It seems that you have got some file system issues on your system. Please try to re-install the python3-gi package
** Changed in: software-properties (Ubuntu) Status: Confirmed => Invalid ** Changed in: aptdaemon (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1055190 Title: Software-properties-gtk does not start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/aptdaemon/+bug/1055190/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs