PulseAudio loopback module with crackling sound / noise under Kubuntu 17.10

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I tried to get audio from my second monitor into Kubuntu through the line-in stereo jack which is now basically working after fiddling with alsamixer (un-mute Line & getting volume settings right) and adding load-module module-loopback to my /etc/pulse/default.pa



My current and biggest problem with this setup is the crackling sound / noise I get while playing audio - even after adjusting the line-in volume to ~5% (everything above that is just painful) and increasing volume on my external amplifier. (Under Windows 10 I have no crackling / sound problems with this setup even with line-in volume of 100%)



What I've tried so far:



1) Having load-module module-udev-detect tsched=0 (adding the tsched=0)
in /etc/pulse/default.pa for deactivating timer-based scheduling in PulseAudio which helped other people with crackling sound.



2) Combining 1) with modifications in /etc/pulse/daemon.conf for setting the default fragment number and buffer size in PulseAudio (like here: https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Static_noise_when_using_headphones)



3) Explicitly writing the loopback source & sink with its rate and channels:



load-module module-loopback source=alsa_input.pci-0000_12_00.3.analog-stereo sink=alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo rate=44100 channels=2


And 4) modifying /etc/modprobe.d/alsa-base.conf with options snd-hda-intel position_fix=1 or options snd-hda-intel position_fix=2 which was suggested here: https://wiki.ubuntu.com/Audio/PositionReporting



My system:



  • Kubuntu 17.10, 64 Bit

  • Kernel-Version 4.13.0-36-generic

  • AMD Ryzen 7 1700X CPU

  • 16 GB RAM

  • ASRock X370 Taichi motherboard

  • Nvidia GTX 1070 GPU

lspci -nnk | grep -i audio -A2
0e:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1)
 Subsystem: CardExpert Technology GP104 High Definition Audio Controller [10b0:1b81]
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd_hda_intel
--
12:00.3 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Device [1022:1457]
 Subsystem: ASRock Incorporation Device [1849:1220]
 Kernel driver in use: snd_hda_intel


cat /proc/asound/cards
 0 [NVidia ]: HDA-Intel - HDA NVidia
 HDA NVidia at 0xfd080000 irq 329 
 1 [Audio ]: USB-Audio - DigiHug USB Audio 
 FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed
 2 [Generic ]: HDA-Intel - HD-Audio Generic
 HD-Audio Generic at 0xfd900000 irq 331


pactl list sources
Quelle #0
 Status: RUNNING
 Name: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo.monitor
 Beschreibung: Monitor of DigiHug USB Audio Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 7
 Stumm: ja
 Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 65536 / 100% / 0,00 dB
 Ziel-Monitor: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo
 Latenz: 0 usec, eingestellt 40000 usec
 Flags: DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 device.description = "Monitor of DigiHug USB Audio Analog Stereo"
 device.class = "monitor"
 alsa.card = "1"
 alsa.card_name = "DigiHug USB Audio"
 alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed"
 alsa.driver_name = "snd_usb_audio"
 device.bus_path = "pci-0000:11:00.3-usb-0:2:1.1"
 sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:11:00.3/usb3/3-2/3-2:1.1/sound/card1"
 udev.id = "usb-FiiO_DigiHug_USB_Audio-01"
 device.bus = "usb"
 device.vendor.id = "1852"
 device.vendor.name = "GYROCOM C&C Co., LTD"
 device.product.id = "7022"
 device.product.name = "DigiHug USB Audio"
 device.serial = "FiiO_DigiHug_USB_Audio"
 device.string = "1"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-usb"
 Formate:
 pcm

Quelle #1
 Status: RUNNING
 Name: alsa_input.pci-0000_12_00.3.analog-stereo
 Beschreibung: HD-Audio Generic Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 8
 Stumm: nein
 Lautstärke: front-left: 6554 / 10% / -60,00 dB, front-right: 6554 / 10% / -60,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 6554 / 10% / -60,00 dB
 Ziel-Monitor: k. A.
 Latenz: 30 usec, eingestellt 40000 usec
 Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 alsa.resolution_bits = "16"
 device.api = "alsa"
 device.class = "sound"
 alsa.class = "generic"
 alsa.subclass = "generic-mix"
 alsa.name = "ALC1220 Analog"
 alsa.id = "ALC1220 Analog"
 alsa.subdevice = "0"
 alsa.subdevice_name = "subdevice #0"
 alsa.device = "0"
 alsa.card = "2"
 alsa.card_name = "HD-Audio Generic"
 alsa.long_card_name = "HD-Audio Generic at 0xfd900000 irq 331"
 alsa.driver_name = "snd_hda_intel"
 device.bus_path = "pci-0000:12:00.3"
 sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:12:00.3/sound/card2"
 device.bus = "pci"
 device.vendor.id = "1022"
 device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
 device.product.id = "1457"
 device.string = "front:2"
 device.buffering.buffer_size = "65536"
 device.buffering.fragment_size = "32768"
 device.access_mode = "mmap+timer"
 device.profile.name = "analog-stereo"
 device.profile.description = "Analog Stereo"
 device.description = "HD-Audio Generic Analog Stereo"
 alsa.mixer_name = "Realtek ALC1220"
 alsa.components = "HDA:10ec1220,18491220,00100003"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-pci"
 Ports:
 analog-input-front-mic: Vorderes Mikrofon (priority: 8500, not available)
 analog-input-rear-mic: Rückwärtiges Mikrofon (priority: 8200, not available)
 analog-input-linein: Eingang (priority: 8100, available)
 Aktiver Port: analog-input-linein
 Formate:
 pcm


