21.04 Upgrade Will Not Install

**SpikeLS6** · June 16th, 2021

Code:

Reliable Network: Xfinity.com (Comcast cable) Yes
Fixed broken packages; used all the commands you gave me and all seemed to work & complete successfully.
By sources, do you mean in Software & Updater?
  Ubuntu Software: All checked using server for United States; Source Code unchecked
  Other Software: Recommended Updates Checked (Source Code)
                            Recommended Updates Checked (Source Code)
                            Recommended Updates Checked (Source Code)
                            Cononical Partners
                            Cononical Partners (Source Code)
                            Important Security Updates (Source Code)
                            Important Security Updates (Source Code)
                            Important Security Updates (Source Code)
  Updates: All Updates
                 Daily
                 Download and install automatically
                 Display Immediately
                 For any new version

**SpikeLS6** · June 16th, 2021

Tried to Upgrade from Software Updater; wanted me to Refresh the data base repository. That Errored, but I was unable to copy it to send it. I closed that window and the Upgrade came up which I started. It Errored loading file 151 of 195.

**MAFoElffen** · June 16th, 2021

If you did from a terminal... an apt cache refresh is

Code:

sudo apt-get update

The do

Code:

sudo do-release-upgrade -d

**SpikeLS6** · June 17th, 2021

Did everything again. The Upgrade came up which I started. It Errored loading file 151 of 195. My laptop did the same thing loading file 207 of 214.

I have a screen shot of the errors from the refresh. How do I get a screen shot to the forum that ends in .png?

**CharlesA** · June 17th, 2021

Originally Posted by SpikeLS6

Did everything again. The Upgrade came up which I started. It Errored loading file 151 of 195. My laptop did the same thing loading file 207 of 214.

I have a screen shot of the errors from the refresh. How do I get a screen shot to the forum that ends in .png?

There should be a section that says "Manage Attachments" on the reply screen. You can attach files there and then add them to your post.

**SpikeLS6** · June 17th, 2021

Attached file "Screen Shot from 2021-6-17 12-32-26.png.

These are the errors both the PC and Laptop get when Refreshing the Date Base from Software Updater.

**CharlesA** · June 17th, 2021

It's pretty strange to get this error unless you are missing the public key to validate the package index.

Are you able to run this command and post the output?

Code:

apt-key list

I ran this on a 18.04 machine that I have running and this is what it says for that key. Check if you have something similar.

Code:

/etc/apt/trusted.gpg.d/ubuntu-keyring-2012-archive.gpg
------------------------------------------------------
pub   rsa4096 2012-05-11 [SC]
      790B C727 7767 219C 42C8  6F93 3B4F E6AC C0B2 1F32
uid           [ unknown] Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@ubuntu.com>

**MAFoElffen** · June 17th, 2021

Now we are getting somewhere...

If from CharlesA's post, if that key is not there (which it does say it was missing), then you can add it via:

Code:

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys  3B4FE6ACC0B21F32

Please verify that is the key it says in your error. Just to make sure I didn't typo that...

Then verify it received it in the keyring

Code:

apt-key list

And yes, that is very weird that, what should be a default public key is missing???

**SpikeLS6** · June 22nd, 2021

The advice on #27 and the Entry on #28 Solved the issue; both the PC and the Laptop installed 21.04 without a burp. I will show this thread SOLVED. Thank you to all who helped.