I had a similar problem. turns out it was actual high load that forced
the cpu clock speed to always be more than 3GHz on all (!) cores. namely
the xorg (>100%), systemd-journald (>50%) and rsyslogd(>30%) were
consuming a lot cpu power. in the journal i could see the following line
over and over again:
SynPS/2 Synaptics TouchPad: Read error 9
After a bit of digging I found that the synaptics driver should be
replaced with the xserver-xorg-input-libinput. (which I had already
installed, maybe that was the problem)
see: https://wiki.ubuntuusers.de/Touchpad/
So after removing the package xserver-xorg-input-synaptics the cpu load
went down significantly and so did the cpu-clock and heat.
problem solved for me
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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/1768976
Title:
Ubuntu 18.04 is overheating after upgrade from 16.04
Status in linux package in Ubuntu:
Incomplete
Status in xserver-xorg-video-nouveau package in Ubuntu:
Confirmed
Bug description:
Ubuntu is overheating at my laptop. Opening youtube on firefox is
enough for critical temperature shutdown.
Using lm-sensors for monitoring on 18.04 the temp varies between 70 and 85°C
with only firefox or chrome open and doing nothing.
On my old 16.04 with same using, the temp varies between 55 and 70°C.
First thought was the driver nouveau is the problem, and finally I was
able to install by add "nouveau.modeset=0" at livecd boot options,
without temp shutdown.
After install I disable the nouveau at modprobe blacklist, but the
system continues overheating and shutdown with basic usage.
I have no idea what's happening with the bionic at my laptop.
My laptop is a Samsung RF411 i5 2nd Generation and Geforce 540M.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.17
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Thu May 3 16:22:40 2018
InstallationDate: Installed on 2018-04-27 (6 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeAptHistorylog:
Start-Date: 2018-04-27 15:46:02
End-Date: 2018-04-27 15:46:02
VarLogDistupgradeAptlog:
Log time: 2018-04-27 15:45:39.753331
Starting pkgProblemResolver with broken count: 0
Starting 2 pkgProblemResolver with broken count: 0
Done
Log time: 2018-04-27 15:46:04.859979
VarLogDistupgradeApttermlog:
Log started: 2018-04-27 15:46:02
Log ended: 2018-04-27 15:46:02
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