Possibly related to this:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1530405
That bug focuses on the soft lockup but nouveau has come up as a factor.
Possibly related to this:
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1530405
That bug focuses on the soft lockup but nouveau has come up as a factor.