I have recently installed Kubuntu 20.10 and since yesterday I am getting following error whenever I am trying to remove or install something from Discover.

You have no authorization to execute this operation

Below is the output when I tried to execute it from the Konsole.

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    [email protected]:~$ lsb_release -r
  Release:        20.10
  [email protected]:~$ uname -a
  Linux Kubuntu 5.8.0-33-generic #36-Ubuntu SMP Wed Dec 9 09:14:40 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
  [email protected]:~$ plasma-discover
  qrc:/qml/Feedback.qml:2:1: module "org.kde.userfeedback" is not installed
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/Theme"
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/LookAndFeel"
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "KWin/Effect"
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "KWin/WindowSwitcher"
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using.

The package type, we assume, is "Plasma/Wallpaper"
  invalid kns backend! "/usr/share/knsrcfiles/servicemenu.knsrc" because: "Config group not found! Check your KNS3 installation."
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/Comic"
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "Plasma/LookAndFeel"
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using. The package type, we assume, is "KWin/Script"
  invalid kns backend! "/usr/share/knsrcfiles/ksysguard.knsrc" because: "Config group not found!

Check your KNS3 installation."
  kf.newstuff.core: Your configuration file uses an old version of the kpackage support, and should be converted. Please report this to the author of the software you are currently using.

The package type, we assume, is "Plasma/Applet"
  adding empty sources model QStandardItemModel(0x5635b65df320)
  QObject::connect(AbstractReviewsBackend, ResourcesModel): invalid nullptr parameter
  org.kde.plasma.libdiscover: Couldn't find a category for  "fwupd-backend"
  file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/globaltoolbar/PageRowGlobalToolBarUI.qml:49:9: QML PrivateActionToolButton: Binding loop detected for property "checkable"
  Fwupd Error:  Remote  vendor-directory has no cache signature!
  percentage cannot be calculated
  percentage cannot be calculated
  percentage cannot be calculated
  percentage cannot be calculated
  percentage cannot be calculated
  percentage cannot be calculated
  percentage cannot be calculated
  percentage cannot be calculated
  percentage cannot be calculated
  PackageKit error: PackageKit::Transaction::ErrorNotAuthorized "You have no authorization to execute this operation" "Failed to obtain authentication."


Can someone please help?

looks like something is missing. You should run the following 3 commands in a konsole to make sure you are up-to-date and nothing is missing or badly configured:

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sudo apt update
sudo apt upgrade
sudo dpkg --configure -a

Mamarok wrote:looks like something is missing. You should run the following 3 commands in a konsole to make sure you are up-to-date and nothing is missing or badly configured:

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sudo apt update
sudo apt upgrade
sudo dpkg --configure -a

Thank you for your reply. I ran the above commands, there were no packages to upgrade and the third command didn't return anything. I am still getting the same error message -> "Failed to get authentication" after opening Discover and "You have no authorization to execute this operation" after clicking on install or remove.

Is there a way I can uninstall and install Plasma Discover again? Would that remove the older configuration and correct the things? If yes, what would be the safe way to uninstall and reinstall?

How do you start Discover? From the menu? Make sure you do not try to start it as root, that wouldn't work

no need to remove it, you can force-reinstall it, that would get back eventual lost dependencies:

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 sudo apt reinstall plasma-discover

Mamarok wrote:How do you start Discover? From the menu? Make sure you do not try to start it as root, that wouldn't work

no need to remove it, you can force-reinstall it, that would get back eventual lost dependencies:

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 sudo apt reinstall plasma-discover

I have tried to open it through the application launcher, desktop shortcut and install button on the KDE website application. In all the cases, I am getting this error message. I have tried to force-reinstall as per the method you have suggested and tried to actually remove and clean install it hoping some configurations file that's messing with this would be removed, but no avail. I am still getting the same error message.

Here are some of the relevant logs entries from Journald.

