Sound not working on ubuntu 20.04

at the very beginning sound was working using the motherboard line out jack. A few days ago the motherboard line out jack went bad. The sound is awfully robotic and unintelligible. The jack on the case front panel gives no sound at all (I hadn't tried it before, because I was using the motherboard line out on the back).

Computer is 3 weeks old:

I've tried many things: pavucontrols, reloading/restarting alsa and pulseaudio, adding lines like options snd-hda-intel model=auto, installing graphics card driver but nothing seems to work.

A few additional info:

Ubuntu

$ lsb_release -a | grep Description
Description: Ubuntu 20.04.4 LTS

Kernel

$ uname -a
Linux dodo 5.13.0-37-generic #42~20.04.1-Ubuntu SMP Tue Mar 15 15:44:28 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Mobo

$ sudo dmidecode -t 2 | grep "Manufacturer\|Product"
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: Z690 AORUS PRO

Audio

$ lspci -v | grep Audio
00:1f.3 Audio device: Intel Corporation Device 7ad0 (rev 11)
01:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio Controller (rev a1) Subsystem: Gigabyte Technology Co., Ltd GP107GL High Definition Audio Controller

Graphics card

$ cat /proc/asound/card*/codec* | grep Codec
Codec: Nvidia GPU 80 HDMI/DP

Update: additional information

$ pactl list sinks
Sink #5 State: SUSPENDED Name: alsa_output.usb-Generic_USB_Audio-00.analog-stereo Description: USB Audio Analog Stereo Driver: module-alsa-card.c Sample Specification: s16le 2ch 44100Hz Channel Map: front-left,front-right Owner Module: 26 Mute: no Volume: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB balance 0,00 Base Volume: 65536 / 100% / 0,00 dB Monitor Source: alsa_output.usb-Generic_USB_Audio-00.analog-stereo.monitor Latency: 0 usec, configured 0 usec Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY Properties: 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 = "2" alsa.card_name = "USB Audio" alsa.long_card_name = "Generic USB Audio at usb-0000:00:14.0-4, high speed" alsa.driver_name = "snd_usb_audio" device.bus_path = "pci-0000:00:14.0-usb-0:4:1.0" sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.0/sound/card2" udev.id = "usb-Generic_USB_Audio-00" device.bus = "usb" device.vendor.id = "0414" device.vendor.name = "Giga-Byte Technology Co., Ltd" device.product.id = "a012" device.product.name = "USB Audio" device.serial = "Generic_USB_Audio" device.string = "front:2" 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 = "USB Audio Analog Stereo" module-udev-detect.discovered = "1" device.icon_name = "audio-card-usb" Ports: analog-output-speaker: Speakers (priority: 10000, not available) analog-output-headphones: Headphones (priority: 9900, available) Active Port: analog-output-headphones Formats: pcm

