Reading back I see I haven't really done all I should, but a complete commit bisect may well be beyond the limits of my knowledge and time. On the other hand: last weekend I received an update to kernel 4.4.0 and that does seem to solve the issue. I can now suspend/resume on 4.4.0-31-generic as well as on 4.6.4 from mainline.
cheers Tom -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1595935 Title: Suspend not working on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1595935/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs