blush :-/ After not finding a kernel where it worked I finally tried on another computer, running Windows - and it didn't work either.
So it looks like a hardware issue that possibly occured at about the same time as the update. Sorry to have wasted your time. ** Changed in: linux (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1590125 Title: Middle mouse (wheel-click) button stopped working after upgrade to 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1590125/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs