Comment 9 for bug 1818629

I'm really not an expert myself, just a struggling fellow user ;-)

It appears that you are right and pgp.mit.edu is down at present or only responding occasionally.

There's a web interface as well at https://pgp.mit.edu/ and my searches for 0x4ABA2F66DBD5A95894910E0673D770CDA59047B9 and 0xA59047B9 returned a result once and many errors.

Then I just gave it a whirl on a different public key server and was able to receive the keys:

$ /usr/bin/gpg --keyserver pool.sks-keyservers.net --recv-keys 0xA59047B9

and

$ /usr/bin/gpg --homedir /home/YOUR-USERNAME/.hplip/.gnupg --no-permission-warning --keyserver pool.sks-keyservers.net --recv-keys 0x4ABA2F66DBD5A95894910E0673D770CDA59047B9

did receive and import the HPLIP keys for me just now.

I don't know if hp-setup will then see the existing key in Gnome keyring and be happy or still try to receive the key from pgp.mit.edu and fail again, and I'm not going to touch my setup now that my printer is finally working, but I guess it's worth a shot to import the keys manually and then re-run hp-setup and see what happens.

Hope this helps!