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I have air gapped systems with Ubuntu 22.04 desktop. I get a red circle exclamation point. If I click, I get "the update information is outdated. This may be caused network problems or ..."

The problem is that these computers should never be connected to the Internet and updated. Using a mirror also isn't an option. Using apt-offline isn't an option. The computer is supposed to remain isolated -- no network, no USB but does have a KB, mouse and RS-232 serial to a lab device.

My research has only found solutions that involve connecting to the Internet, disabling repos no longer available, fixing broken packages, etc. None of those fit the problem.

I also tried seeing if the message could be disabled from its own menu. After clicking the icon, I selected preferences. This results in the program crashing. That temporarily gets rid of the annoying icon but it will return in a few days.

What I want is for the alert/message to go away and never come back.

Hugh McCurdy
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  • Try finding the path to the executable that is crashing, finding the package that provides it, then uninstalling that package? – Daniel T Feb 05 '24 at 14:06
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    Did you disable or set the Automatically check for updates: to Never in the Software & Updates -> Updates tab in settings? Have you checked all of the software preferences to not have Automatic Updates enabled like in GNOME Software? – Terrance Feb 05 '24 at 15:09
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    Why is it not suitable to just remove all referecnces to all respositories in your sources.list and sources.list.d/*.list files, as you imply. Surely this is precisely the right way to disable all updates, by disabling all repos. – popey Feb 05 '24 at 15:22
  • Thanks Terrance. Was already set to Never. I'm not aware of every other place to check. | Thanks popey. I had already tried that too. – Hugh McCurdy Feb 07 '24 at 18:30
  • See my simple answer at https://askubuntu.com/a/1503093/1004020 – Daniel T Feb 10 '24 at 15:42

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