I am not convinced this is a ducplicate of bug #1797945. If I read that report correctly it is about upgraded Thunderbird with the external add- ons used. I *do* have both lightning and gcal provider from the Ubuntu archive (repeating from the description):
xul-ext-lightning:amd64 (1:52.9.1+build3-0ubuntu0.16.04.1, 1:60.2.1+build1-0ubuntu0.16.04.4) xul-ext-gdata-provider:amd64 (1:52.9.1+build3-0ubuntu0.16.04.1, 1:60.2.1+build1-0ubuntu0.16.04.4) ** This bug is no longer a duplicate of bug 1797945 Lightning incompatible with Thunderbird 60.2.1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1798090 Title: Xenial update of thunderbird seems to have broken lightning/gdata provider To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1798090/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs