[Bug 1908456] [NEW] Plasma system monitor sensor widget fails to load sensors after reboot

[Wayne Schroeder]

Public bug reported:

This may be raspberry pi specific.  When selecting system sensors for a
line graph such as core temperature or core frequencies, upon
reboot/login the sensors do not register until you open the
configuration for the widget and at least open the sensors detail tab.
Additionally, this tab is extremely slow the first time you click it
(and after reboot).  If you have two of these widgets going that have
missing sensor data, the act of going into the details and enduring the
slowness will make both of the widgets work on the next log-in.  It is
my assumption that it is doing something system wide like creating
devices or loading modules directory or indirectly, but whatever the
reason, after one widget config visits the sensors detail tab, they all
work immediately after successive logout/login.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: plasma-workspace 4:5.19.5-0ubuntu2
ProcVersionSignature: Ubuntu 5.8.0-1010.13-raspi 5.8.17
Uname: Linux 5.8.0-1010-raspi aarch64
ApportVersion: 2.20.11-0ubuntu50.3
Architecture: arm64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Wed Dec 16 15:47:00 2020
ExecutablePath: /usr/bin/plasmashell
ImageMediaBuild: 20201022
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: plasma-workspace
UpgradeStatus: No upgrade log present (probably fresh install)
XsessionErrors:
 (tracker-miner-fs:2024): Tracker-CRITICAL **: 09:43:02.257: Could not request DBus name 'org.freedesktop.Tracker1.Miner.Files': D-Bus service name:'org.freedesktop.Tracker1.Miner.Files' is already taken, perhaps the application is already running?
 (tracker-extract:2020): Tracker-CRITICAL **: 09:43:03.035: Could not request DBus name 'org.freedesktop.Tracker1.Miner.Extract': D-Bus service name:'org.freedesktop.Tracker1.Miner.Extract' is already taken, perhaps the application is already running?
 (tracker-miner-fs:1687): Tracker-CRITICAL **: 12:28:50.140: Could not request DBus name 'org.freedesktop.Tracker1.Miner.Files': D-Bus service name:'org.freedesktop.Tracker1.Miner.Files' is already taken, perhaps the application is already running?
 (tracker-extract:1690): Tracker-CRITICAL **: 12:28:51.743: Could not request DBus name 'org.freedesktop.Tracker1.Miner.Extract': D-Bus service name:'org.freedesktop.Tracker1.Miner.Extract' is already taken, perhaps the application is already running?

** Affects: plasma-workspace (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug arm64 groovy third-party-packages

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https://bugs.launchpad.net/bugs/1908456

Title:
  Plasma system monitor sensor widget fails to load sensors after reboot

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