According to the error messages, might this be a duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1568573 ? Do you need any further information to hunt down this bug?
According to the error messages, might this be a duplicate of https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1568573 ? Do you need any further information to hunt down this bug?