Hello and thanks to Martin to open the Bug report and doing all the research as well thanks to the launchpad team!
I got the same problem with Ubuntu 16.04 on my private and my office laptop (T440s and T440 on an ultra dock). Upgrading the dock's firmware didn't help, too. It would be nice to get a solution some time. If I can help with any data, let me know. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1582414 Title: No HDMI audio on Lenovo pro dock with T440s To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1582414/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs