unity8.log spammed: Failed to get current playback position: org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

[Vincas Dargis]

BQ E5, OTA-12.

I've noticed that my ~/.cache/upstart/unity8.log contains lot's of these messages, filled every second (file is around 6 Megs at time of writing):

[2016-35-10:11:35:07.388] Failed to get current playback position: org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

[2016-35-10:11:35:08.388] Failed to get current playback position: org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

[2016-35-10:11:35:09.388] Failed to get current playback position: org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

I do not know what produces these, or since when it has started. These lines starts from beginning of log file, I cannot trace that event / app that started it.

I've just rebooted, and these messages have stopped.

There was no other app, except terminal where I was debugging, launched, no musig playing, etc.

[Albert Astals Cid (aacid)]

Jim, those seem to be coming from qtubuntu-media

[Jim Hodapp (jhodapp)]

This happens when media-hub-server has crashed or become unresponsive in some way, either because the current player session over dbus has hung or because the system load is very high for some reason. Can you clear out the crash files in /var/crash, then the next time you notice this do the following:

1. Attach the crash file(s) for media-hub here
2. Attach the media-hub log file from /home/phablet/.cache/upstart/media-hub.log
3. See if you're able to play music from music-app when you're getting these messages.

[Vincas Dargis (talkless)]

Thanks for info, I'll try.

[Vincas Dargis (talkless)]

There is one .crash file, though log was not spammed.

[Jim Hodapp (jhodapp)]

You'll want to try again with OTA-13 once it's released. My hunch is that it will greatly help in reducing this issue as various system components will now be able to reconnect to media-hub-server after a crash.

[Launchpad Janitor (janitor)]

[Expired for media-hub (Ubuntu) because there has been no activity for 60 days.]