Denon CEOL restarts during UPnP playback

Support
1

App version

Production

Issue description

When casting music from Symfonium to my Denon CEOL via UPnP, the CEOL randomly goes into standby and stops playback, even though playback is still active.

This does not happen when using Spotify to play to the same Denon CEOL.

I am using Subsonic as the media provider in Symfonium.

I have already tried changing the UPnP renderer settings, including:

  • Symfonium proxy: enabled
  • UPnP gapless support: disabled
  • UPnP alternative flags: disabled
  • Stop casting on external changes: disabled

The problem still occurs.

After the CEOL restarts, it switches to the “MusicServers” screen.

Device type

Phone

Media provider

Subsonic (Open)

Steps to reproduce

  1. Open Symfonium.
  2. Select music from my Subsonic media provider.
  3. Start playback.
  4. Select Denon CEOL as the UPnP playback device.
  5. Leave playback running.
  6. After some time, the Denon CEOL unexpectedly goes into standby/restarts even though Symfonium is still playing.
  7. After the restart, the CEOL displays the “MusicServers” screen.

Additional information

Spotify does not have this problem when casting to the same Denon CEOL.

The Denon CEOL was not being used by any other application at the time of the incident. MinimServer was not being used for playback either.

Symfonium uses Subsonic as the media provider, and the playback target is the Denon CEOL via UPnP.

I also tried enabling “Symfonium proxy”, but the issue still occurred.

The CEOL appears to restart rather than simply stopping playback, because after the restart it displays the “MusicServers” screen.

I searched existing issues first

on

I understand that logs are mandatory

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Log upload name / description

Denon CEOL restarts during UPnP playback

2

Spotify does not cast to those devices, those devices have special code to read from the servers it’s not upnp.

In the logs the device drop the connection without a reason. If it also happen without Symfonium as proxy then there’s not much I can do.

If it works when casting files stored locally on your phone then there’s something the device does not like about your server connection.

3

Thank you for your reply and for checking the logs.

It also happens when casting a local file stored on my phone to the Denon CEOL.

So the issue is not specific to my Subsonic server connection.

I also tested with Symfonium proxy enabled, and the CEOL still restarts.

The same issue occurs with:

  • Subsonic playback
  • Local files stored on the phone

In both cases, the Denon CEOL restarts during playback and returns to the “MusicServers” screen.

Could this indicate a UPnP compatibility issue between Symfonium and the Denon CEOL?

4

UPnP is a very basic protocol, once the playback start then all have worked, if the device stop playbacks in the middle it’s something on the device doing this.

The logs shows no command or anything unwanted send to the device.

Maybe you can enable Chromecast on those device ?