Okay. After I figured out, that the problem has something to do with the configuration files stored in my home folder (as the lens worked in the guest session!), I deleted the /home/<user>/.config/dconf/ folder. Obviously, this is not the best/neatest solution because this killed pretty much settings (theme, icon set, background image, unity launcher, keyboard shortcuts and so on), but the lens does work very well now. It seems that the erasure of the dconf(iguration) solved many minor problems on my system as well. Its sad, but I think its probably a good idea to delete the configuration in the home folder if you want to update ubuntu...
tl;dr: The problem seems to be fixed for me now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/971473 Title: Unity video lens not showing online sources To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/971473/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs