I found a temporary workaround by running a terminal window to edit the repository sources: sudo gedit et/c/apt/sources.list
** Changed in: synaptic (Ubuntu) Status: Invalid => Confirmed -- Trying to fix a broken repository. Clicking "software sources" from administration menu doesn't do anything, and also Repositories from the Synaptic menu doesn't do anything either. https://bugs.launchpad.net/bugs/580792 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs