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Piano 2.1 + rpi4: No sound out of analog L + R, only Subwoofer


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PROBLEM: After setting up my Piano 2.1, I get sound out of my subwoofer in Dual-Stereo, Dual-Mono, or Subwoofer 2.0 modes, but no sound out of my L or R analog outputs under any circumstances.

DETAILS: I have a Piano 2.1, and I have its dtoverlay enabled in /boot/config.txt. I also have the system audio turned off with dtparam=audio=off.

 

I get this output from aplay -l:
 

**** List of PLAYBACK Hardware Devices ****
card 0: PianoDACPlus [PianoDACPlus], device 0: PianoDACPlus multicodec-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

 

When I play audio using aplay, mplayer, or even speaker-test, I only get output from my subwoofer. I've tried two different speakers on the regular analog outputs, neither with any result, then confirmed that they were working by connecting them to a hifiberry on a separate raspberry pi.

 

Here's the output of my amixer, in case it's helpful:
 

Simple mixer control 'Master',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 207
  Mono:
  Front Left: Playback 165 [80%] [-21.00dB] [off]
  Front Right: Playback 165 [80%] [-21.00dB] [off]
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 Boost',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: '2s'
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 165 [80%] [-21.00dB] [on]
  Front Right: Playback 165 [80%] [-21.00dB] [on]
Simple mixer control 'Dual Mode',0
  Capabilities: enum
  Items: 'None' 'Dual-Mono' 'Dual-Stereo'
  Item0: 'Dual-Stereo'
Simple mixer control 'Lowpass',0
  Capabilities: enum
  Items: '60' '70' '80' '90' '100' '110' '120' '130' '140' '150' '160' '170' '180' '190' '200'
  Item0: '60'
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 'Subwoofer',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 207
  Mono:
  Front Left: Playback 165 [80%] [-21.00dB] [off]
  Front Right: Playback 165 [80%] [-21.00dB] [off]
Simple mixer control 'Subwoofer mode',0
  Capabilities: enum
  Items: 'None' '2.0' '2.1' '2.2'
  Item0: 'None'
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'


Do you have any idea what might be happening? Please let me know if I can provide any other output or information to help you diagnose the issue.
 

Link to comment
5 hours ago, nate451 said:

PROBLEM: After setting up my Piano 2.1, I get sound out of my subwoofer in Dual-Stereo, Dual-Mono, or Subwoofer 2.0 modes, but no sound out of my L or R analog outputs under any circumstances.

DETAILS: I have a Piano 2.1, and I have its dtoverlay enabled in /boot/config.txt. I also have the system audio turned off with dtparam=audio=off.

 

I get this output from aplay -l:
 


**** List of PLAYBACK Hardware Devices ****
card 0: PianoDACPlus [PianoDACPlus], device 0: PianoDACPlus multicodec-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

 

When I play audio using aplay, mplayer, or even speaker-test, I only get output from my subwoofer. I've tried two different speakers on the regular analog outputs, neither with any result, then confirmed that they were working by connecting them to a hifiberry on a separate raspberry pi.

 

Here's the output of my amixer, in case it's helpful:
 


Simple mixer control 'Master',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 207
  Mono:
  Front Left: Playback 165 [80%] [-21.00dB] [off]
  Front Right: Playback 165 [80%] [-21.00dB] [off]
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 Boost',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: '2s'
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 165 [80%] [-21.00dB] [on]
  Front Right: Playback 165 [80%] [-21.00dB] [on]
Simple mixer control 'Dual Mode',0
  Capabilities: enum
  Items: 'None' 'Dual-Mono' 'Dual-Stereo'
  Item0: 'Dual-Stereo'
Simple mixer control 'Lowpass',0
  Capabilities: enum
  Items: '60' '70' '80' '90' '100' '110' '120' '130' '140' '150' '160' '170' '180' '190' '200'
  Item0: '60'
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 'Subwoofer',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 207
  Mono:
  Front Left: Playback 165 [80%] [-21.00dB] [off]
  Front Right: Playback 165 [80%] [-21.00dB] [off]
Simple mixer control 'Subwoofer mode',0
  Capabilities: enum
  Items: 'None' '2.0' '2.1' '2.2'
  Item0: 'None'
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'


Do you have any idea what might be happening? Please let me know if I can provide any other output or information to help you diagnose the issue.
 

Forwarded PM please check

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  • 1 year later...

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