This seems to be a dupe of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1680904. While this report predates the other, it's the other that has more current info on a resolution.
This seems to be a dupe of https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1680904. While this report predates the other, it's the other that has more current info on a resolution.