Comment 16 for bug 1797209

I am not happy with the state of this in 16.04: I do 'sudo do-release-upgrade' in the anticipation of getting 18.04.1, and I get instead

'Checking for a new Ubuntu release
Please install all available updates for your release before upgrading.'

even if I have just run sudo apt-get update; sudo apt-get upgrade.

I am *not* in the habit of rebooting my machine after updates:

oak@oak:~$ uptime
 13:01:09 up 260 days, 18:06, 12 users, load average: 20.53, 20.91, 21.40

but the message does *not* suggest that the reason it won't let me do-release-upgrade is that there is a reboot pending.

Indeed, even after a reboot and sudo apt-get update; sudo apt-get upgrade I get the same message.

oak@oak:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.5 LTS"