Thanks for the update. It sounds like the bug is due to an Ubuntu SAUCE patch. Can you test the latest Xenial -proposed kernel?
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed.
If -proposed still has the bug, we can bisect between 4.4.0-21 and 4.4.0-34.
Thanks for the update. It sounds like the bug is due to an Ubuntu SAUCE patch. Can you test the latest Xenial -proposed kernel?
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed.
If -proposed still has the bug, we can bisect between 4.4.0-21 and 4.4.0-34.