$ pactl list cards
Card #0 Name: alsa_card.pci-0000_01_00.1 Driver: module-alsa-card.c Owner Module: 7 Properties: alsa.card = "1" alsa.card_name = "HDA NVidia" alsa.long_card_name = "HDA NVidia at 0x53080000 irq 17" alsa.driver_name = "snd_hda_intel" device.bus_path = "pci-0000:01:00.1" sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1" device.bus = "pci" device.vendor.id = "10de" device.vendor.name = "NVIDIA Corporation" device.product.id = "0fb9" device.product.name = "GP107GL High Definition Audio Controller" device.string = "1" device.description = "GP107GL High Definition Audio Controller" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" Profiles: output:hdmi-stereo: Digital Stereo (HDMI) Output (sinks: 1, sources: 0, priority: 5900, available: no) output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (sinks: 1, sources: 0, priority: 800, available: no) output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (sinks: 1, sources: 0, priority: 800, available: no) output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (sinks: 1, sources: 0, priority: 5700, available: no) output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (sinks: 1, sources: 0, priority: 5700, available: no) output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-stereo-extra3: Digital Stereo (HDMI 4) Output (sinks: 1, sources: 0, priority: 5700, available: no) output:hdmi-surround-extra3: Digital Surround 5.1 (HDMI 4) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-surround71-extra3: Digital Surround 7.1 (HDMI 4) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-stereo-extra4: Digital Stereo (HDMI 5) Output (sinks: 1, sources: 0, priority: 5700, available: no) output:hdmi-surround-extra4: Digital Surround 5.1 (HDMI 5) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-surround71-extra4: Digital Surround 7.1 (HDMI 5) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-stereo-extra5: Digital Stereo (HDMI 6) Output (sinks: 1, sources: 0, priority: 5700, available: no) output:hdmi-surround-extra5: Digital Surround 5.1 (HDMI 6) Output (sinks: 1, sources: 0, priority: 600, available: no) output:hdmi-surround71-extra5: Digital Surround 7.1 (HDMI 6) Output (sinks: 1, sources: 0, priority: 600, available: no) off: Off (sinks: 0, sources: 0, priority: 0, available: yes) Active Profile: off Ports: hdmi-output-0: HDMI / DisplayPort (priority: 5900, latency offset: 0 usec, not available) Properties: device.icon_name = "video-display" Part of profile(s): output:hdmi-stereo, output:hdmi-surround, output:hdmi-surround71 hdmi-output-1: HDMI / DisplayPort 2 (priority: 5800, latency offset: 0 usec, not available) Properties: device.icon_name = "video-display" Part of profile(s): output:hdmi-stereo-extra1, output:hdmi-surround-extra1, output:hdmi-surround71-extra1 hdmi-output-2: HDMI / DisplayPort 3 (priority: 5700, latency offset: 0 usec, not available) Properties: device.icon_name = "video-display" Part of profile(s): output:hdmi-stereo-extra2, output:hdmi-surround-extra2, output:hdmi-surround71-extra2 hdmi-output-3: HDMI / DisplayPort 4 (priority: 5600, latency offset: 0 usec, not available) Properties: device.icon_name = "video-display" Part of profile(s): output:hdmi-stereo-extra3, output:hdmi-surround-extra3, output:hdmi-surround71-extra3 hdmi-output-4: HDMI / DisplayPort 5 (priority: 5500, latency offset: 0 usec, not available) Properties: device.icon_name = "video-display" Part of profile(s): output:hdmi-stereo-extra4, output:hdmi-surround-extra4, output:hdmi-surround71-extra4 hdmi-output-5: HDMI / DisplayPort 6 (priority: 5400, latency offset: 0 usec, not available) Properties: device.icon_name = "video-display" Part of profile(s): output:hdmi-stereo-extra5, output:hdmi-surround-extra5, output:hdmi-surround71-extra5
Card #1 Name: alsa_card.usb-Generic_USB_Audio-00 Driver: module-alsa-card.c Owner Module: 26 Properties: alsa.card = "2" alsa.card_name = "USB Audio" alsa.long_card_name = "Generic USB Audio at usb-0000:00:14.0-4, high speed" alsa.driver_name = "snd_usb_audio" device.bus_path = "pci-0000:00:14.0-usb-0:4:1.0" sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.0/sound/card2" udev.id = "usb-Generic_USB_Audio-00" device.bus = "usb" device.vendor.id = "0414" device.vendor.name = "Giga-Byte Technology Co., Ltd" device.product.id = "a012" device.product.name = "USB Audio" device.serial = "Generic_USB_Audio" device.string = "2" device.description = "USB Audio" module-udev-detect.discovered = "1" device.icon_name = "audio-card-usb" Profiles: input:analog-stereo: Analog Stereo Input (sinks: 0, sources: 1, priority: 65, available: no) input:iec958-stereo: Digital Stereo (IEC958) Input (sinks: 0, sources: 1, priority: 32823, available: yes) output:analog-stereo: Analog Stereo Output (sinks: 1, sources: 0, priority: 39268, available: yes) output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (sinks: 1, sources: 1, priority: 6565, available: yes) output:analog-stereo+input:iec958-stereo: Analog Stereo Output + Digital Stereo (IEC958) Input (sinks: 1, sources: 1, priority: 39323, available: yes) output:iec958-stereo: Digital Stereo (IEC958) Output (sinks: 1, sources: 0, priority: 38268, available: yes) output:iec958-stereo+input:analog-stereo: Digital Stereo (IEC958) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5565, available: yes) output:iec958-stereo+input:iec958-stereo: Digital Stereo Duplex (IEC958) (sinks: 1, sources: 1, priority: 38323, available: yes) off: Off (sinks: 0, sources: 0, priority: 0, available: yes) Active Profile: output:analog-stereo+input:iec958-stereo Ports: analog-input-mic: Microphone (priority: 8700, latency offset: 0 usec, not available) Properties: device.icon_name = "audio-input-microphone" Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:iec958-stereo+input:analog-stereo analog-input-linein: Line In (priority: 8100, latency offset: 0 usec, not available) Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:iec958-stereo+input:analog-stereo iec958-stereo-input: Digital Input (S/PDIF) (priority: 0, latency offset: 0 usec) Part of profile(s): input:iec958-stereo, output:analog-stereo+input:iec958-stereo, output:iec958-stereo+input:iec958-stereo analog-output-speaker: Speakers (priority: 10000, latency offset: 0 usec, not available) Properties: device.icon_name = "audio-speakers" Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo, output:analog-stereo+input:iec958-stereo analog-output-headphones: Headphones (priority: 9900, latency offset: 0 usec, available) Properties: device.icon_name = "audio-headphones" Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo, output:analog-stereo+input:iec958-stereo iec958-stereo-output: Digital Output (S/PDIF) (priority: 0, latency offset: 0 usec) Part of profile(s): output:iec958-stereo, output:iec958-stereo+input:analog-stereo, output:iec958-stereo+input:iec958-stereo

Any help is greatly appreciated.

8

3 Answers

One of the recent kernel updates seems to have introduced an issue with some audio devices. The solution is to modify PulseAudio’s default sample rate in daemon.conf.

Here’s how:

1. Open Terminal (if it’s not already open)

2. Open PulseAudio’s configuration file:

   sudo {editor of choice} /etc/pulse/daemon.conf

   ^{Note: Be sure to replace {editor of choice} with your editor of choice.}

3. Find the line that looks like this:

   ; default-sample-rate = 44100

   Change it to this:

   default-sample-rate = 48000

   ^{Note: The preceding ; is gone. This is important.}

4. Save the file and exit

5. Restart PulseAudio:

   systemctl --user restart pulseaudio

This should resolve your audio problems 👍🏻

6

I am not sure this is an answer or not. I tried these things and the noise is gone. (From Arch Pulseaudio manual)

1. Get rid of Timer based scheduler from sound server. Add tsched=0 to the udev module loader.

/etc/pulse/default.pa

load-module module-udev-detect tsched=0

2. Enable Echo/Noise-Cancellation

   /etc/pulse/default.pa

Add this line

### Enable Echo/Noise-Cancellation load-module module-echo-cancel

Then kill pulseaudio and restart

pulseaudio -k
in case, you want to remove current settings mv .pulse .pulse_bak
pulseaudio --start

Perhaps this also was effective.
systemctl --user start pulseaudio.service

3. USB DAC plugged into another port and restart system.

Note: I do not know which one was actually worked.

Downgrading to 5.13.0-35 fixed popping noise with XRUN on JACK from USB interface.

Related Bug:

1

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