[imglorp]

You can disable automatic updates and instead run them when you want.

[jakear]

Funny thing is I click “not now” or whatever it is when they pop up asking if I want updates, yet it still gets locked.

[imglorp]

If this is an Ubuntu flavor, you can run the "software and updates" program and set "Updates -> Automatically check for updates" to Never.

https://media.howtofix.io/full/images/posts/2020/11/13/16052...

Other distros may vary :)

[jakear]

Thanks, looks like it was set to auto-install security updates and prompt for the others.