Public bug reported:
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug zesty
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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
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