SUMMARY Muon asks for root password on system with sudo when trying to launch software-properties-kde, so one can't launch this utility. It does that even when root account is locked. STEPS TO REPRODUCE 1. Launch Muon 2. Go to settings -> Configure software sources 3. Observe that Muon launches KDE su. When I try to provide my own password (because root account is locked and I have sudo configured), I can't launch software-properties-kde OBSERVED RESULT One can't launch software-properties-kde from Muon EXPECTED RESULT One can launch software-properties-kde from Muon SOFTWARE/OS VERSIONS Operating System: Kubuntu 22.04 KDE Plasma Version: 5.24.5 KDE Frameworks Version: 5.93.0 Qt Version: 5.15.3 Kernel Version: 5.16.19-76051619-generic (64-bit) Graphics Platform: X11 Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz Memory: 31.2 GiB of RAM Graphics Processor: Mesa Intel® Xe Graphics ADDITIONAL INFORMATION Kubuntu backports PPA enabled
This is a bug in software-properties-kde itself, which comes from Ubuntu.