pactl list sinks
Ziel #0
 Status: RUNNING
 Name: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo
 Beschreibung: DigiHug USB Audio Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 7
 Stumm: nein
 Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 65536 / 100% / 0,00 dB
 Quellen-Monitor: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo.monitor
 Latenz: 46296 usec, eingestellt 40000 usec
 Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 alsa.resolution_bits = "16"
 device.api = "alsa"
 device.class = "sound"
 alsa.class = "generic"
 alsa.subclass = "generic-mix"
 alsa.name = "USB Audio"
 alsa.id = "USB Audio"
 alsa.subdevice = "0"
 alsa.subdevice_name = "subdevice #0"
 alsa.device = "0"
 alsa.card = "1"
 alsa.card_name = "DigiHug USB Audio"
 alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed"
 alsa.driver_name = "snd_usb_audio"
 device.bus_path = "pci-0000:11:00.3-usb-0:2:1.1"
 sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:11:00.3/usb3/3-2/3-2:1.1/sound/card1"
 udev.id = "usb-FiiO_DigiHug_USB_Audio-01"
 device.bus = "usb"
 device.vendor.id = "1852"
 device.vendor.name = "GYROCOM C&C Co., LTD"
 device.product.id = "7022"
 device.product.name = "DigiHug USB Audio"
 device.serial = "FiiO_DigiHug_USB_Audio"
 device.string = "front:1"
 device.buffering.buffer_size = "352800"
 device.buffering.fragment_size = "176400"
 device.access_mode = "mmap+timer"
 device.profile.name = "analog-stereo"
 device.profile.description = "Analog Stereo"
 device.description = "DigiHug USB Audio Analog Stereo"
 alsa.mixer_name = "USB Mixer"
 alsa.components = "USB1852:7022"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-usb"
 Ports:
 analog-output: Analoge Ausgabe (priority: 9900)
 Aktiver Port: analog-output
 Formate:
 pcm


My basic audio setup:



Inputs:



  • audio coming from second monitor into computer line-in

  • all other audio is coming from the system / applications / music

Output:



  • USB-DAC/AMP which my headphone is connected to





sound kubuntu pulseaudio alsa







share|improve this question





















  • What kernel are you running? I had a similar problem a while ago with a Z97 motherboard, and updating the kernel fixed it for me (at the time the Z97 was a new board/chipset). Perhaps try upgrading to the 4.15 kernel?
    – Vanessa Deagan
    Mar 13 at 17:38










  • At the moment I'm using 4.13.0-36 (generic, newest from the standard repo). I'm not that versed in Linux, but from what I gathered upgrading to a mainline kernel is kind of risky or rather 'advanced stuff' and can probably excavate/generate new problems? My motherboard is not that new (first Ryzen-generation) so I'd hope any normal fixes should already be included in the current kernel. But nevertheless I thank you for the suggestion! :)
    – Vorkosik
    Mar 14 at 12:30










  • Run in terminal alsamixer, hit f5 to select all controls and mute Mic Boost (+20db) if enabled.
    – Michal Przybylowicz
    Mar 14 at 22:09










  • Thanks for the suggestion - I already did that first whilst trying to get the line-in to work. Currently I have all boosts (2x Mic Boosts and 1x Line Boost) at '0' (no mute-option there) and a setting named Capture at 5 (the aforementioned 5% volume). In fact I tried muting all options not related to line-in but no constellation got rid of the problem.
    – Vorkosik
    Mar 15 at 0:12














up vote
0
down vote

favorite












I tried to get audio from my second monitor into Kubuntu through the line-in stereo jack which is now basically working after fiddling with alsamixer (un-mute Line & getting volume settings right) and adding load-module module-loopback to my /etc/pulse/default.pa



My current and biggest problem with this setup is the crackling sound / noise I get while playing audio - even after adjusting the line-in volume to ~5% (everything above that is just painful) and increasing volume on my external amplifier. (Under Windows 10 I have no crackling / sound problems with this setup even with line-in volume of 100%)



What I've tried so far:



1) Having load-module module-udev-detect tsched=0 (adding the tsched=0)
in /etc/pulse/default.pa for deactivating timer-based scheduling in PulseAudio which helped other people with crackling sound.



