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Questions tagged [alsa]

ALSA (Advanced Linux Sound Architecture ) is an API of audio functions for the linux platform.

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mpd stopped working under systemd, works when run on the command line

Yesterday my mpd stopped working. It has worked for several months until now, but when choosing music in ncmpcpp no sound would be output. Today I tried stopping mpd: $ sudo systemctl stop mpd $ ...
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22 views

Does using plughw plugin in ALSA introduce latency?

The plughw plugin which performs channel duplication, sample value conversion, and resampling when required. Does this ALSA plugin introduce some latency side effects, since it does some software ...
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34 views

Can't get sound on Debian Jessie, Xfce desktop environment

Debian Jessie installed on external USB SSD drive. Xfce desktop environment. kernel release 3.16.0-8-686-pae, SMP Debian 3.16.64-2, Hardware architecture i686 (32-bit system) I can't get sound ...
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33 views

No Sound on onboard audio: Realtek ALC888-VD

I have installed mint and have been unable to get sound working on the internal audio working, there is no sound. The HDMI sound works, but this no use for me as I cannot connect and HDMI device on ...
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1answer
18 views

How to configure audio volume change during login

After a recent update, when I now log in to my system, my audio volume control suddenly goes to 100% and nearly deafens me. This appears to be something to do with (I guess) systemd changing the ...
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7 views

Volume applets control only one channel of envy24

I have a M-Audio Audiophile 2496 (Envy24) soundcard running under plain alsa (no pulseaudio). I tried volume controls for cairo-dock and gkrellm, but they only control one channel. The cairo-dock ...
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2answers
26 views

Intel hda audio issue

Pavucontrol don't see the intel sound card but alsamixer do, the sound work lightly at launch and stop, I need to be able to use my nvidia hdmi sound output when needed and the intel hda is my main ...
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2answers
78 views

I need to know how to get sound in Linux to do something specific

What I want is to separate two different applications' sound output from each other, and pipe that into a sound editing program. What I need is a way to add an entry in record that outputs into the ...
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13 views

Pulseaudio does not find my docking station's audio

Short: my updated pulseaudio does not find the USB audio device of my docking station. Debian Stretch, XPS 13 9360, docking station WD15. I just built pulseaudio from source, and got this version: $...
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1answer
52 views

mpd with bluetooth speaker has no sound

My environment has two audio output: HDMI and Bluetooth speaker. Usually both of them work correctly. For example, #this plays sound via bluetooth speaker $ aplay -D default jingle.wav #this plays ...
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57 views

Debian 9.9 Sound Suddenly Nonfunctional

Am using Debian 9.9 with Cinnamon 3.2.7. Linux Kernel 4.9.0-9-686-pae. Booted machine fresh a couple days ago, without any major changes to software or drivers to speak of, and suddenly sound does not ...
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1answer
49 views

Split Front/Rear/Aux on Mic/Input ports on one sound card to different capture sources (Pulseaudio/ALSA)

I have an Asus Xonar DG installed in my Pop OS (Ubuntu 19.04 flavor) machine. I was wondering if I am able to separate the different capture sources into discrete inputs for use in Jack and streaming ...
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8 views

Prevent applications from changing alsamixer capture levels

How do I prevent applications from changing alsamixer capture levels? Chromium keeps changing my mic's gain.
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86 views

ALSA mono configuration not working

I installed a new PCI based soundcard in my PC. It has 8 S/PDIF based I/O pairs with each line numbered 1 to 8 for input as well as output. And I'm trying to use input lines 3, 5, 7 for input (mics) ...
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18 views

Record sound from USB Tablet microphone with ALSA on Gentoo

I fail at recording sound with a tablets microphone that is connected via USB to my Gentoo Linux. I checked my settings and see tha USB Microphone is detected. arecord --list-devices **** List of ...
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1answer
140 views

Using and configuring ALSA plugins dmix and dsnoop for stereo play and capture

I installed a new PCI based soundcard in my PC. It has 8 S/PDIF based I/O pairs with each line numbered 1 to 8 for input as well as output. And I'm trying to use lines 3-8 for input (mics) and 3-8 for ...
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74 views

Control Pulseaudio LineOut/Headphone volume separately

The default PulseAudio behavior is as follows: First we connect something to the back panel of our MOBO, normally this would be speakers, then we connect something to the front panel, normally ...
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41 views

