09-23-2019, 10:02 AM
That's very interesting because I had exactly the same situation with a Pi2Design 502DAC Pro, which uses the hifiberry-digi-pro overlay. It works perfectly on a Pi 3b, not at all on a Pi 4b with exactly the same Moode SD card.
When I investigated with Pi2Design they weren't very confident in their design, said it had timing issues which was why they were now working on a follow-up product, and maybe the Pi 4 had just triggered the timing issue.
But if you're seeing the exact same thing with the Hifiberry card then perhaps it points to a more fundamental problem with the driver - both products use the WM8804 chip.
When I investigated with Pi2Design they weren't very confident in their design, said it had timing issues which was why they were now working on a follow-up product, and maybe the Pi 4 had just triggered the timing issue.
But if you're seeing the exact same thing with the Hifiberry card then perhaps it points to a more fundamental problem with the driver - both products use the WM8804 chip.
