Here's the output of fwts fan: Results generated by fwts: Version V17.03.00 (2017-03-16 03:24:38).
Some of this work - Copyright (c) 1999 - 2017, Intel Corp. All rights reserved. Some of this work - Copyright (c) 2010 - 2017, Canonical. Some of this work - Copyright (c) 2016 - 2017, IBM. Some of this work - Copyright (c) 2017, ARM Ltd. This test run on 12/05/17 at 08:27:40 on host Linux locrian 4.10.0-20-generic #22-Ubuntu SMP Thu Apr 20 09:22:42 UTC 2017 x86_64. Command: "fwts fan". Running tests: fan. fan: Simple fan tests. -------------------------------------------------------------------------------- Test 1 of 2: Test fan status. Test how many fans there are in the system. Check for the current status of the fan(s). PASSED: Test 1, Fan cooling_device5 of type iwlwifi has max cooling state 19 and current cooling state 0. PASSED: Test 1, Fan cooling_device3 of type Processor has max cooling state 10 and current cooling state 0. PASSED: Test 1, Fan cooling_device1 of type Processor has max cooling state 10 and current cooling state 0. FAILED [MEDIUM] NoFanCurState: Test 1, Fan present but has no cur_state present. PASSED: Test 1, Fan cooling_device2 of type Processor has max cooling state 10 and current cooling state 0. PASSED: Test 1, Fan cooling_device0 of type Processor has max cooling state 10 and current cooling state 0. Test 2 of 2: Load system, check CPU fan status. Test how many fans there are in the system. Check for the current status of the fan(s). Loading CPUs for 20 seconds to try and get fan speeds to change. Fan cooling_device3 current state did not change from value 0 while CPUs were busy. Fan cooling_device1 current state did not change from value 0 while CPUs were busy. Fan cooling_device2 current state did not change from value 0 while CPUs were busy. Fan cooling_device0 current state did not change from value 0 while CPUs were busy. ADVICE: Did not detect any change in the CPU related thermal cooling device states. It could be that the devices are returning static information back to the driver and/or the fan speed is automatically being controlled by firmware using System Management Mode in which case the kernel interfaces being examined may not work anyway. ================================================================================ 5 passed, 1 failed, 0 warning, 0 aborted, 0 skipped, 0 info only. ================================================================================ 5 passed, 1 failed, 0 warning, 0 aborted, 0 skipped, 0 info only. Test Failure Summary ================================================================================ Critical failures: NONE High failures: NONE Medium failures: 1 fan: Fan present but has no cur_state present. Low failures: NONE Other failures: NONE Test |Pass |Fail |Abort|Warn |Skip |Info | ---------------+-----+-----+-----+-----+-----+-----+ fan | 5| 1| | | | | ---------------+-----+-----+-----+-----+-----+-----+ Total: | 5| 1| 0| 0| 0| 0| ---------------+-----+-----+-----+-----+-----+-----+ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1690395 Title: CPU fan always on with kernel 4.10.0.20.22 (zesty) on a X1 Carbon 5th gen Status in linux package in Ubuntu: Confirmed Bug description: Once the CPU fan is turned on, it never turns back down, even when things have already cooled down and CPU usage is low (<2%) for 5+ minutes. The same cannot be reproduced with the previous kernel version (4.10.0.19.21), on the same machine. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: linux-image-4.10.0-20-generic 4.10.0-20.22 ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8 Uname: Linux 4.10.0-20-generic x86_64 ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: fkung 2121 F.... pulseaudio CurrentDesktop: GNOME Date: Fri May 12 08:19:29 2017 HibernationDevice: RESUME=UUID=8e5a26ba-3ea3-4831-88ba-66803bdf9d45 InstallationDate: Installed on 2017-04-06 (35 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 138a:0097 Validity Sensors, Inc. Bus 001 Device 003: ID 04f2:b5ce Chicony Electronics Co., Ltd Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20HR000FUS ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-20-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.10.0-20-generic N/A linux-backports-modules-4.10.0-20-generic N/A linux-firmware 1.164.1 SourcePackage: linux UpgradeStatus: Upgraded to zesty on 2017-05-04 (7 days ago) dmi.bios.date: 12/26/2016 dmi.bios.vendor: LENOVO dmi.bios.version: N1MET21W (1.06 ) dmi.board.asset.tag: Not Available dmi.board.name: 20HR000FUS dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1MET21W(1.06):bd12/26/2016:svnLENOVO:pn20HR000FUS:pvrThinkPadX1Carbon5th:rvnLENOVO:rn20HR000FUS:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20HR000FUS dmi.product.version: ThinkPad X1 Carbon 5th dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1690395/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp