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After installing Ubuntu 20.04 LTS, my laptop's temperature goes fairly
high without intensive CPU activity. The fan(s) remain **off** under
heavy CPU load and the temperature goes very high.
I don't suspect a material failure since I didn't notice such
overheating issues anymore with my previous Ubuntu (19.04) (after using
sudo prime-select intel).
**Config**
- ASUS UX533FN
- BIOS version 304 (up-to-date)
- Kernel: 5.4.0-31-generic (same issue with 5.4.0-29)
- NVIDIA GeForce MX150 (with latest NVIDIA driver)
Low CPU load
============
Without running anything special, I get the following figures with `sensors`
command:
...
pch_cannonlake-virtual-0
Adapter: Virtual device
temp1: +49.0°C
BAT0-acpi-0
Adapter: ACPI interface
in0: 15.60 V
asus-isa-0000
Adapter: ISA adapter
cpu_fan: 0 RPM
coretemp-isa-0000
Adapter: ISA adapter
Package id 0: +50.0°C (high = +100.0°C, crit = +100.0°C)
Core 0: +49.0°C (high = +100.0°C, crit = +100.0°C)
Core 1: +48.0°C (high = +100.0°C, crit = +100.0°C)
Core 2: +48.0°C (high = +100.0°C, crit = +100.0°C)
Core 3: +50.0°C (high = +100.0°C, crit = +100.0°C)
acpitz-acpi-0
Adapter: ACPI interface
temp1: +49.0°C (crit = +103.0°C)
These figures are a too high in my opinion for low CPU load with a room
temperature of 20°C.
But here come's worse:
Heavy CPU load
==============
When the CPU is under load, for instance when running `sysbench cpu run` in
loop, the temperature increases to 90°C, and no fan is triggered!
To get a repeatable CPU load test, I run
while true; do echo "One more time..." && sysbench cpu run; done
Here are the figures I get in this case (from `sensors` command):
...
pch_cannonlake-virtual-0
Adapter: Virtual device
temp1: +65.0°C
BAT0-acpi-0
Adapter: ACPI interface
in0: 15.60 V
asus-isa-0000
Adapter: ISA adapter
cpu_fan: 0 RPM
coretemp-isa-0000
Adapter: ISA adapter
Package id 0: +88.0°C (high = +100.0°C, crit = +100.0°C)
Core 0: +88.0°C (high = +100.0°C, crit = +100.0°C)
Core 1: +70.0°C (high = +100.0°C, crit = +100.0°C)
Core 2: +72.0°C (high = +100.0°C, crit = +100.0°C)
Core 3: +72.0°C (high = +100.0°C, crit = +100.0°C)
acpitz-acpi-0
Adapter: ACPI interface
temp1: +86.0°C (crit = +103.0°C)
Note 1: The temperature in the room for this test is 20°C.
Note 2: I got almost the same issue one year ago with Ubuntu 19.04 and
used the sudo prime-select intel workaround.
What I already tried
====================
- installing the latest NVIDIA driver, including selecting `intel` with
`prime-select` ameliorated the situation but didn't tackle the issue
- running `sensors-detect` (YES to all questions) resulted in `coretemp`
to be added to `/etc/modules`
- running `pwmconfig` didn't work:
/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-31-generic 5.4.0-31.35
ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34
Uname: Linux 5.4.0-31-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sylvain 1710 F.... pulseaudio
/dev/snd/pcmC0D0p: sylvain 1710 F...m pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu May 21 20:58:45 2020
InstallationDate: Installed on 2020-05-08 (13 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 13d3:56cb IMC Networks USB2.0 HD IR UVC WebCam
Bus 001 Device 003: ID 8087:0aaa Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. ZenBook UX533FN_UX533FN
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-31-generic
root=UUID=1fba935a-ac77-4cdb-bc3a-d3ce26e567d9 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-31-generic N/A
linux-backports-modules-5.4.0-31-generic N/A
linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/16/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX533FN.304
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX533FN
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrUX533FN.304:bd10/16/2019:svnASUSTeKCOMPUTERINC.:pnZenBookUX533FN_UX533FN:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX533FN:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: ZenBook
dmi.product.name: ZenBook UX533FN_UX533FN
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
--
ASUS UX533F overheating and fan off with Ubuntu 20.04 LTS
https://bugs.launchpad.net/bugs/1880012
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