As far as I am able to determine, this has been resolved for me by following the steps in the comments of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2017227 .
As far as I am able to determine, this has been resolved for me by following the steps in the comments of https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/2017227 .