RaspberryPi4 + HifiBerryDAC2Pro

kattadachs · March 11, 2021 at 3:24 PM

Hi,

After installing LibreELEC 9.2.6 (RPi4.arm) AUDIO showed "ALSA:snd_rpi_hifiberry_dacplus, HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0" but I got no sound. HDMI Sound is working.

I already tried a fix from a similar thread and added

dtparam=audio=off
force_eeprom_read=0
to the config.txt but still nothing but silence

Actually the DAC was recognized "out-of-the-box", adding only "overlay dtoverlay=hifiberry-dacplus" to the config.txt eliminated the entry. Adding the three lines (dtparam/force_eeprom/dtoverlay) resulted in the same "ALSA"-Audio-entry as if I added nothing at all.

Any ideas, can somebody help? Is my soundcard defect?

**Da Flex** · March 11, 2021 at 5:56 PM Official Post

I assume I've been read the HiFiBerry doc about LE. I'm wondering why there is no HiFiBerry analog device available.

Notice step 20 of the doc (amixer -c 0 set Digital 80%). Maybe it's just a volume issue.

kattadachs · March 11, 2021 at 7:19 PM

I Gave it a try, unfortunately the setting of the volume had no effect.

**Da Flex** · March 11, 2021 at 8:43 PM Official Post

Please post the output of the amixer command.

Normally the HiFiBerry overlay activates I2S, but it doesn't hurt to activate it explicitly at config.txt (remove the leading #).

kattadachs · March 11, 2021 at 9:28 PM

AMIXER:

Code

Simple mixer control 'DSP Program',0
 Capabilities: enum
 Items: 'FIR interpolation with de-emphasis' 'Low latency IIR with de-emphasis' 'High attenuation with de-emphasis' 'Fixed process flow' 'Ringing-less low latency FIR'
 Item0: 'FIR interpolation with de-emphasis'
Simple mixer control 'Analogue',0
 Capabilities: pvolume
 Playback channels: Front Left - Front Right
 Limits: Playback 0 - 1
 Mono:
 Front Left: Playback 1 [100%] [0.00dB]
 Front Right: Playback 1 [100%] [0.00dB]
Simple mixer control 'Analogue Playback Bost',0
 Capabilities: volume
 Playback channels: Front Left - Front Right
 Capture channels: Front Left - Front Right
 Limits: 0 - 1
 Front Left: 1 [100%] [0.80dB]
 Front Right: 1 [100%] [0.80dB]
Simple mixer control 'Auto Mute',0
 Capabilities: pswitch
 Playback channels: Front Left - Front Right
 Mono:
 Front Left: Playback [on]
 Front Right: Playback [on]
Simple mixer control 'Auto Mute Mono',0
 Capabilities: pswitch pswitch-joined
 Playback channels: Mono
 Mono: Playback [on]
Simple mixer control 'Auto Mute Time Left',0
 Capabilities: enum
 Items: '21ms' '106ms' '213ms' '533ms' '1.07s' '2.13s' '5.33s' '10.66s'
 Item0: '21ms'
Simple mixer control 'Auto Mute Time Right',0
 Capabilities: enum
 Items: '21ms' '106ms' '213ms' '533ms' '1.07s' '2.13s' '5.33s' '10.66s'
 Item0: '21ms'
Simple mixer control 'Clock Missing Period',0
 Capabilities: enum
 Items: '1s' '2s' '3s' '4s' '5s' '6s' '7s' '8s'
 Item0: '1s'
Simple mixer control 'Deemphasis',0
 Capabilities: pswitch pswitch-joined
 Playback channels: Mono
 Mono: Playback [on]
Simple mixer control 'Digital',0
 Capabilities: pvolume pswitch
 Playback channels: Front Left - Front Right
 Limits: Playback 0 - 207
 Mono:
 Front Left: Playback 207 [100%] [0.00dB] [on]
 Front Right: Playback 207 [100%] [0.00dB] [on]
Simple mixer control 'Max Overclock DAC',0
 Capabilities: volume volume-joined
 Playback channels: Mono
 Capture channels: Mono
 Limits: 0 - 40
 Mono: 0 [0%]
Simple mixer control 'Max Overclock DSP',0
 Capabilities: volume volume-joined
 Playback channels: Mono
 Capture channels: Mono
 Limits: 0 - 40
 Mono: 0 [0%]
Simple mixer control 'Max Overclock PLL',0
 Capabilities: volume volume-joined
 Playback channels: Mono
 Capture channels: Mono
 Limits: 0 - 20
 Mono: 0 [0%]
Simple mixer control 'Volume Ramp Down Emergency Rate',0
 Capabilities: enum
 Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate'
 Item0: '1 sample/update'
Simple mixer control 'Volume Ramp Down Emergency Step',0
 Capabilities: enum
 Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step'
 Item0: '4dB/step'
Simple mixer control 'Volume Ramp Down Rate',0
 Capabilities: enum
 Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate'
 Item0: '1 sample/update'
Simple mixer control 'Volume Ramp Down Step',0
 Capabilities: enum
 Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step'
 Item0: '1dB/step'
Simple mixer control 'Volume Ramp Up Rate',0
 Capabilities: enum
 Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate'
 Item0: '1 sample/update'
Simple mixer control 'Volume Ramp Up Step',0
 Capabilities: enum
 Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step'
 Item0: '1dB/step'

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Before this, I activeted i2s at the configt.txt.

**Da Flex** · March 11, 2021 at 11:07 PM Official Post

The outputs says you have a DSP. The DSP is an expansion module: Click!

If you have this module mounted, remove it and try again.

kattadachs · March 13, 2021 at 11:16 AM

No, there's no DSP, only the DAC.

By now, I reassembled the system and built a clean, new installation of LibreElec.

Without any changes to the system or the config AMIXER shows up with this data:

(Still the DSP-entry)

Code

Simple mixer control 'DSP Program',0
  Capabilities: enum
  Items: 'FIR interpolation with de-emphasis' 'Low latency IIR with de-emphasis' 'High attenuation with de-emphasis' 'Fixed process flow' 'Ringing-less low latency FIR'
  Item0: 'FIR interpolation with de-emphasis'
Simple mixer control 'Analogue',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 1
  Mono:
  Front Left: Playback 1 [100%] [0.00dB]
  Front Right: Playback 1 [100%] [0.00dB]
Simple mixer control 'Analogue Playback Bost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 1
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Auto Mute',0
  Capabilities: pswitch
  Playback channels: Front Left - Front Right
  Mono:
  Front Left: Playback [on]
  Front Right: Playback [on]
Simple mixer control 'Auto Mute Mono',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Auto Mute Time Left',0
  Capabilities: enum
  Items: '21ms' '106ms' '213ms' '533ms' '1.07s' '2.13s' '5.33s' '10.66s'
  Item0: '21ms'
Simple mixer control 'Auto Mute Time Right',0
  Capabilities: enum
  Items: '21ms' '106ms' '213ms' '533ms' '1.07s' '2.13s' '5.33s' '10.66s'
  Item0: '21ms'
Simple mixer control 'Clock Missing Period',0
  Capabilities: enum
  Items: '1s' '2s' '3s' '4s' '5s' '6s' '7s' '8s'
  Item0: '1s'
Simple mixer control 'Deemphasis',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Digital',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 207
  Mono:
  Front Left: Playback 207 [100%] [0.00dB] [on]
  Front Right: Playback 207 [100%] [0.00dB] [on]
Simple mixer control 'Max Overclock DAC',0
  Capabilities: volume volume-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 40
  Mono: 0 [0%]
Simple mixer control 'Max Overclock DSP',0
  Capabilities: volume volume-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 40
  Mono: 0 [0%]
Simple mixer control 'Max Overclock PLL',0
  Capabilities: volume volume-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 20
  Mono: 0 [0%]
Simple mixer control 'Volume Ramp Down Emergency Rate',0
  Capabilities: enum
  Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate'
  Item0: '1 sample/update'
Simple mixer control 'Volume Ramp Down Emergency Step',0
  Capabilities: enum
  Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step'
  Item0: '4dB/step'
Simple mixer control 'Volume Ramp Down Rate',0
  Capabilities: enum
  Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate'
  Item0: '1 sample/update'
Simple mixer control 'Volume Ramp Down Step',0
  Capabilities: enum
  Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step'
  Item0: '1dB/step'
Simple mixer control 'Volume Ramp Up Rate',0
  Capabilities: enum
  Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate'
  Item0: '1 sample/update'
Simple mixer control 'Volume Ramp Up Step',0
  Capabilities: enum
  Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step'
  Item0: '1dB/step'

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I wonder that the DAC seems to be activated out of the box, without any changes to the config.

On this "fresh" system, with the DAC already recognized, which changes should be done?

**Da Flex** · March 13, 2021 at 5:11 PM Official Post

I was helping another user some time ago, and it seems like he just needed the HiFiBerry overlay line at config.txt: Click!

kattadachs · March 13, 2021 at 5:50 PM

And here it's getting strange. Just adding that line results in a missing DAC. After reboot the only entries available are HDMI/Analogue/HDMI&Analogue/Pulse Bluetooth, and I got sound via HDMI.

This is my config.txt with the overlays-entry:

Code

# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2009-2014 Stephan Raue (stephan@openelec.tv)
# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
################################################################################
# Bootloader configuration - config.txt
################################################################################

################################################################################
# Memory (System/GPU configuration )
################################################################################

# Default GPU memory split - at least 288M is needed for some 4k HEVC files
gpu_mem=320

################################################################################
# For overclocking and various other settings, see:
# https://www.raspberrypi.org/documentation/configuration/config-txt.md
################################################################################
# Set 'force_turbo=1' to disable dynamic overclocking and enable overclocking always.
force_turbo=0

# Force HDMI even if unplugged or powered off
# hdmi_force_hotplug=1

# Doesn't sent initial active source message.
# Avoids bringing CEC (enabled TV) out of standby and channel switch when
# rebooting.
hdmi_ignore_cec_init=1

################################################################################
# End of default configuration
################################################################################
dtoverlay=hifiberry-dacplus
################################################################################
# Include distribution specific config file if it exists.
################################################################################
[all]
include distroconfig.txt

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and the distroconfig:

Code

  GNU nano 4.3                                   /flash/distroconfig.txt                                             # SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2019-present Team LibreELEC (https://libreelec.tv)

# WARNING: DO NOT EDIT THIS FILE - IT WILL BE OVERWRITTEN WHEN UPGRADING!
dtoverlay=vc4-fkms-v3d
disable_overscan=1

Without the entry, the DAC is available in the menu. The DAC is connected to my amplifier with RCA...

**Da Flex** · March 13, 2021 at 6:11 PM Official Post

Seems like the driver does the opposite of the expected behavior. Better ask at the HiFiBerry forum.

kattadachs · March 13, 2021 at 6:40 PM

I has a feeling that I simply got a broken DAC-Card...

anyway thanks a lot for your effort

**Da Flex** · March 13, 2021 at 6:49 PM Official Post

Broken, or it needs a firmware update is my guess.

Good luck!

kattadachs · March 16, 2021 at 7:00 PM

*sigh*

I simply ordered another Dac2pro, assembled it and... it worked with no problems just out of the box.

So the other card definitely seems to be defective.