Previously it was told that it is bad idea to use
sudo to launch GUI-based applications.
So one should use
I remembered it, so I tried this to launch Kubuntu Driver Manager on Kubuntu 20.04 LTS using terminal as
But this command does not work, it crashes with the following output:
qt.qpa.xcb: could not connect to display qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: wayland-org.kde.kwin.qpa, dxcb, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb. Aborted (core dumped)
I have recently reported bug 1885615. But I'm very surprised with this behavior. And what is interesting
sudo kubuntu-driver-manager works normally.
I still can launch Gtk-based applications on Kubuntu using
pkexec - commands like
pkexec pluma results in opening the application with root rights.
So my question is in the title.