According to https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-ubuntu-16-04-lts It says we need to wait until 16.04.1 is released if upgrading from 14.04. If I upgrade will the kernel be the correct version?
Thank you, Kurt
It is recommended to wait until 16.04.1 before updating from 14.04. However I recently updated by servers to 16.04 and didn't have any issues.
Make sure to update your kernel before updating to 16.04, you can do that by running the commands below.
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
Once you have done that, run the the command sudo do-release-upgrade. But as always, take a snapshot of the server before the upgrade so you have a method of recovery if it doesn't work.
I did all of that but sudo do-release-upgrade just gives
Checking for a new Ubuntu release
No new release found
@kurtharnish
do-release-upgrade checks this page: http://changelogs.ubuntu.com/meta-release-lts
That page gets updated 1 week after the point release. Meaning sometime yesterday. You should be able to upgrade today.
BUT:
I just upgraded my 14.04.4 LTS and it went horribly wrong. Many errors on boot and a read only filesystem. Before the upgrade I did a full update/upgrade as @MDS suggests. I had to revert to a snapshot and currently have no idea what went wrong. There where no errors during upgrade, but everything failed after the reboot.
Maybe someone has some suggestions on what I might have done wrong?
Do you have a copy of the errors that you received on boot? It most likely something with grub or your kernel.
No, sadly. I'm not sure how I could have collected those either? And since the filesystem was read only and my keyboard via the console was wrong (I couldn't find a way to type pipe for instance) it was quite hard to work with.
I also suspect that there might have been an issue with the kernel. I'm not really sure how you should "prepare the kernel" for the upgrade/when you should change it in the control panel here at DO?
I just noticed that others also mention read only filesystems in the comment section of the article @kurtharnish mentions:
https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-ubuntu-16-04-lts
What kernel version are you using? You can find it by running the command uname -r.
And did you update grub config during the update?
I actually don't think the problem was with the kernel.
Fixes after upgrading is mentioned in this comment:
https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-ubuntu-16-04-lts?comment=46142
I haven't had the time to try it myself though.
In my opinion, you should do a clean install. In the whole history of ubuntu (since 05.10), there are only a very few working upgrades. Especially the upgrade path 12.04 -> 14.04 -> 16.04 doesn't work (for me). I think, only a fresh installed, otherwise unused system is needed for a working upgrade process. I tried to upgrade several systems (about 10 computers) and every system ended up in a fresh installation. Half of them crashed during do_release-upgrade or upgrade by gui. :-(