2) Combining 1) with modifications in /etc/pulse/daemon.conf for setting the default fragment number and buffer size in PulseAudio (like here: https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Static_noise_when_using_headphones)



3) Explicitly writing the loopback source & sink with its rate and channels:



load-module module-loopback source=alsa_input.pci-0000_12_00.3.analog-stereo sink=alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo rate=44100 channels=2


And 4) modifying /etc/modprobe.d/alsa-base.conf with options snd-hda-intel position_fix=1 or options snd-hda-intel position_fix=2 which was suggested here: https://wiki.ubuntu.com/Audio/PositionReporting



My system:



  • Kubuntu 17.10, 64 Bit

  • Kernel-Version 4.13.0-36-generic

  • AMD Ryzen 7 1700X CPU

  • 16 GB RAM

  • ASRock X370 Taichi motherboard

  • Nvidia GTX 1070 GPU

lspci -nnk | grep -i audio -A2
0e:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1)
 Subsystem: CardExpert Technology GP104 High Definition Audio Controller [10b0:1b81]
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd_hda_intel
--
12:00.3 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Device [1022:1457]
 Subsystem: ASRock Incorporation Device [1849:1220]
 Kernel driver in use: snd_hda_intel


cat /proc/asound/cards
 0 [NVidia ]: HDA-Intel - HDA NVidia
 HDA NVidia at 0xfd080000 irq 329 
 1 [Audio ]: USB-Audio - DigiHug USB Audio 
 FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed
 2 [Generic ]: HDA-Intel - HD-Audio Generic
 HD-Audio Generic at 0xfd900000 irq 331


pactl list sources
Quelle #0
 Status: RUNNING
 Name: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo.monitor
 Beschreibung: Monitor of DigiHug USB Audio Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 7
 Stumm: ja
 Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 65536 / 100% / 0,00 dB
 Ziel-Monitor: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo
 Latenz: 0 usec, eingestellt 40000 usec
 Flags: DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 device.description = "Monitor of DigiHug USB Audio Analog Stereo"
 device.class = "monitor"
 alsa.card = "1"
 alsa.card_name = "DigiHug USB Audio"
 alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed"
 alsa.driver_name = "snd_usb_audio"
 device.bus_path = "pci-0000:11:00.3-usb-0:2:1.1"
 sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:11:00.3/usb3/3-2/3-2:1.1/sound/card1"
 udev.id = "usb-FiiO_DigiHug_USB_Audio-01"
 device.bus = "usb"
 device.vendor.id = "1852"
 device.vendor.name = "GYROCOM C&C Co., LTD"
 device.product.id = "7022"
 device.product.name = "DigiHug USB Audio"
 device.serial = "FiiO_DigiHug_USB_Audio"
 device.string = "1"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-usb"
 Formate:
 pcm

Quelle #1
 Status: RUNNING
 Name: alsa_input.pci-0000_12_00.3.analog-stereo
 Beschreibung: HD-Audio Generic Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 8
 Stumm: nein
 Lautstärke: front-left: 6554 / 10% / -60,00 dB, front-right: 6554 / 10% / -60,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 6554 / 10% / -60,00 dB
 Ziel-Monitor: k. A.
 Latenz: 30 usec, eingestellt 40000 usec
 Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 alsa.resolution_bits = "16"
 device.api = "alsa"
 device.class = "sound"
 alsa.class = "generic"
 alsa.subclass = "generic-mix"
 alsa.name = "ALC1220 Analog"
 alsa.id = "ALC1220 Analog"
 alsa.subdevice = "0"
 alsa.subdevice_name = "subdevice #0"
 alsa.device = "0"
 alsa.card = "2"
 alsa.card_name = "HD-Audio Generic"
 alsa.long_card_name = "HD-Audio Generic at 0xfd900000 irq 331"
 alsa.driver_name = "snd_hda_intel"
 device.bus_path = "pci-0000:12:00.3"
 sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:12:00.3/sound/card2"
 device.bus = "pci"
 device.vendor.id = "1022"
 device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
 device.product.id = "1457"
 device.string = "front:2"
 device.buffering.buffer_size = "65536"
 device.buffering.fragment_size = "32768"
 device.access_mode = "mmap+timer"
 device.profile.name = "analog-stereo"
 device.profile.description = "Analog Stereo"
 device.description = "HD-Audio Generic Analog Stereo"
 alsa.mixer_name = "Realtek ALC1220"
 alsa.components = "HDA:10ec1220,18491220,00100003"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-pci"
 Ports:
 analog-input-front-mic: Vorderes Mikrofon (priority: 8500, not available)
 analog-input-rear-mic: Rückwärtiges Mikrofon (priority: 8200, not available)
 analog-input-linein: Eingang (priority: 8100, available)
 Aktiver Port: analog-input-linein
 Formate:
 pcm


