Upstream work which might help, although it's about using the smbspool krb5 wrapper, it also has changes to the smbspool binary:
https://gitlab.com/samba-team/samba/merge_requests/961 ** Summary changed: - error when connecting to smb server + smb printing fails -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1849859 Title: smb printing fails Status in cups package in Ubuntu: Confirmed Status in samba package in Ubuntu: Confirmed Status in system-config-printer package in Ubuntu: Confirmed Bug description: when I connect to smb server (nas) permanently appears "Error while getting peer-to-peer dbus connection: Operation was cancelled" The printer at this NAS doesn't work too. "held for authentication KeyError: 'auth-info-required'" The same printer at usb port works fine. Ubuntu development version 20.04 system-config-printer version 1.5.11-4ubuntu1 smbclient version 2:4.10.7+dfsg-0ubuntu3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1849859/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