How to force PulseAudio to recognize my audio device

I have a Lenovo laptop. For about two years my Focusrite Saffire audio interface has worked correctly and shown up in the "Output" options of the Sound Settings. Now, it not randomly started to now ...
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13 views

CentOS7.5 + Alsa + ALC892 master volume change issue

using CentOS7.5 with ALC892. Pulsaudio is uninstalled, only Alsa is used on its own (e.g aplay + amixer). Whenever I change the master volume on sound card, it takes ~30 second while the volume change ...
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1answer
39 views

Sound doesn't work after migrating archlinux32 to new hardware

After changing a hardware and booting up same operating system(archlinux32) on it the sound doesn't work at all. On old hardware it worked well. When migrated: Booted up a live ISO Ran mkinitcpio -p ...
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1answer
62 views

How to ask ALSA to output to a specific Pulseaudio sink?

Various examples on the web, as well as the output of aplay -L, indicate that I have an ALSA device named "pulse" which I can use as a shim to let ALSA-compliant applications output to Pulseaudio. ...
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83 views

Trying to make loopback device as Alsa-to-Jack bridge

Using this guide i trying to make loopback device as Alsa-to-Jack bridge. Everything fine until those lines # capture client alsa_in -j cloop -dcloop # playback client alsa_out -j ploop -dploop On ...
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1answer
106 views

Asterisks locks ALSA device if chan_alsa is loaded

I am implementing an extension 900 which routes the audio to ALSA device.  I am also using mpd, which plays music through ALSA. Asterisk 15, OpenWrt 18.06 mpd.conf: log_file "syslog" ...
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1answer
21 views

Port error on Ardour

I’m running Ubuntu Studio 18.10. In Ardour 5.12,.0-3. connecting to Jack, or ALSA, when I close a project then try to open another one, I get an error message that says “unable to create port: failed ...
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1answer
36 views

Sox format for stream with sample spec 's16le 1ch 16000Hz', channel map 'mono'

I'm trying to pipe audio to sox and I get Error "sox FAIL formats: bad input format for `-': sampling rate was not specified" parec -d alsa_output.pci-0000_00_1b.0.analog-stereo.monitor --rate=...
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109 views

Loop audio file from the command line (gapless) or into new file

The only command line solution for gapless playback I found so far (working with ALSA and JACK) is moc (»music on console«). While I'm still searching for a simpler way I was wondering if it is ...
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1answer
160 views

How to enable Pulseaudio for Wine on Fedora 29?

I have struggled to find an answer to this, so I wanted to share what I came up with. In my 32-bit wine prefix on Fedora 29, I have been unable to enable audio. I installed the wine-pulseaudio and ...
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34 views

gst123 - select alsa device for playback with external USB soundcard

I'm truing to get my audio played back by an external USB device, using the GStreamer based command line media player gst123 which comes with the option: -a, --audio-output=<driver>[=<dev>...
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17 views

Possible bad install of alsamixer utility

Kernel version: 2.6.35.14 running (embedded) on an ARM MCIMX51. The system is rather outdated and old (ASoC). I am getting odd behavior with sound. I already defaulted asound config file (asound.play) ...
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139 views

Specify alsa device name or aloop for system ouput audio to be used as input in ffmpeg command

I am using Debian 9 with its version of ffmpeg. This is my ffmpeg command I use to screen record: ffmpeg -thread_queue_size 4096 -f alsa -i plughw:CARD=Device,DEV=0 -thread_queue_size 4096 \ -f alsa -...
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78 views

Alsamixer-Equalizer with Kodi, HifiberryAmp+ and Raspi does not work

I am using a Raspberry Pi with Kodi and a HifiBerry Amp+ as a stereo. Everything works great so far, but I am lacking the possibility to use an equalizer to adjust bass and treble. I want to use ...
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38 views

Noise in beginning of alsa application

I have ALSA driver for capture device which works fine with VLC. when I try to capture and render using own application having some issues. Issue is:When I start play, it has some noise in beginning ...
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1answer
53 views

MPD gives no audio from HDMI on PI-zero

I run MPD on a PI-zero. When configured the audio systen to analog (3.5mm jack) it runs ok. But when changed to HDMI and a HDMI splitter no sound comes out. When using “aplay” or “speaker-test” all is ...
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1answer
64 views

ALSA behaviour on stereo mic during process suspend

Goal Suspend a Python process listening to pcm.record_right (for Google-Assistant) Continue using pcm.record_left in a different python process (for Snowboy hotword detection) Use Case I want to ...
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394 views

Why alsa can't play sounds (Playback open error: -16,Device or resource busy)?

