Ubuntu is overheating my laptop

[DJ]

Ubuntu is overheating my laptop.
Same problem as 1768976
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1768976

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.21
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: communitheme:ubuntu:GNOME
Date: Sat Jul 28 01:35:57 2018
InstallationDate: Installed on 2016-06-11 (776 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: Upgraded to bionic on 2018-07-27 (0 days ago)
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: communitheme:ubuntu:GNOME
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2016-06-11 (776 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
NonfreeKernelModules: nvidia_modeset nvidia
Package: ubuntu-release-upgrader (not installed)
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Tags: bionic dist-upgrade
Uname: Linux 4.15.0-29-generic x86_64
UpgradeStatus: Upgraded to bionic on 2018-07-27 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True

[DJ (dj-dj)]

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[DJ (dj-dj)]

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[DJ (dj-dj)]

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[DJ (dj-dj)]

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[DJ (dj-dj)]

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[DJ (dj-dj)]

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[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.18 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.18-rc7

[DJ (dj-dj)]

Did this issue start happening after an update/upgrade? - YES

Was there a prior kernel version where you were not having this particular problem? - YES, 4.4 in Ubuntu 16 stable.

Would it be possible for you to test the latest upstream kernel? - Maybe next week only :(

Problem is with NVIDIA drivers - I purged them out now and NB temperature is normal now, but bad graphics :(

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[indigocat (indigocat)]

Related to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1768976