Before sending the logs with Apport I have removed all USB printers not concerned by the bug, connected only the CM3530, started system-config-printer and clicked "Add" to trigger a printer detection run by CUPS.
Before sending the logs with Apport I have removed all USB printers not concerned by the bug, connected only the CM3530, started system- config- printer and clicked "Add" to trigger a printer detection run by CUPS.