pactl list sinks
Ziel #0
 Status: RUNNING
 Name: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo
 Beschreibung: DigiHug USB Audio Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 7
 Stumm: nein
 Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 65536 / 100% / 0,00 dB
 Quellen-Monitor: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo.monitor
 Latenz: 46296 usec, eingestellt 40000 usec
 Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 alsa.resolution_bits = "16"
 device.api = "alsa"
 device.class = "sound"
 alsa.class = "generic"
 alsa.subclass = "generic-mix"
 alsa.name = "USB Audio"
 alsa.id = "USB Audio"
 alsa.subdevice = "0"
 alsa.subdevice_name = "subdevice #0"
 alsa.device = "0"
 alsa.card = "1"
 alsa.card_name = "DigiHug USB Audio"
 alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed"
 alsa.driver_name = "snd_usb_audio"
 device.bus_path = "pci-0000:11:00.3-usb-0:2:1.1"
 sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:11:00.3/usb3/3-2/3-2:1.1/sound/card1"
 udev.id = "usb-FiiO_DigiHug_USB_Audio-01"
 device.bus = "usb"
 device.vendor.id = "1852"
 device.vendor.name = "GYROCOM C&C Co., LTD"
 device.product.id = "7022"
 device.product.name = "DigiHug USB Audio"
 device.serial = "FiiO_DigiHug_USB_Audio"
 device.string = "front:1"
 device.buffering.buffer_size = "352800"
 device.buffering.fragment_size = "176400"
 device.access_mode = "mmap+timer"
 device.profile.name = "analog-stereo"
 device.profile.description = "Analog Stereo"
 device.description = "DigiHug USB Audio Analog Stereo"
 alsa.mixer_name = "USB Mixer"
 alsa.components = "USB1852:7022"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-usb"
 Ports:
 analog-output: Analoge Ausgabe (priority: 9900)
 Aktiver Port: analog-output
 Formate:
 pcm


My basic audio setup:



Inputs:



  • audio coming from second monitor into computer line-in

  • all other audio is coming from the system / applications / music

Output:



  • USB-DAC/AMP which my headphone is connected to





sound kubuntu pulseaudio alsa







share|improve this question





















  • What kernel are you running? I had a similar problem a while ago with a Z97 motherboard, and updating the kernel fixed it for me (at the time the Z97 was a new board/chipset). Perhaps try upgrading to the 4.15 kernel?
    – Vanessa Deagan
    Mar 13 at 17:38










  • At the moment I'm using 4.13.0-36 (generic, newest from the standard repo). I'm not that versed in Linux, but from what I gathered upgrading to a mainline kernel is kind of risky or rather 'advanced stuff' and can probably excavate/generate new problems? My motherboard is not that new (first Ryzen-generation) so I'd hope any normal fixes should already be included in the current kernel. But nevertheless I thank you for the suggestion! :)
    – Vorkosik
    Mar 14 at 12:30










  • Run in terminal alsamixer, hit f5 to select all controls and mute Mic Boost (+20db) if enabled.
    – Michal Przybylowicz
    Mar 14 at 22:09










  • Thanks for the suggestion - I already did that first whilst trying to get the line-in to work. Currently I have all boosts (2x Mic Boosts and 1x Line Boost) at '0' (no mute-option there) and a setting named Capture at 5 (the aforementioned 5% volume). In fact I tried muting all options not related to line-in but no constellation got rid of the problem.
    – Vorkosik
    Mar 15 at 0:12












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I tried to get audio from my second monitor into Kubuntu through the line-in stereo jack which is now basically working after fiddling with alsamixer (un-mute Line & getting volume settings right) and adding load-module module-loopback to my /etc/pulse/default.pa



My current and biggest problem with this setup is the crackling sound / noise I get while playing audio - even after adjusting the line-in volume to ~5% (everything above that is just painful) and increasing volume on my external amplifier. (Under Windows 10 I have no crackling / sound problems with this setup even with line-in volume of 100%)



What I've tried so far:



1) Having load-module module-udev-detect tsched=0 (adding the tsched=0)
in /etc/pulse/default.pa for deactivating timer-based scheduling in PulseAudio which helped other people with crackling sound.



2) Combining 1) with modifications in /etc/pulse/daemon.conf for setting the default fragment number and buffer size in PulseAudio (like here: https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Static_noise_when_using_headphones)



3) Explicitly writing the loopback source & sink with its rate and channels:



load-module module-loopback source=alsa_input.pci-0000_12_00.3.analog-stereo sink=alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo rate=44100 channels=2


And 4) modifying /etc/modprobe.d/alsa-base.conf with options snd-hda-intel position_fix=1 or options snd-hda-intel position_fix=2 which was suggested here: https://wiki.ubuntu.com/Audio/PositionReporting



My system:



