diff -up hplip-3.20.3/base/tui.py.keyserver hplip-3.20.3/base/tui.py
--- hplip-3.20.3/base/tui.py.keyserver	2020-03-10 09:01:53.000000000 +0100
+++ hplip-3.20.3/base/tui.py	2020-04-07 08:44:44.319710001 +0200
@@ -241,6 +241,7 @@ class ProgressMeter(object):
         sys.stdout.write(y)
 
         sys.stdout.flush()
+        sys.stdout.write('\n')
         self.prev_length = len(y)
         self.spinner_pos = (self.spinner_pos + 1) % 8
 
diff -up hplip-3.20.3/base/validation.py.keyserver hplip-3.20.3/base/validation.py
--- hplip-3.20.3/base/validation.py.keyserver	2020-03-10 09:01:53.000000000 +0100
+++ hplip-3.20.3/base/validation.py	2020-04-07 08:45:46.657132415 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 # -*- coding: utf-8 -*-
 #
 # (c) Copyright 2015 HP Development Company, L.P.
@@ -42,8 +42,11 @@ class DigiSign_Verification(object):
 
 
 class GPG_Verification(DigiSign_Verification):
-    def __init__(self, pgp_site = 'pgp.mit.edu', key = 0x4ABA2F66DBD5A95894910E0673D770CDA59047B9):
-        self.__pgp_site = pgp_site
+    def __init__(self, keyservers = ['pool.sks-keyservers.net',
+                                     'keyserver.ubuntu.com',
+                                     'sks-keyservers.net', 'pgp.mit.edu'],
+                 key = 0x4ABA2F66DBD5A95894910E0673D770CDA59047B9):
+        self.__keyservers = keyservers
         self.__key = key
         self.__gpg = utils.which('gpg',True)
 
@@ -82,13 +85,18 @@ class GPG_Verification(DigiSign_Verifica
 
 
     def __acquire_gpg_key(self):
-
-        cmd = '%s --homedir %s --no-permission-warning --keyserver %s --recv-keys 0x%X' \
-              % (self.__gpg, self.__gpg_dir, self.__pgp_site, self.__key)
-
-        log.info("Receiving digital keys: %s" % cmd)
-        status, output = utils.run(cmd)
-        log.debug(output)
+        for kserver in self.__keyservers:
+            cmd = '%s --homedir %s --no-permission-warning --keyserver %s --recv-keys 0x%X' \
+                  % (self.__gpg, self.__gpg_dir, kserver, self.__key)
+
+            log.info("Receiving digital keys: %s" % cmd)
+            status, output = utils.run(cmd)
+            log.debug(output)
+
+            if not status:
+                break
+            log.info("Receiving keys from {} failed, trying the next keyserver."
+                     .format(kserver))
 
         self.__change_owner(True)