Since yesterday every time I try to download something from KDE Discover on Kubuntu 20.04 I get the following error.
You have no authorization to execute this operation
The only way to download software is from the terminal which works without any issue.
You are missing polkit-kde-agent-1 . Here is the package info I got with sudo apt show polkit-kde-agent-1 :
Package: polkit-kde-agent-1
Version: 4:5.18.4.1-0ubuntu1
Priority: optional
Section: universe/kde
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Debian/Kubuntu Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 430 kB
Provides: polkit-1-auth-agent
Depends: policykit-1, libc6 (>= 2.4), libkf5coreaddons5 (>= 4.100.0), libkf5crash5 (>= 4.96.0), libkf5dbusaddons5 (>= 4.97.0), libkf5i18n5 (>= 4.97.0), libkf5iconthemes5 (>= 4.96.0), libkf5widgetsaddons5 (>= 5.36.0+git20170804), libkf5windowsystem5 (>= 5.62.0), libpolkit-qt5-1-1 (>= 0.112.0), libqt5core5a (>= 5.12.2), libqt5dbus5 (>= 5.9.0~), libqt5gui5 (>= 5.9.0~) | libqt5gui5-gles (>= 5.9.0~), libqt5widgets5 (>= 5.9.0~), libstdc++6 (>= 4.1.1)
Breaks: polkit-kde-1 (<< 5.1.95~)
Replaces: polkit-kde-1 (<< 5.1.95~)
Homepage: https://projects.kde.org/projects/kde/workspace/polkit-kde-agent-1
Task: kubuntu-desktop, lubuntu-desktop
Download-Size: 54,7 kB
APT-Manual-Installed: no
APT-Sources: http://de.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
Description: KDE dialogs for PolicyKit
PolicyKit is an application-level toolkit for defining and handling the policy
that allows unprivileged processes to speak to privileged processes.
.
It is a framework for centralizing the decision making process with respect to
granting access to privileged operations (like calling the HAL Mount() method)
for unprivileged (desktop) applications.
.
PolicyKit-Kde provides a D-Bus session bus service that is used to
bring up authentication dialogs used for obtaining privileges.
You should also take a look at the Debian info page for more information and a nicer representation of the info above.
If you feel confident enough to install it use
sudo apt-get update
sudo apt-get install polkit-kde-agent-1
Make sure to check all the dependecies afterwards!
If you don't feel confident enough to do so you could also change the Discover shortcut to open with sudo. But beware that it will not prompt you for a password confirmation before intalling or updating from Discover. It will open Discover as root which is NOT recommended.
To do so it is easies to
you can copy this
sudo plasma-discover %F
If you have chrome-remote-desktop installed, this might be the result of a conflict. Try:
killall chrome-remote-desktop-host
sudo apt remove chrome-remote-desktop
Answer originated from KDE Forum.
Also just a hint for anyone seeing this having the same issue... make sure that you are using the Discover from the menu and not an instance that has been launched by another program. It wont work.
