Hello, several people reported about various problems with Lenovo Thinkpad X1 Carbon 6th gen (X1C6), when performance become sluggish and fan goes wild. [1] [2] [3]
I had similar problem (system OK, become sluggish with high CPU utilization after sleep/wake), but was able to completely and reliably fix it by updating to latest Lenovo BIOS (2018-09-17, version 1.31), and setting the following settings in the BIOS: * UEFI Secure Boot: Off * Power -> Sleep State: Linux * Startup -> UEFI/Legacy Boot: UEFI Only * Startup -> CSM Support: Yes * Config -> Thunderbolt(TM) 3 -> Thunderbolt BIOS Assist Mode: Enable * Config -> Thunderbolt(TM) 3 -> Wake by Thunderbolt(TM) 3: Disable It's the Thunderbolt BIOS Assist Mode: Enable that finally solved my problem. (In the BIOS itself, it recommends to set this option to Enable for Linux systems). Everything is perfect now with my system. I'm running -current: thor$ dmesg | grep OpenBSD OpenBSD 6.4-current (GENERIC.MP) #391: Thu Oct 25 15:27:35 MDT 2018 I'm happy to assist other OpenBSD users or developers if you need help further investigating this issue. I have described my adventure, along with dmesg and other details, here [4]. My dmesg is below. [1] https://www.youtube.com/watch?v=lb7mDXHGDFk [2] https://marc.info/?l=openbsd-bugs&m=154070079630478 [3] https://marc.info/?l=openbsd-bugs&m=153770491811274&w=2 [4] https://www.reddit.com/r/openbsd/comments/9q8atz/thinkpad_x1c6_heats_up_dramatically_drops/ OpenBSD 6.4-current (GENERIC.MP) #391: Thu Oct 25 15:27:35 MDT 2018 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 16912433152 (16128MB) avail mem = 16390590464 (15631MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 3.0 @ 0x4f057000 (63 entries) bios0: vendor LENOVO version "N23ET56W (1.31 )" date 09/17/2018 bios0: LENOVO 20KHCTO1WW acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SSDT SSDT TPM2 UEFI SSDT SSDT HPET APIC MCFG ECDT SSDT SSDT BOOT BATB SSDT SSDT SSDT LPIT WSMT SSDT SSDT SSDT DBGP DBG2 MSDM DMAR NHLT ASF! FPDT UEFI acpi0: wakeup devices GLAN(S4) XHC_(S3) XDCI(S4) HDAS(S4) RP01(S4) PXSX(S4) RP02(S4) PXSX(S4) PXSX(S4) RP04(S4) PXSX(S4) RP05(S4) PXSX(S4) RP06(S4) PXSX(S4) RP07(S4) [...] acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 23999999 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1393.14 MHz, 06-8e-0a 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,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,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 23MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1.1.1, IBE cpu1 at mainbus0: apid 2 (application processor) cpu1: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1138.49 MHz, 06-8e-0a 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,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 0, core 1, package 0 cpu2 at mainbus0: apid 4 (application processor) cpu2: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 950.25 MHz, 06-8e-0a 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,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN cpu2: 256KB 64b/line 8-way L2 cache cpu2: smt 0, core 2, package 0 cpu3 at mainbus0: apid 6 (application processor) cpu3: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 897.90 MHz, 06-8e-0a 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,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN cpu3: 256KB 64b/line 8-way L2 cache cpu3: smt 0, core 3, package 0 ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins acpimcfg0 at acpi0 acpimcfg0: addr 0xf0000000, bus 0-127 acpiec0 at acpi0 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 2 (RP01) acpiprt2 at acpi0: bus -1 (RP02) acpiprt3 at acpi0: bus -1 (RP03) acpiprt4 at acpi0: bus -1 (RP04) acpiprt5 at acpi0: bus 4 (RP05) acpiprt6 at acpi0: bus -1 (RP06) acpiprt7 at acpi0: bus -1 (RP07) acpiprt8 at acpi0: bus -1 (RP08) acpiprt9 at acpi0: bus 5 (RP09) acpiprt10 at acpi0: bus -1 (RP10) acpiprt11 at acpi0: bus -1 (RP11) acpiprt12 at acpi0: bus -1 (RP12) acpiprt13 at acpi0: bus -1 (RP13) acpiprt14 at acpi0: bus -1 (RP14) acpiprt15 at acpi0: bus -1 (RP15) acpiprt16 at acpi0: bus -1 (RP16) acpiprt17 at acpi0: bus -1 (RP17) acpiprt18 at acpi0: bus -1 (RP18) acpiprt19 at acpi0: bus -1 (RP19) acpiprt20 at acpi0: bus -1 (RP20) acpiprt21 at acpi0: bus -1 (RP21) acpiprt22 at acpi0: bus -1 (RP22) acpiprt23 at acpi0: bus -1 (RP23) acpiprt24 at acpi0: bus -1 (RP24) acpicpu0 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS acpicpu1 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS acpicpu2 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS acpicpu3 at acpi0: C3(200@1034 mwait.1@0x60), C2(200@151 mwait.1@0x33), C1(1000@1 