[Resolved] Project playing to only left speaker

Hi all,

I have this project I was working on, which for some unclear reason only outputs to the left speaker.
I’ve tried the steps in the cleanup script in the stickied FAQ post (running the script itself didn’t work FYI) with no success.
Reapplying the Playback Template also did not work.
I tried recreating the aggregate device, also did not work.

I do notice this consistent behaviour in the application.log file:
This project has the following lines

2019-07-02 08:03:57.176 : Attempting to remap output ports: 
0: Thijs’ AirPods [0]
1: Thijs’ AirPods [1]

2019-07-02 08:03:57.176 : Remapped outputs: 
Mixer output port ID 7 =>  
-  => Audio DevicePortID 6: O|F5FF165838A74C5DB2A00A57E0E1E155|Aggregate Device 1  OK

2019-07-02 08:03:57.176 : Process ActivateDocumentSetup message

A different project (where both outputs work) has these lines:

2019-07-02 08:04:09.131 : Attempting to remap output ports: 
0: Thijs’ AirPods [0]
1: Thijs’ AirPods [1]

2019-07-02 08:04:09.131 : Remapped outputs: 
Mixer output port ID 7 =>  
-  => Audio DevicePortID 6: O|F5FF165838A74C5DB2A00A57E0E1E155|Aggregate Device 1  OK
-  => Audio DevicePortID 7: O|F5FF165838A74C5DB2A00A57E0E1E155|Aggregate Device 2  OK

2019-07-02 08:04:09.131 : Process ActivateDocumentSetup message

I can consistently switch between the two cases and get the same results.

Attached are the project and the diagnostics.
I have to remove the playback template from the project, otherwise the file was too big.

Cheers!
Rhapsody for Trombone and Band.dorico.zip (561 KB)
Dorico Diagnostics.zip (342 KB)

Hi Thijs,
thanks for the data, and looking at it, I’m also pretty stunned and have no explanation for it so far.
For further testing, I’ve attached a special version of your project where I deleted all the audio engine data from it.
If you load that and choose your AirPods (and of course reapply the default playback template), still the same issue?
Rhapsody for Trombone and Band Ulftest.dorico.zip (547 KB)

That’s really weird. I get the same result as you, on my late 2013 macbook pro and NP playback template, although T-Racks metering in the master fader shows me a stereo signal… Something’s wrong with the output after the mixing table.

Hi Ulf,

Opening up your edited project, the sample rate was initially set to 16kHz. I switched it to 48kHz, but the log said

Sample rate changed internally to 44100

Nothing played, so I switched to “Built-in Audio” and back. Now the “Mixer output port ID…” lines looked alright (two entries), but still no audio played.
I closed the project, quit Dorico and opened the project up again: now everythings seems to work correctly (both AirPods play, sounds like the correct sample rate).

Thanks for the assistance!
It must’ve been an unlucky combination of events!