1

This is the current version I have

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.5 LTS
Release:    16.04
Codename:   xenial

When I try

sudo do-release-upgrade


Error during update 

A problem occurred during the update. This is usually some sort of 
network problem, please check your network connection and retry. 


Restoring original system state

Aborting
Reading package lists... Done    
Building dependency tree          
Reading state information... Done

If I try

ThinkPad-T520:~$ sudo apt-get upgrade
[sudo] password for usernameXYZ: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

-ThinkPad-T520:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.5 LTS Release: 16.04 Codename: xenial

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0

I don't think it is a network problem but perhaps a procedural one.

To upgrade from the command line you need to follow these steps:

Open up a terminal window Ctrl Alt t

Issue the command sudo apt-get upgrade

Enter your user password

Look over the list of available updates and decide if you want to go through with the entire upgrade

To accept all updates click the y key and hit Enter.

Other than that there is a new procedure too... acknowledgements to itsfoss

enter image description here

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  • That didn't work either. I entered the results in the original post above, rather than a comment, so they can be better formatted. But basically I was not offered any potential upgrades, it just didn't find anything. Any ideas? – Baron Yugovich Jul 19 '18 at 17:26
  • Perhaps wait for the point release of 18.04.1 due shortly? – 24601 Jul 19 '18 at 17:39
  • No problem, will do. Any idea when it should be released, and what command I should run to get it? Please add it to your answer above. – Baron Yugovich Jul 19 '18 at 17:44
  • @BaronYugovich I've edited my answer with an alternative approach. The point release is due soon. – 24601 Jul 19 '18 at 18:24
0

Possibly you need to update your 16.04 to the latest state first before doing the upgrade to 18.04, try.

sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
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  • Yes, did all this, same result. Any other idea? – Baron Yugovich Jul 19 '18 at 18:46
  • Since you can perform the steps about error, your network is fine thus far. Let's try this. Start Software & Updates, on the second tab, uncheck everything and exit. Then retry the 3 commands again. – Bernard Wei Jul 19 '18 at 18:55
  • By second tab, you mean Other Software, uncheck everything there? – Baron Yugovich Jul 19 '18 at 18:59
  • Tried it, same result. – Baron Yugovich Jul 19 '18 at 19:05
  • could you post "ip route" (or "ip -6 route" if you are using ipv6), just want to make sure there isn't anything funny there. While you are at this, post "dig ca.archive.ubuntu.com". Also, when you did the "apt-get update" check that it is using using "c.archive.ubuntu.com" – Bernard Wei Jul 19 '18 at 19:16

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