The error message clearly states, that kde tries to write to a file in the root directory of the system and not in any home directories.
Let's track down where the $HOME variable substitution gets lost in between. Attached we see an other flavor of this message with only one slash where a tilde or path to the home directory should be visible: [1] kde-debconf-helperrc.jpeg ** Attachment added: "kde-debconf-helperrc.jpeg" https://bugs.launchpad.net/ubuntu/+source/kde-runtime/+bug/1851573/+attachment/5497447/+files/kde-debconf-helperrc.jpeg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1851573 Title: configuration file //.config/debconf-kde-helperrc not writable To manage notifications about this bug go to: https://bugs.launchpad.net/kde-runtime/+bug/1851573/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs