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No sound Digi+ pro/Raspi 4

Hello everyone,

I got a RasPi 4/4GB and a Digi+ Pro Soundcard.

Installed from the scratch.

I can see in the Systeminformation there's a Digi+ (not Pro) visible but Sound Card ID is 0 (I assume that's normal).

Problem is, I can't hear any sound, not optical (plaing a radiostation, red light ist flashing), not via Coax. Theres a crackling noise to hear...

I'm using a RME ADI-2 DAC which is working perfectly otherwise.

What can I do?

/boot/config.txt:

# We always use the same names, the real used variant is selected by
# BR2_PACKAGE_RPI_FIRMWARE_{DEFAULT,X,CD} choice
start_file=start.elf
fixup_file=fixup.dat

kernel=zImage

# To use an external initramfs file
#initramfs rootfs.cpio.gz

# Disable overscan assuming the display supports displaying the full resolution
# If the text shown on the screen disappears off the edge, comment this out
disable_overscan=1

# How much memory in MB to assign to the GPU on Pi models having
# 256, 512 or 1024 MB total memory
gpu_mem_256=100
gpu_mem_512=100
gpu_mem_1024=100
# Enable I2C and SPI
dtparam=i2c=on
dtparam=spi=on
dtoverlay=i2c-gpio,i2c_gpio_sda=0,i2c_gpio_scl=1
dtoverlay=vc4-fkms-v3d,audio=off
dtoverlay=hifiberry-digi

 

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