Public bug reported:
Pure system ubuntu 18.04.1 with all update running on Lenovo p52 laptop.
CPU fans speed is very low by default and start running only after 65 degrees.
As a result laptop is very hot all the time independ what I am running.
proc shows that level control is auto
cat /proc/acpi/ibm/fan
status: enabled
speed: 0
level: auto
but it is impossible to switch fan on
echo level full-speed > /proc/acpi/ibm/fan
lspci:
00:00.0 Host bridge: Intel Corporation Device 3ec4 (rev 07)
00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 07)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor
Thermal Subsystem (rev 07)
00:08.0 System peripheral: Intel Corporation Skylake Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Device a379 (rev 10)
00:14.0 USB controller: Intel Corporation Device a36d (rev 10)
00:14.2 RAM memory: Intel Corporation Device a36f (rev 10)
00:14.3 Network controller: Intel Corporation Device a370 (rev 10)
00:15.0 Serial bus controller [0c80]: Intel Corporation Device a368 (rev 10)
00:16.0 Communication controller: Intel Corporation Device a360 (rev 10)
00:1c.0 PCI bridge: Intel Corporation Device a338 (rev f0)
00:1c.7 PCI bridge: Intel Corporation Device a33f (rev f0)
00:1d.0 PCI bridge: Intel Corporation Device a330 (rev f0)
00:1e.0 Communication controller: Intel Corporation Device a328 (rev 10)
00:1f.0 ISA bridge: Intel Corporation Device a30e (rev 10)
00:1f.3 Audio device: Intel Corporation Device a348 (rev 10)
00:1f.4 SMBus: Intel Corporation Device a323 (rev 10)
00:1f.5 Serial bus controller [0c80]: Intel Corporation Device a324 (rev 10)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (7) I219-V
(rev 10)
01:00.0 VGA compatible controller: NVIDIA Corporation Device 1cbb (rev a1)
01:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio
Controller (rev a1)
70:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI
Express Card Reader (rev 01)
71:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd Device a808
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: acpi (not installed)
ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
Uname: Linux 4.15.0-38-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
CurrentDesktop: GNOME-Flashback:GNOME
Date: Wed Oct 31 15:16:32 2018
InstallationDate: Installed on 2018-10-26 (5 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: acpi
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: acpi (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: amd64 apport-bug bionic
** Attachment added: "cpu_load.png"
https://bugs.launchpad.net/bugs/1800838/+attachment/5207517/+files/cpu_load.png
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https://bugs.launchpad.net/bugs/1800838
Title:
Lenovo P52 laptop fan control incorrect
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