I'm experiencing this on Buster Running from terminal as suggested by launchpad thread yields this output (I forgot about it and left it for a few hours so it loops)
✘ ~ ≻≻≻ caffeine INFO:root:caffeine is inhibiting desktop idleness org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness INFO:root:caffeine is inhibiting desktop idleness Protocol error: bad 3 (Window); Sequence Number 11 Opcode (20, 0) = GetProperty Bad resource 0 (0x0) at -e line 15. INFO:root:caffeine is no longer inhibiting desktop idleness