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14/12/20 8:46 PM   PackageKit   uid 1000 is trying to obtain org.freedesktop.packagekit.package-remove auth (only_trusted:1)
14/12/20 8:46 PM   PackageKit   uid 1000 failed to obtain auth
14/12/20 8:47 PM   snapd   daemon.go:589: gracefully waiting for running hooks
14/12/20 8:47 PM   snapd   daemon.go:591: done waiting for running hooks
14/12/20 8:48 PM   snapd   daemon stop requested to wait for socket activation
14/12/20 8:48 PM   systemd   app-org.kde.discover-ca624c06186a40308f866b218ae9d17e.scope: Succeeded.
14/12/20 8:48 PM   systemd   snapd.service: Succeeded.
14/12/20 8:48 PM   systemd   Started app-org.kde.discover-7c514b9c15ed4a188e59668f40f2ae4a.scope.
14/12/20 8:48 PM   systemd   Starting Snap Daemon...
14/12/20 8:48 PM   snapd   AppArmor status: apparmor is enabled and all features are available
14/12/20 8:48 PM   snapd   daemon.go:347: started snapd/2.48+20.10 (series 16; classic) ubuntu/20.10 (amd64) linux/5.8.0-33-generic.
14/12/20 8:48 PM   systemd   tmp-sanity\x2dmountpoint\x2d555482299.mount: Succeeded.
14/12/20 8:48 PM   systemd   tmp-sanity\x2dmountpoint\x2d555482299.mount: Succeeded.
14/12/20 8:48 PM   snapd   daemon.go:440: adjusting startup timeout by 30s (pessimistic estimate of 30s plus 5s per snap)
14/12/20 8:48 PM   systemd   Started Snap Daemon.
14/12/20 8:48 PM   fwupd   15:18:34:0381 FuEngine             ebitdo failed to change udev device /sys/devices/virtual/block/loop0: cannot ensure ID: FuUdevDevice:
14/12/20 8:48 PM   fwupd   Unknown Device
14/12/20 8:48 PM   fwupd     Flags:                none
14/12/20 8:48 PM   PackageKit   get-updates transaction /709_dcedabbc from uid 1000 finished with success after 490ms
14/12/20 8:48 PM   PackageKit   resolve transaction /710_dcdadbcc from uid 1000 finished with success after 541ms
14/12/20 8:48 PM   PackageKit   resolve transaction /711_baaddcec from uid 1000 finished with success after 541ms
14/12/20 8:48 PM   PackageKit   get-details transaction /712_adbdebeb from uid 1000 finished with success after 338ms
14/12/20 8:48 PM   PackageKit   get-details transaction /713_aebcbedb from uid 1000 finished with success after 351ms
14/12/20 8:48 PM   PackageKit   get-details transaction /714_ebacdbca from uid 1000 finished with success after 349ms
14/12/20 8:48 PM   PackageKit   get-details transaction /715_cbdabada from uid 1000 finished with success after 334ms
14/12/20 8:48 PM   PackageKit   new remove-packages transaction /716_dddbcabb scheduled from uid 1000
14/12/20 8:48 PM   PackageKit   in /716_dddbcabb for remove-packages package clementine;1.4.0~rc1+git174-gcb64d9705+dfsg-2build2;amd64;installed:ubuntu-groovy-universe was removing for uid 1000
14/12/20 8:48 PM   PackageKit   remove-packages transaction /716_dddbcabb from uid 1000 finished with success after 424ms
14/12/20 8:48 PM   PackageKit   uid 1000 is trying to obtain org.freedesktop.packagekit.package-remove auth (only_trusted:1)
14/12/20 8:48 PM   PackageKit   uid 1000 failed to obtain auth
14/12/20 8:48 PM   PackageKit   get-details transaction /718_ddedbbba from uid 1000 finished with success after 330ms
14/12/20 8:48 PM   PackageKit   get-details transaction /719_ceebcaca from uid 1000 finished with success after 333ms
14/12/20 8:49 PM   PackageKit   resolve transaction /720_dadbccce from uid 1000 finished with success after 325ms
14/12/20 8:49 PM   PackageKit   uid 1000 is trying to obtain org.freedesktop.packagekit.system-sources-refresh auth (only_trusted:0)
14/12/20 8:49 PM   PackageKit   uid 1000 failed to obtain auth
14/12/20 8:49 PM   PackageKit   get-updates transaction /722_ccbacaaa from uid 1000 finished with success after 455ms

I fixed it by running following command on Konsole.

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killall chrome-remote-desktop-host

Later on, I completely removed the chrome-remote-desktop package from Synaptics. I think, below command should also work if trying to remove from Konsole.

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sudo apt remove chrome-remote-desktop

Thank you for the solution. I have bumped into similar problem with Discover and removing chrome-remote-desktop solved it.

So I can confirm that remote desktop feature of Chrome is the culprit.