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I am wanting to update from Ubuntu 20.10 to 21.04.

When I first tried I was getting an error:

W: GPG error: http://ddebs.ubuntu.com groovy Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <[email protected]>
E: The repository 'http://ddebs.ubuntu.com groovy Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ddebs.ubuntu.com groovy-updates Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <[email protected]>
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ddebs.ubuntu.com groovy-proposed Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <[email protected]>

Which seems that the key has expired. (Shrug)

I fixed it by doing this:

sudo apt install --reinstall ubuntu-dbgsym-keyring

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F2EDC64DC5AEE1F6B9C621F0C8CAB6595FDFF622

sudo apt-get update

But it only got rid of that part.

When I try to sudo dist-upgrade this happens:

 sudo apt dist-upgrade 
[sudo] password for me: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  dh-python
0 to upgrade, 0 to newly install, 0 to remove and 1 not to upgrade.

So I don't understand why it isn't updating to 21.04

Please, someone. Thanks in advance.

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  • Again I am not understanding the mechanics of posting questions and follow up posts on/in this forum. I DID click the Up arrow as you said. We had maybe better leave things as they are now or we will only be further making things confusing.
    – Recently Updated Ubuntu user
    Commented Jul 12, 2021 at 21:23

1 Answer 1

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You're not using the correct command.

The command you should run is sudo do-release-upgrade .

apt dist-upgrade is something entirely different.

See: What is "dist-upgrade" and why does it upgrade more than "upgrade"?

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  • Ok, very much thanks. But when I do that I am told to update the distro first. I do the sudo apt update and it says 1 can be upgradable. When I try to upgrade it: nothing happens, and so I can't get it working.
    – Recently Updated Ubuntu user
    Commented Jul 12, 2021 at 6:51
  • Ah! This is the link link and I got stuck at the dist-upgrade part and looked further down and the do-dist-upgrade command is there. I just didn't get to that part because of the error.
    – Recently Updated Ubuntu user
    Commented Jul 12, 2021 at 7:42
  • Is dh-python still the package that is being held back? Can you try sudo apt-get install --reinstall dh-python? You also need to make sure that all PPAs and non-official sources are removed.
    – Nmath
    Commented Jul 12, 2021 at 17:17

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