[PLUG] Xubuntu 18.04 -- Software Updater Problem

[Lou]

What a coincidence! A friend who is running Ubuntu 18.04 in his laptop 
also had the same problem. The update manager said that there is no 
Internet when there was a working Internet connection.

So, I just opened the terminal for him, and typed

  sudo apt update && sudo apt dist-upgrade

and run the update through the Terminal, and it worked.

I am not running Ubuntu 18.04, but I suspect there was some kind of 
regression or new bug introduced in last update. This is just a guess 
based on my friend's and your experience.

On 4/24/20 9:57 PM, Dick Steffens wrote:
> When I run Software Updater on one of my Ubuntu 18.04 machines 
> (ENU-1). In April, 2018, I installed Ubuntu MATE 18.04. At some point, 
> alas not documented, I switched to XFCE. In May, 2019, I installed 
> Xubuntu 18.04 on my other desktop machine (ENU-2), and migrated to it 
> for daily use. ENU-1 just sits over on the other desk and quietly 
> runs. I never got around to moving my in-house web setup to ENU-2, so 
> ENU-1 is doing something. But usually I just forget that it's there.
>
> Today I wanted to change something on an in-house web page and looked 
> at its monitor. There was a notice of software upgrades being 
> available. I did the change I needed to do, and then tried to run 
> Software Updater. I get an error message:
>
> Failed to download repository information
> Check your Internet connection.
>
> The Internet connection is fine.
>
> The error dialog box has a button for Settings. After stepping through 
> all the tabs, but not seeing anything useful, I closed the Settings 
> box, and the main Software Updater box filled up with all the stuff 
> that needs updating. I click on Install Now, the box briefly changes 
> to the one that shows progress of the install, but then disappears. No 
> further error message.
>
> Where do I start to troubleshoot this?
>
> Thanks.
>