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

learn more… | top users | synonyms

1
vote
0answers
10 views

Edit audio output before playback

I want to low level edit the output of ALSA sound system. I should sniff the audio output, change it before playback and then play it. I saw /dev/snd/OUTDEVICE but I think it is write only. Which is ...
1
vote
0answers
46 views

Creative CA0132 no sound

I'm trying to get my sound card of my gigabyte g1 gaming ga-z170x-gaming 7 working. I've installed fedora 23, kernel 4.4.7-300.fc23.x86_64, there is no sound, however hdajacksensetest -a shows my ...
-3
votes
1answer
33 views

ALSA REAL TIME AUDIO PROGRAMMING [closed]

I am trying set external audio interface in Ubuntu as default so that I can use it in real time audio programming using ALSA. Any help please
-1
votes
0answers
20 views

ALSA programming [migrated]

snd_pcm_drain: Assertion `pcm' failed. What might be the problem? This happens when I call : int Capture(){ if(capture_handle) return -1; /* drop any output we might got and stop */ ...
0
votes
0answers
32 views

Unable to playback captured audio using USB sound card

I am trying to capture and play audio using C program. For this I got this tutorial.. Here is the program which I am running:- /** * Jan Newmarch */ #define PERIOD_SIZE 1024 #define BUF_SIZE ...
1
vote
0answers
28 views

No output through stereo jack

I cannot get any sound to output through either of my PC's stereo jacks. I do not even hear the typical static when I plug a device in. This is the case even though Phonon displays "built-in audio." I ...
0
votes
0answers
16 views

How to play a beep/sound file from the u-boot for Panda-board?

I want to play a Beep/Sound file during the boot up from the u-boot on the speakers connected to panda-board. As this functionality is there in PC ,How to replicate the same on the embedded platform ...
0
votes
0answers
15 views

How to access the node created in user space from kernel? [migrated]

I am doing an exercise in which I want to access the node /dev/snd/controlC0 of the sound card from the kernel to set up the tinymix control from the kernel space instead of user space using a tinymix ...
2
votes
1answer
51 views

ALSA - Traktor Audio 2 - How to split front and rear stereo channels / How to debug dmix

I am struggling to persuade ALSA to separate the front and rear outputs of my Native Instruments Traktor Audio 2 external USB soundcard and would really appreciate help. USB Vendor ID: 17cc, USB ...
1
vote
1answer
19 views

How to recover ALSA default configuration after reverting changes in .asoundrc?

I've done some changes via .asoundrc (created "softvol" volume controls). Now, I want to get rid of these changes. Nothing of the following helped so far: Deleted .asoundrc and rebooted system. ...
1
vote
0answers
10 views

Mute audio but make it capturable for screenrecorder in linux

I can capture videos with audio for example with simplescreencapture. Usually this just captures what I see on the screen and what I hear from the speakers. If I mute the speakers, no audio is ...
0
votes
1answer
169 views

Linux mint 17.3 without HDMI sound output

Well, tried everything: alsa, alsa-utils, alsamixer, pulseaudio, puvecontrol and a lot more. Even I changed from ubuntu to Linux mint, but I can't get sound from hdmi (laptop connected to led tv). I ...
1
vote
1answer
49 views

Using aplay and choose which output on card to use

I have an xmos-200 board that is able to record 8 channels and push output through 8 channels. I'm going to focus on the output. For outputs, there are 4 3.5mm jacks with 2 channels each. The board ...
0
votes
0answers
38 views

Setting up a midi controller on Linux Mint

I've recently bought a Worlde Easykey 25 midi controller. I would like to set it up to work with my Linux Mint setup, preferably without messing up my other sound. I am aware of this guide here, but ...
1
vote
0answers
30 views

Gentoo Linux: Enabling a mbeq equalizer for ALSA breaks application audio but works when tested with speaker-test

I am running Gentoo Linux using kernel Linux-4.3.3-hardened-r4 and my sound system is only ALSA, i.e. no OSS or Pulseaudio. I am trying to enable a system-wide equalizer, but since alsaequal never ...
0
votes
0answers
47 views

Bad sound quallty with Conexant CX20751/2

I have a Lenovo G50-80 with a sound card detected as Conexant CX20751/2 The sound under linux (Debian based) is very bad, with something like a metallic sound. I'm using this config at ...
1
vote
1answer
20 views

alsa config for startup

I'm having a problem with my headphone. A friendly person over at the #alsa irc channel came up with this to rectify: sudo hda-verb /dev/snd/hwC0D0 0x15 SET_EAPD_BTLENABLE 2 However it has to be ...
1
vote
1answer
35 views

ALSA RawMIDI issue

I'm trying to write an application using the ALSA RawMIDI interface to exchange sysex data with a hardware synthesizer via USB on a Raspberry PI. the RawMIDI library comes with libasound2-dev. In my ...
2
votes
0answers
20 views

ALSA skipping initially during playback

I have an ALSA configuration that provides the following at the moment: Take default audio and make it mono Pass through alsaequal Expand audio to 4 channels, all mono Split 4 channels between 2 ...
2
votes
0answers
65 views

mplayer: Problem opening sound files, gnome-mplyaer works, why?

I'm new to this community and this is my first question. I am using Debian 8.3 Jessie and have two sound files a.mp3 and b.mp3 on my hard drive. I am using mplayer and gnome-mplayer to open these ...
0
votes
0answers
28 views

Multiple sound errors when running Pyo

I just tried to install the python module with pyo following this method: http://ajaxsoundstudio.com/pyodoc/compiling.html it returned this error: pyo version 0.7.8 (uses single precision) ALSA lib ...
1
vote
1answer
16 views

How do I create virtual ALSA device from which I can record everything that is played?

Should not depend on PulseAudio. Like veth for network, of v4l2loopback for video, it should create virtual audiocard from which I can record everything that is played.
1
vote
0answers
24 views

How to share Alsa devices between users?

I lost the ability to share Alsa sound between users even if only one is logged in. According to this guide ConsoleKit integration should be used instead direct ownership of the device. After I ...
0
votes
1answer
189 views

HDAjackRetask: tee: /sys/class/sound/hwC1D0/reconfig: No such device

I am trying to reconfigure the setup of my microphone with HDAjackRetask however when I click reply I get the message: tee: /sys/class/sound/hwC1D0/reconfig: No such device Here is a screenshot: ...
0
votes
0answers
54 views

espeak, alsa Unknown PCM

I have a Debian Wheezy and I connected to my linux a USB Dac. I use every time a MPD server (and that work) Now, I would like to use espeak with pyttsx But when I start my script (It worked and my ...
1
vote
1answer
60 views

ALSA – