revision 2.0 uhub2 at usb2 configuration 1 interface 0 "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 ahci0: port 0: 6.0Gb/s scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, Samsung SSD 860, RVT0> naa.5002538e0990ccb4 sd0: 476940MB, 512 bytes/sector, 976773168 sectors, thin 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 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 aps0 at isa0 port 0x1600/31 uhub3 at uhub0 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 uhub4 at uhub2 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on sd0a (a5dc5703567b639e.a) swap on sd0b dump on sd0b inteldrm0: 1366x768, 32bpp wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0 wsdisplay0: screen 1-5 added (std, vt100 emulation) sysctl hw: hw.machine=amd64 hw.model=Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz hw.ncpu=4 hw.byteorder=1234 hw.pagesize=4096 hw.disknames=sd0:a5dc5703567b639e hw.diskcount=1 hw.sensors.cpu0.temp0=54.00 degC hw.sensors.acpitz0.temp0=60.00 degC (zone temperature) hw.sensors.acpibtn0.indicator0=On (lid open) hw.sensors.acpibat0.volt0=11.10 VDC (voltage) hw.sensors.acpibat0.volt1=11.33 VDC (current voltage) hw.sensors.acpibat0.power0=18.63 W (rate) hw.sensors.acpibat0.watthour0=67.48 Wh (last full capacity) hw.sensors.acpibat0.watthour1=3.37 Wh (warning capacity) hw.sensors.acpibat0.watthour2=0.20 Wh (low capacity) hw.sensors.acpibat0.watthour3=39.89 Wh (remaining capacity), OK hw.sensors.acpibat0.watthour4=86.58 Wh (design capacity) hw.sensors.acpibat0.raw0=1 (battery discharging), OK hw.sensors.acpiac0.indicator0=Off (power supply) hw.sensors.acpithinkpad0.temp0=60.00 degC hw.sensors.acpithinkpad0.temp1=60.00 degC hw.sensors.acpithinkpad0.temp2=60.00 degC hw.sensors.acpithinkpad0.temp3=60.00 degC hw.sensors.acpithinkpad0.temp4=60.00 degC hw.sensors.acpithinkpad0.temp5=60.00 degC hw.sensors.acpithinkpad0.temp6=60.00 degC hw.sensors.acpithinkpad0.temp7=60.00 degC hw.sensors.acpithinkpad0.fan0=3499 RPM hw.sensors.acpithinkpad0.indicator0=Off (port replicator), UNKNOWN hw.sensors.acpidock0.indicator0=Off (not docked), UNKNOWN hw.sensors.aps0.temp0=42.00 degC hw.sensors.aps0.temp1=42.00 degC hw.sensors.aps0.indicator0=On (Keyboard Active) hw.sensors.aps0.indicator1=Off (Mouse Active) hw.sensors.aps0.indicator2=On (Lid Open) hw.sensors.aps0.raw0=518 (X_ACCEL) hw.sensors.aps0.raw1=529 (Y_ACCEL) hw.sensors.aps0.raw2=518 (X_VAR) hw.sensors.aps0.raw3=529 (Y_VAR) hw.cpuspeed=800 hw.setperf=0 hw.vendor=LENOVO hw.product=4286CTO hw.version=ThinkPad X220 hw.serialno=R9E5WG1 hw.uuid=01d16e6c-2651-cb11-adad-e9f50fae8eca hw.physmem=4042915840 hw.usermem=3998732288 hw.ncpufound=4 hw.allowpowerdown=1 hw.perfpolicy=auto hw.smt=0 hw.ncpuonline=2
