it seems a python2/3 issue: it runs typing:
$ python2 /usr/bin/displaycal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1858008 Title: DisplayCAL not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dispcalgui/+bug/1858008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs