I followed Guy Begin's advice (thanks!) and I can confirm that it does solve the issue for me.
The issue persisted through at least two kernel updates. Currently running:
Linux hermes 4.4.0-38-generic #57~14.04.1-Ubuntu SMP Tue Sep 6 17:20:43 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
I followed Guy Begin's advice (thanks!) and I can confirm that it does solve the issue for me.
The issue persisted through at least two kernel updates. Currently running:
Linux hermes 4.4.0-38-generic #57~14.04.1-Ubuntu SMP Tue Sep 6 17:20:43 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux