Critical Fix:
- Changed hw: devices from hw:CARD=C20,DEV=0 to hw:4,0
- CPAL only accepts numeric format (hw:X,Y), not named format
- Parse aplay -l to get actual card numbers and device numbers
Before: hw:CARD=C20,DEV=0 → Device not found → fallback to default
After: hw:4,0 → CPAL finds device → bit-perfect playback works
Example from user's system:
- aplay -l shows: card 4: C20 [Cambridge Audio USB Audio 2.0], device 0
- We now create: hw:4,0 (not hw:CARD=C20,DEV=0)
- Description still shows: "Cambridge Audio USB Audio 2.0 (Direct Hardware - Bit-perfect)"
This fixes the issue where selecting the DAC device would play through
laptop speakers instead because CPAL couldn't find the device.
vicrodh
63b6809259