ProtoDAC TDA1387 X8 project

[Skip Pack]

Very odd "One curiosity is that, on reboot, the output mode is reset to plughw from direct."

I'm not seeing that on my end. If I set ALSA output mode to Direct (hw) and then reboot, the setting sticks and the log shows same: 20230611 135145 worker: ALSA output mode (Direct: hw)

It looks like the config file I posted is missing the top and bottom delimiters but I don't think that would cause your issue. In any case here is the updated file.

Code:

---
devices:
 adjust_period: 10
 capture:
   channels: 2
   extra_samples: 0
   filename: /dev/stdin
   format: S16LE
   read_bytes: 0
   skip_bytes: 0
   type: File
 capture_samplerate: 0
 chunksize: 4096
 enable_rate_adjust: false
 enable_resampling: false
 playback:
   channels: 2
   device: hw:0,0
   format: S16LE
   type: Alsa
 queuelimit: 1
 rate_measure_interval: 1
 resampler_type: Synchronous
 samplerate: 44100
 silence_threshold: -60
 silence_timeout: 3
 stop_on_rate_change: false
 target_level: 0
filters:
 Dither:
   parameters:
     bits: 16
     type: Simple
   type: Dither
 Volume:
   parameters:
     ramp_time: 200
   type: Volume
mixers:
 stereo:
   channels:
     in: 2
     out: 2
   mapping:
   - dest: 0
     mute: false
     sources:
     - channel: 0
       gain: -3
       inverted: true
       mute: false
   - dest: 1
     mute: false
     sources:
     - channel: 1
       gain: -3
       inverted: true
       mute: false
pipeline:
- name: stereo
 type: Mixer
- channel: 0
 names:
 - Volume
 type: Filter
- channel: 1
 names:
 - Volume
 type: Filter
- channel: 0
 names:
 - Dither
 type: Filter
- channel: 1
 names:
 - Dither
 type: Filter
...

CamillaDSP also writes errors and warnings to the MPD log
/var/log/mpd/log

The usage mode thing turned out to be a red herring. The problem persists, however, even with the delimeters in place. The unusual symptom is in a change to the 'ProtoDAC VC.yml' file. I create it in the configs subdir and it looks good.  When I bring it up in the cdsp settings interface it is there and selects fine. Then, I go to play a file and hit the MPD error. Then I again check on the 'ProtoDAC VC.yml' file (SSH via putty) and that file is truncated showing only 'devices' with 'capture' and 'playback' sections -- perhaps only 1/4 of the full file. I plan to document a clean example of this with the logs and screen captures, so, if this scant description doesn't trigger a strong suspicion on your part, it probably makes sense to wait for the filled-out version.

Thanks,   Skip