I'm aback after my lock screen investigations and have the following info which may help with this issue:
- I finish listening to some music and press pause in DSub (the app, not the lock screen) & press my phone's power button to put it into standby (screen off).
- If I turn my phone on again after a short amount of time, there are no DSub lock screen controls, as expected.
- If I wait about half an hour, and then turn on my phone, there IS a DSub lock screen, not expected.
I then installed Doggcatcher as it's particularly sensitive to audio focus, and started listening to a podcast. After around half an hour audo playback stops and I am notified that Doggcatcher has lost audio focus as detailed here:
http://www.doggcatcher.com/AudioFocusI have sent the Doggcatcher log to myself but it's not conclusive as to which app is taking focus. I may try uninstalling DSub to see if the issue is resolved but haven't done so yet.
I don't know if DSub is taking Audio focus at certain intervals even when not playing but at a guess it might by why the lock screen control appear even when DSub is not playing and I have not used the lock screen controls to pause playback.
Hope this is some help...