  • Kubuntu 17.10, 64 Bit

  • Kernel-Version 4.13.0-36-generic

  • AMD Ryzen 7 1700X CPU

  • 16 GB RAM

  • ASRock X370 Taichi motherboard

  • Nvidia GTX 1070 GPU

lspci -nnk | grep -i audio -A2
0e:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1)
 Subsystem: CardExpert Technology GP104 High Definition Audio Controller [10b0:1b81]
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd_hda_intel
--
12:00.3 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Device [1022:1457]
 Subsystem: ASRock Incorporation Device [1849:1220]
 Kernel driver in use: snd_hda_intel


cat /proc/asound/cards
 0 [NVidia ]: HDA-Intel - HDA NVidia
 HDA NVidia at 0xfd080000 irq 329 
 1 [Audio ]: USB-Audio - DigiHug USB Audio 
 FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed
 2 [Generic ]: HDA-Intel - HD-Audio Generic
 HD-Audio Generic at 0xfd900000 irq 331


pactl list sources
Quelle #0
 Status: RUNNING
 Name: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo.monitor
 Beschreibung: Monitor of DigiHug USB Audio Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 7
 Stumm: ja
 Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 65536 / 100% / 0,00 dB
 Ziel-Monitor: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo
 Latenz: 0 usec, eingestellt 40000 usec
 Flags: DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 device.description = "Monitor of DigiHug USB Audio Analog Stereo"
 device.class = "monitor"
 alsa.card = "1"
 alsa.card_name = "DigiHug USB Audio"
 alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed"
 alsa.driver_name = "snd_usb_audio"
 device.bus_path = "pci-0000:11:00.3-usb-0:2:1.1"
 sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:11:00.3/usb3/3-2/3-2:1.1/sound/card1"
 udev.id = "usb-FiiO_DigiHug_USB_Audio-01"
 device.bus = "usb"
 device.vendor.id = "1852"
 device.vendor.name = "GYROCOM C&C Co., LTD"
 device.product.id = "7022"
 device.product.name = "DigiHug USB Audio"
 device.serial = "FiiO_DigiHug_USB_Audio"
 device.string = "1"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-usb"
 Formate:
 pcm

Quelle #1
 Status: RUNNING
 Name: alsa_input.pci-0000_12_00.3.analog-stereo
 Beschreibung: HD-Audio Generic Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 8
 Stumm: nein
 Lautstärke: front-left: 6554 / 10% / -60,00 dB, front-right: 6554 / 10% / -60,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 6554 / 10% / -60,00 dB
 Ziel-Monitor: k. A.
 Latenz: 30 usec, eingestellt 40000 usec
 Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 alsa.resolution_bits = "16"
 device.api = "alsa"
 device.class = "sound"
 alsa.class = "generic"
 alsa.subclass = "generic-mix"
 alsa.name = "ALC1220 Analog"
 alsa.id = "ALC1220 Analog"
 alsa.subdevice = "0"
 alsa.subdevice_name = "subdevice #0"
 alsa.device = "0"
 alsa.card = "2"
 alsa.card_name = "HD-Audio Generic"
 alsa.long_card_name = "HD-Audio Generic at 0xfd900000 irq 331"
 alsa.driver_name = "snd_hda_intel"
 device.bus_path = "pci-0000:12:00.3"
 sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:12:00.3/sound/card2"
 device.bus = "pci"
 device.vendor.id = "1022"
 device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
 device.product.id = "1457"
 device.string = "front:2"
 device.buffering.buffer_size = "65536"
 device.buffering.fragment_size = "32768"
 device.access_mode = "mmap+timer"
 device.profile.name = "analog-stereo"
 device.profile.description = "Analog Stereo"
 device.description = "HD-Audio Generic Analog Stereo"
 alsa.mixer_name = "Realtek ALC1220"
 alsa.components = "HDA:10ec1220,18491220,00100003"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-pci"
 Ports:
 analog-input-front-mic: Vorderes Mikrofon (priority: 8500, not available)
 analog-input-rear-mic: Rückwärtiges Mikrofon (priority: 8200, not available)
 analog-input-linein: Eingang (priority: 8100, available)
 Aktiver Port: analog-input-linein
 Formate:
 pcm


pactl list sinks
Ziel #0
 Status: RUNNING
 Name: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo
 Beschreibung: DigiHug USB Audio Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 7
 Stumm: nein
 Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 65536 / 100% / 0,00 dB
 Quellen-Monitor: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo.monitor
 Latenz: 46296 usec, eingestellt 40000 usec
 Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 alsa.resolution_bits = "16"
 device.api = "alsa"
 device.class = "sound"
 alsa.class = "generic"
 alsa.subclass = "generic-mix"
 alsa.name = "USB Audio"
 alsa.id = "USB Audio"
 alsa.subdevice = "0"
 alsa.subdevice_name = "subdevice #0"
 alsa.device = "0"
 alsa.card = "1"
 alsa.card_name = "DigiHug USB Audio"
 alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed"
 alsa.driver_name = "snd_usb_audio"
 device.bus_path = "pci-0000:11:00.3-usb-0:2:1.1"
 sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:11:00.3/usb3/3-2/3-2:1.1/sound/card1"
 udev.id = "usb-FiiO_DigiHug_USB_Audio-01"
 device.bus = "usb"
 device.vendor.id = "1852"
 device.vendor.name = "GYROCOM C&C Co., LTD"
 device.product.id = "7022"
 device.product.name = "DigiHug USB Audio"
 device.serial = "FiiO_DigiHug_USB_Audio"
 device.string = "front:1"
 device.buffering.buffer_size = "352800"
 device.buffering.fragment_size = "176400"
 device.access_mode = "mmap+timer"
 device.profile.name = "analog-stereo"
 device.profile.description = "Analog Stereo"
 device.description = "DigiHug USB Audio Analog Stereo"
 alsa.mixer_name = "USB Mixer"
 alsa.components = "USB1852:7022"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-usb"
 Ports:
 analog-output: Analoge Ausgabe (priority: 9900)
 Aktiver Port: analog-output
 Formate:
 pcm


My basic audio setup:



Inputs:



  • audio coming from second monitor into computer line-in

  • all other audio is coming from the system / applications / music

Output:



  • USB-DAC/AMP which my headphone is connected to





sound kubuntu pulseaudio alsa







share|improve this question













I tried to get audio from my second monitor into Kubuntu through the line-in stereo jack which is now basically working after fiddling with alsamixer (un-mute Line & getting volume settings right) and adding load-module module-loopback to my /etc/pulse/default.pa



My current and biggest problem with this setup is the crackling sound / noise I get while playing audio - even after adjusting the line-in volume to ~5% (everything above that is just painful) and increasing volume on my external amplifier. (Under Windows 10 I have no crackling / sound problems with this setup even with line-in volume of 100%)



What I've tried so far:



1) Having load-module module-udev-detect tsched=0 (adding the tsched=0)
in /etc/pulse/default.pa for deactivating timer-based scheduling in PulseAudio which helped other people with crackling sound.



2) Combining 1) with modifications in /etc/pulse/daemon.conf for setting the default fragment number and buffer size in PulseAudio (like here: https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Static_noise_when_using_headphones)



3) Explicitly writing the loopback source & sink with its rate and channels:



load-module module-loopback source=alsa_input.pci-0000_12_00.3.analog-stereo sink=alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo rate=44100 channels=2


And 4) modifying /etc/modprobe.d/alsa-base.conf with options snd-hda-intel position_fix=1 or options snd-hda-intel position_fix=2 which was suggested here: https://wiki.ubuntu.com/Audio/PositionReporting



My system:



  • Kubuntu 17.10, 64 Bit

  • Kernel-Version 4.13.0-36-generic

  • AMD Ryzen 7 1700X CPU

  • 16 GB RAM

  • ASRock X370 Taichi motherboard

  • Nvidia GTX 1070 GPU

lspci -nnk | grep -i audio -A2
0e:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1)
 Subsystem: CardExpert Technology GP104 High Definition Audio Controller [10b0:1b81]
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd_hda_intel
--
12:00.3 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Device [1022:1457]
 Subsystem: ASRock Incorporation Device [1849:1220]
 Kernel driver in use: snd_hda_intel


cat /proc/asound/cards
 0 [NVidia ]: HDA-Intel - HDA NVidia
 HDA NVidia at 0xfd080000 irq 329 
 1 [Audio ]: USB-Audio - DigiHug USB Audio 
 FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed
 2 [Generic ]: HDA-Intel - HD-Audio Generic
 HD-Audio Generic at 0xfd900000 irq 331


pactl list sources
Quelle #0
 Status: RUNNING
 Name: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo.monitor
 Beschreibung: Monitor of DigiHug USB Audio Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 7
 Stumm: ja
 Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 65536 / 100% / 0,00 dB
 Ziel-Monitor: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo
 Latenz: 0 usec, eingestellt 40000 usec
 Flags: DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 device.description = "Monitor of DigiHug USB Audio Analog Stereo"
 device.class = "monitor"
 alsa.card = "1"
 alsa.card_name = "DigiHug USB Audio"
 alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed"
 alsa.driver_name = "snd_usb_audio"
 device.bus_path = "pci-0000:11:00.3-usb-0:2:1.1"
 sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:11:00.3/usb3/3-2/3-2:1.1/sound/card1"
 udev.id = "usb-FiiO_DigiHug_USB_Audio-01"
 device.bus = "usb"
 device.vendor.id = "1852"
 device.vendor.name = "GYROCOM C&C Co., LTD"
 device.product.id = "7022"
 device.product.name = "DigiHug USB Audio"
 device.serial = "FiiO_DigiHug_USB_Audio"
 device.string = "1"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-usb"
 Formate:
 pcm