mwait.1), PSS acpipwrres0 at acpi0: PUBS, resource for XHC_ acpitz0 at acpi0: critical temperature is 128 degC acpipci0 at acpi0 PCI0: 0x00000010 0x00000011 0x00000000 acpithinkpad0 at acpi0 acpiac0 at acpi0: AC unit offline acpibat0 at acpi0: BAT0 model "01AV494" serial 2141 type LiP oem "LGC" "LEN0100" at acpi0 not configured "INT3403" at acpi0 not configured acpicmos0 at acpi0 "INT0E0C" at acpi0 not configured acpibtn0 at acpi0: SLPB "PNP0C14" at acpi0 not configured acpibtn1 at acpi0: LID_ "PNP0C14" at acpi0 not configured "PNP0C14" at acpi0 not configured "PNP0C14" at acpi0 not configured "INT3400" at acpi0 not configured "STM7304" at acpi0 not configured "USBC000" at acpi0 not configured acpivideo0 at acpi0: GFX0 acpivout at acpivideo0 not configured cpu0: Enhanced SpeedStep 1393 MHz: speeds: 2001, 2000, 1900, 1800, 1700, 1500, 1400, 1300, 1200, 1100, 1000, 800, 700, 600, 500, 400 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Core 8G Host" rev 0x08 inteldrm0 at pci0 dev 2 function 0 "Intel UHD Graphics 620" rev 0x07 drm0 at inteldrm0 inteldrm0: msi error: [drm:pid0:i915_firmware_load_error_print] *ERROR* failed to load firmware i915/kbl_dmc_ver1.bin (-22) inteldrm0: 2560x1440, 32bpp wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) "Intel Core 6G Thermal" rev 0x08 at pci0 dev 4 function 0 not configured "Intel Core GMM" rev 0x00 at pci0 dev 8 function 0 not configured xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x21: msi, xHCI 1.0 usb0 at xhci0: USB revision 3.0 uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 pchtemp0 at pci0 dev 20 function 2 "Intel 100 Series Thermal" rev 0x21 dwiic0 at pci0 dev 21 function 0 "Intel 100 Series I2C" rev 0x21: apic 2 int 16 iic0 at dwiic0 "Intel 100 Series MEI" rev 0x21 at pci0 dev 22 function 0 not configured ppb0 at pci0 dev 28 function 0 "Intel 100 Series PCIE" rev 0xf1: msi pci1 at ppb0 bus 2 iwm0 at pci1 dev 0 function 0 "Intel Dual Band Wireless-AC 8265" rev 0x78, msi ppb1 at pci0 dev 28 function 4 "Intel 100 Series PCIE" rev 0xf1: msi pci2 at ppb1 bus 4 nvme0 at pci2 dev 0 function 0 vendor "Intel", unknown product 0xf1a6 rev 0x03: msi, NVMe 1.3 nvme0: INTEL SSDPEKKF256G8L, firmware L08P, serial BTHH81460SY7256B scsibus1 at nvme0: 1 targets sd0 at scsibus1 targ 0 lun 0: <NVMe, INTEL SSDPEKKF25, L08P> SCSI4 0/direct fixed sd0: 244198MB, 512 bytes/sector, 500118192 sectors ppb2 at pci0 dev 29 function 0 "Intel 100 Series PCIE" rev 0xf1: msi pci3 at ppb2 bus 5 pcib0 at pci0 dev 31 function 0 "Intel 200 Series LPC" rev 0x21 "Intel 100 Series PMC" rev 0x21 at pci0 dev 31 function 2 not configured azalia0 at pci0 dev 31 function 3 "Intel 200 Series HD Audio" rev 0x21: msi azalia0: codecs: Realtek/0x0285, Intel/0x280b, using Realtek/0x0285 audio0 at azalia0 ichiic0 at pci0 dev 31 function 4 "Intel 100 Series SMBus" rev 0x21: apic 2 int 16 iic1 at ichiic0 em0 at pci0 dev 31 function 6 "Intel I219-V" rev 0x21: msi, address e8:6a:64:26:e9:46 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, using wsdisplay0 pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 wsmouse1 at pms0 mux 0 pms0: Synaptics clickpad, firmware 8.16, 0x1e2b1 0x940300 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 vmm0 at mainbus0: VMX/EPT efifb at mainbus0 not configured uvideo0 at uhub0 port 8 configuration 1 interface 0 "SunplusIT Inc Integrated Camera" rev 2.01/17.11 addr 2 video0 at uvideo0 umass0 at uhub0 port 15 configuration 1 interface 0 "Generic USB3.0-CRW" rev 3.00/29.08 addr 3 umass0: using SCSI over Bulk-Only scsibus2 at umass0: 2 targets, initiator 0 sd1 at scsibus2 targ 1 lun 0: <Generic-, SD/MMC CRW, 1.00> SCSI4 0/direct removable serial.0bda0328008282014000 vscsi0 at root scsibus3 at vscsi0: 256 targets softraid0 at root scsibus4 at softraid0: 256 targets sd2 at scsibus4 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006> SCSI2 0/direct fixed sd2: 244197MB, 512 bytes/sector, 500116577 sectors root on sd2a (8c92a635b1e05d0d.a) swap on sd2b dump on sd2b iwm0: hw rev 0x230, fw ver 22.361476.0, address 18:1d:ea:ff:aa:cd acpivideo0: unknown event 0x00 video0 detached uvideo0 detached sd1 detached scsibus2 detached umass0 detached uhub0 detached uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 uvideo0 at uhub0 port 8 configuration 1 interface 0 "SunplusIT Inc Integrated Camera" rev 2.01/17.11 addr 2 video0 at uvideo0 umass0 at uhub0 port 15 configuration 1 interface 0 "Generic USB3.0-CRW" rev 3.00/29.08 addr 3 umass0: using SCSI over Bulk-Only scsibus2 at umass0: 2 targets, initiator 0 sd1 at scsibus2 targ 1 lun 0: <Generic-, SD/MMC CRW, 1.00> SCSI4 0/direct removable serial.0bda0328008282014000
