Could you try upgrading to the newer 4.8.0-17.19 kernel that was promoted to the release pocket last night:
https://launchpad.net/ubuntu/+source/linux/4.8.0-17.19
Alternatively, you could retest with the latest image here that now contains this newer kernel as well:
http://cdimage.ubuntu.com/ubuntu-server/daily/20160927/
Please do let us know your results.
Could you try upgrading to the newer 4.8.0-17.19 kernel that was promoted to the release pocket last night:
https:/ /launchpad. net/ubuntu/ +source/ linux/4. 8.0-17. 19
Alternatively, you could retest with the latest image here that now contains this newer kernel as well:
http:// cdimage. ubuntu. com/ubuntu- server/ daily/20160927/
Please do let us know your results.