Quelle #1
 Status: RUNNING
 Name: alsa_input.pci-0000_12_00.3.analog-stereo
 Beschreibung: HD-Audio Generic Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 8
 Stumm: nein
 Lautstärke: front-left: 6554 / 10% / -60,00 dB, front-right: 6554 / 10% / -60,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 6554 / 10% / -60,00 dB
 Ziel-Monitor: k. A.
 Latenz: 30 usec, eingestellt 40000 usec
 Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 alsa.resolution_bits = "16"
 device.api = "alsa"
 device.class = "sound"
 alsa.class = "generic"
 alsa.subclass = "generic-mix"
 alsa.name = "ALC1220 Analog"
 alsa.id = "ALC1220 Analog"
 alsa.subdevice = "0"
 alsa.subdevice_name = "subdevice #0"
 alsa.device = "0"
 alsa.card = "2"
 alsa.card_name = "HD-Audio Generic"
 alsa.long_card_name = "HD-Audio Generic at 0xfd900000 irq 331"
 alsa.driver_name = "snd_hda_intel"
 device.bus_path = "pci-0000:12:00.3"
 sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:12:00.3/sound/card2"
 device.bus = "pci"
 device.vendor.id = "1022"
 device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
 device.product.id = "1457"
 device.string = "front:2"
 device.buffering.buffer_size = "65536"
 device.buffering.fragment_size = "32768"
 device.access_mode = "mmap+timer"
 device.profile.name = "analog-stereo"
 device.profile.description = "Analog Stereo"
 device.description = "HD-Audio Generic Analog Stereo"
 alsa.mixer_name = "Realtek ALC1220"
 alsa.components = "HDA:10ec1220,18491220,00100003"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-pci"
 Ports:
 analog-input-front-mic: Vorderes Mikrofon (priority: 8500, not available)
 analog-input-rear-mic: Rückwärtiges Mikrofon (priority: 8200, not available)
 analog-input-linein: Eingang (priority: 8100, available)
 Aktiver Port: analog-input-linein
 Formate:
 pcm


pactl list sinks
Ziel #0
 Status: RUNNING
 Name: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo
 Beschreibung: DigiHug USB Audio Analog Stereo
 Treiber: module-alsa-card.c
 Abtastwert-Angabe: s16le 2ch 44100Hz
 Kanalzuordnung: front-left,front-right
 Besitzer-Modul: 7
 Stumm: nein
 Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
 Verteilung 0,00
 Basis-Lautstärke: 65536 / 100% / 0,00 dB
 Quellen-Monitor: alsa_output.usb-FiiO_DigiHug_USB_Audio-01.analog-stereo.monitor
 Latenz: 46296 usec, eingestellt 40000 usec
 Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
 Eigenschaften:
 alsa.resolution_bits = "16"
 device.api = "alsa"
 device.class = "sound"
 alsa.class = "generic"
 alsa.subclass = "generic-mix"
 alsa.name = "USB Audio"
 alsa.id = "USB Audio"
 alsa.subdevice = "0"
 alsa.subdevice_name = "subdevice #0"
 alsa.device = "0"
 alsa.card = "1"
 alsa.card_name = "DigiHug USB Audio"
 alsa.long_card_name = "FiiO DigiHug USB Audio at usb-0000:11:00.3-2, full speed"
 alsa.driver_name = "snd_usb_audio"
 device.bus_path = "pci-0000:11:00.3-usb-0:2:1.1"
 sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:11:00.3/usb3/3-2/3-2:1.1/sound/card1"
 udev.id = "usb-FiiO_DigiHug_USB_Audio-01"
 device.bus = "usb"
 device.vendor.id = "1852"
 device.vendor.name = "GYROCOM C&C Co., LTD"
 device.product.id = "7022"
 device.product.name = "DigiHug USB Audio"
 device.serial = "FiiO_DigiHug_USB_Audio"
 device.string = "front:1"
 device.buffering.buffer_size = "352800"
 device.buffering.fragment_size = "176400"
 device.access_mode = "mmap+timer"
 device.profile.name = "analog-stereo"
 device.profile.description = "Analog Stereo"
 device.description = "DigiHug USB Audio Analog Stereo"
 alsa.mixer_name = "USB Mixer"
 alsa.components = "USB1852:7022"
 module-udev-detect.discovered = "1"
 device.icon_name = "audio-card-usb"
 Ports:
 analog-output: Analoge Ausgabe (priority: 9900)
 Aktiver Port: analog-output
 Formate:
 pcm


My basic audio setup:



Inputs:



  • audio coming from second monitor into computer line-in

  • all other audio is coming from the system / applications / music

Output:



  • USB-DAC/AMP which my headphone is connected to





sound kubuntu pulseaudio alsa




sound kubuntu pulseaudio alsa






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 13 at 16:12









Vorkosik

11




11











  • What kernel are you running? I had a similar problem a while ago with a Z97 motherboard, and updating the kernel fixed it for me (at the time the Z97 was a new board/chipset). Perhaps try upgrading to the 4.15 kernel?
    – Vanessa Deagan
    Mar 13 at 17:38










