After wakeup temp1 always at 85°, fan keeps spinning at max

[Joe Mau]

dmesg | grep -A 5 -B 5 Warning
....
[ 1340.396843] PM: Finishing wakeup.
[ 1340.396846] OOM killer enabled.
[ 1340.396847] Restarting tasks ... done.
[ 1340.552543] thermal thermal_zone13: failed to read out thermal zone (-5)
[ 1340.553242] bbswitch: disabling discrete graphics
[ 1340.553261] ACPI Warning: \_SB.PCI0.RP01.PXSX._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20170531/nsarguments-95)
[ 1341.163764] psmouse serio3: synaptics: queried max coordinates: x [..5646], y [..4676]
[ 1341.194980] psmouse serio3: synaptics: queried min coordinates: x [1294..], y [1178..]
[ 1341.197777] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 1341.198100] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready
[ 1341.219856] r8169 0000:02:00.0 enp2s0: link down

Happens when power is on a/c at time of wakeup via hw button.

Otherwise, if a/c is plugged out before wakeup via hw button, issue does not occur.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.13.0-43-generic 4.13.0-43.48~16.04.1
ProcVersionSignature: Ubuntu 4.13.0-43.48~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-43-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Jan 6 18:19:19 2019
InstallationDate: Installed on 2018-02-13 (326 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: linux-hwe
UpgradeStatus: No upgrade log present (probably fresh install)