Comment 0 for bug 1800838

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)