I built a new system based around the ASUS ROG STRIX B350-F, and transferred my hard drive from the old system without changing anything. At first, I got no sound due pulseaudio selecting the HDMI ...
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1answer
44 views

ALSA Check if spdif plugged in / active

Is there any way in alsa / libasound to check whether the SPDIF In actually has a device connected? I'm currently using a Raspberry Pi with an USB sound card to merge the audio from my PC coming in ...
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47 views

No sound in Debian 9 for most of the start ups of the system (sound card is recognized)

I installed Debian 9 64-bit a couple days ago in a Compaq Presario desktop. Everything was going ok until I found that there was no sound. Initially this was solved with a reboot. Unfortunately in ...
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14 views

Is my Speechmatic USB MultiAdapter recognized by the kernel?

Alsamixer shows my Speechmatic, but it doesn't work in any application. I have .asoundrc set to device 1, and it works with other USB sound cards, like my Logitech, but not this one. I think I have ...
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1answer
93 views

Alsa and alsactl: init, store and default configuration of control file

The target kernel is: 2.6.35.14 (old) and its running on an embedded platform and the codec is a wm8753. I am trying to understand how the alsactl system works. I found a file asound.play @ etc/alsa ...
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83 views

Alsa - dmix, softvol config?

I want to acheive the following: A USB DAC is connected to a linux box. So far no issue... card 1: Device [USB Audio Device], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: ...
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141 views

PopOS - Headphones making Heart Beat sound while plugged in

Since this morning my headphones have been making a "Heart Beat" thumping noise while plugged in. No sound plays through them. Sound plays normally through laptop speakers. I am running Pop!_OS ...
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93 views

ALSA Lib and Fork Support Errors in Personal assistant -Python - Raspbian [closed]

My personal assistant built on python was working fine till few days ago. Now it is producing these errors. I am working on raspberry pi with OS Raspbian. E1123 17:07:41.305739108 3048 fork_posix....
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314 views

How can I get my laptop's internal speakers to work correctly on NixOS?

As far as I can tell, the subwoofers on my Lenovo Yoga C930 aren't being engaged at all on NixOS, which results in a really flat sound. The speakers sound great when I reboot into Windows 10. How can ...
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123 views

ALSA - Sound stopped working in Arch for USB sound card after upgrading KDE from 5.7 to 5.14

Yesterday, I upgraded KDE from 5.7 to 5.14 after having display issues because it turns out I had installed the wrong package. I had some trouble initially getting sound to work in 5.7, but I finally ...
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1answer
278 views

Sound issues after recent 4.18 kernel on Spectre x360

After upgrading to the 4.18 Linux kernel using Debian sid, I've been dealing with some sound issues that I haven't before the upgrade. After the laptop suspends, majority of the time (but not always) ...
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1answer
406 views

Debian dummy output alsa hooks failed

yesterday my audio working just fine. But, today after I upgrade packages using dist-upgrade pulseaudio detects no cards and just show dummy output in volume control. After some research I thought it'...
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2answers
429 views

Multiple problems with alsamixer after opening up laptop (no problems in other OSs)

This randomly started happening today. Yesterday I opened up my laptop to clean it out. I also disconnected the CMOS battery cable by mistake. When I open alsamixer in a terminal, the following ...
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2answers
1k views

Audacity doesn't work with pulseaudio anymore

UPDATE: Today's upgrade to alsa-lib-1.1.7-2 fixed the issue. (2018-11-23) Arch Linux, up-to-date. As so often, a -Syu upgrade broke things again. This time it's audacity. Usually audacity, and any ...
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148 views

What is the meaning of fragments and fragment_size in PulseAudio ALSA modules?

Following advice on a blog post called Pulseaudio And Latency, I tried loading module-alsa-sink with special fragments and fragment_size parameters to ensure low latency. However, I'm not sure what ...
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1answer
38 views

About ALSA sound

The aplay command can determine the correct card and slot to play the sound. Can I use aplay before configuring /etc/asound.conf or .asoundrc? Or is it necessary to write this configuration before ...