  • At the moment I'm using 4.13.0-36 (generic, newest from the standard repo). I'm not that versed in Linux, but from what I gathered upgrading to a mainline kernel is kind of risky or rather 'advanced stuff' and can probably excavate/generate new problems? My motherboard is not that new (first Ryzen-generation) so I'd hope any normal fixes should already be included in the current kernel. But nevertheless I thank you for the suggestion! :)
    – Vorkosik
    Mar 14 at 12:30










  • Run in terminal alsamixer, hit f5 to select all controls and mute Mic Boost (+20db) if enabled.
    – Michal Przybylowicz
    Mar 14 at 22:09










  • Thanks for the suggestion - I already did that first whilst trying to get the line-in to work. Currently I have all boosts (2x Mic Boosts and 1x Line Boost) at '0' (no mute-option there) and a setting named Capture at 5 (the aforementioned 5% volume). In fact I tried muting all options not related to line-in but no constellation got rid of the problem.
    – Vorkosik
    Mar 15 at 0:12
















  • What kernel are you running? I had a similar problem a while ago with a Z97 motherboard, and updating the kernel fixed it for me (at the time the Z97 was a new board/chipset). Perhaps try upgrading to the 4.15 kernel?
    – Vanessa Deagan
    Mar 13 at 17:38










  • At the moment I'm using 4.13.0-36 (generic, newest from the standard repo). I'm not that versed in Linux, but from what I gathered upgrading to a mainline kernel is kind of risky or rather 'advanced stuff' and can probably excavate/generate new problems? My motherboard is not that new (first Ryzen-generation) so I'd hope any normal fixes should already be included in the current kernel. But nevertheless I thank you for the suggestion! :)
    – Vorkosik
    Mar 14 at 12:30










  • Run in terminal alsamixer, hit f5 to select all controls and mute Mic Boost (+20db) if enabled.
    – Michal Przybylowicz
    Mar 14 at 22:09










  • Thanks for the suggestion - I already did that first whilst trying to get the line-in to work. Currently I have all boosts (2x Mic Boosts and 1x Line Boost) at '0' (no mute-option there) and a setting named Capture at 5 (the aforementioned 5% volume). In fact I tried muting all options not related to line-in but no constellation got rid of the problem.
    – Vorkosik
    Mar 15 at 0:12















What kernel are you running? I had a similar problem a while ago with a Z97 motherboard, and updating the kernel fixed it for me (at the time the Z97 was a new board/chipset). Perhaps try upgrading to the 4.15 kernel?
– Vanessa Deagan
Mar 13 at 17:38




What kernel are you running? I had a similar problem a while ago with a Z97 motherboard, and updating the kernel fixed it for me (at the time the Z97 was a new board/chipset). Perhaps try upgrading to the 4.15 kernel?
– Vanessa Deagan
Mar 13 at 17:38












At the moment I'm using 4.13.0-36 (generic, newest from the standard repo). I'm not that versed in Linux, but from what I gathered upgrading to a mainline kernel is kind of risky or rather 'advanced stuff' and can probably excavate/generate new problems? My motherboard is not that new (first Ryzen-generation) so I'd hope any normal fixes should already be included in the current kernel. But nevertheless I thank you for the suggestion! :)
– Vorkosik
Mar 14 at 12:30




At the moment I'm using 4.13.0-36 (generic, newest from the standard repo). I'm not that versed in Linux, but from what I gathered upgrading to a mainline kernel is kind of risky or rather 'advanced stuff' and can probably excavate/generate new problems? My motherboard is not that new (first Ryzen-generation) so I'd hope any normal fixes should already be included in the current kernel. But nevertheless I thank you for the suggestion! :)
– Vorkosik
Mar 14 at 12:30












Run in terminal alsamixer, hit f5 to select all controls and mute Mic Boost (+20db) if enabled.
– Michal Przybylowicz
Mar 14 at 22:09




Run in terminal alsamixer, hit f5 to select all controls and mute Mic Boost (+20db) if enabled.
– Michal Przybylowicz
Mar 14 at 22:09












Thanks for the suggestion - I already did that first whilst trying to get the line-in to work. Currently I have all boosts (2x Mic Boosts and 1x Line Boost) at '0' (no mute-option there) and a setting named Capture at 5 (the aforementioned 5% volume). In fact I tried muting all options not related to line-in but no constellation got rid of the problem.
– Vorkosik
Mar 15 at 0:12




Thanks for the suggestion - I already did that first whilst trying to get the line-in to work. Currently I have all boosts (2x Mic Boosts and 1x Line Boost) at '0' (no mute-option there) and a setting named Capture at 5 (the aforementioned 5% volume). In fact I tried muting all options not related to line-in but no constellation got rid of the problem.
– Vorkosik
Mar 15 at 0:12















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