Tracking Ubuntu kernel issue (revealed in Travis CI update to 5.0.0 kernel): https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1857257

When this is resolved either via Canonical or Travis changes, we will want to re-enable the test disable done under PR #3898 (and cherry-picked via other PRs to release branches).

Thanks to @adrianreber for the upstream report/status.