Comment 21 for bug 1687623

The linux-4.4.0-77.98 was released to -updates only. It appears that this then lead to it being marked for phased updates. The affected people appear to have phased linux-signed only and not linux and linux-meta. This leads to linux-signed-image-4.4.0-77-generic (and its dependencies) to be installed only. This essentially leaves the user with half a kernel with many drivers missing. This leads to broken internet and the like.

We have phased this update fully to avoid this occurring to any other machines. We have also changed the release process to prevent phased kernel releases in the future. I am creating an update-manager task as this needs to be fixed as there are certainly other packages which could trigger this behaviour.

update-manager should offer a correct fully phased update now once booted into the previous kernel. Also the "apt-get dist-upgrade" solution is valid and will resolve the issue.