Reply To: Pi3B+ and IQaudioO Pi-DAC+ Pro: no sound

28. Dezember 2018 at 16:44 #42964

Hmmm when I google pcm512x: probe of 1-004c failed with error -121. I find this: pcm512x They are talking about a dobble i2c. I tried to find your + pro card at iQaudio but I did not find your card. Try to disable I2S-MMAP in the settings tab and reboot