diff -ur '--exclude=*~' '--exclude=*pycache*' gphotoframe-2.0.2-hg2084299dffb6/lib/dbus/idlecheck.py gphotoframe-2.0.2-hg2084299dffb6.new/lib/dbus/idlecheck.py

--- gphotoframe-2.0.2-hg2084299dffb6/lib/dbus/idlecheck.py	2019-08-21 01:34:09.000000000 +0900

+++ gphotoframe-2.0.2-hg2084299dffb6.new/lib/dbus/idlecheck.py	2021-03-16 12:39:35.187129612 +0900

@@ -1,6 +1,8 @@

 import sys

+import re

 from gi.repository import Gio

+from gi.repository import GLib

 from ..utils.gnomescreensaver import is_screensaver_mode

@@ -9,6 +11,9 @@

     def __init__(self):

         self.is_screensaver = is_screensaver_mode()

+        self.is_service_active = True

+        self.service_known_times = 0

+        self.pattern_service_unknown = re.compile(r"org\.freedesktop\.DBus\.Error\.ServiceUnknown")

         try:

             bus = Gio.bus_get_sync(Gio.BusType.SESSION, None)

@@ -24,9 +29,17 @@

         status = False

         try:

-            status = False if self.is_screensaver else self.proxy.GetActive()

+            status = False if self.is_screensaver else ( self.is_service_active and self.proxy.GetActive() )

         except AttributeError:

             pass

+        except GLib.Error:

+            errormsg = str(sys.exc_info()[1])

+            print ("Exception: %s" % errormsg)

+            if self.pattern_service_unknown.search(errormsg):

+                self.service_known_times += 1

+                if self.service_known_times >= 3:

+                    print ("Disabling idle status polling.")

+                    self.is_service_active = False

         except:

             print ("Exception: %s" % sys.exc_info()[1])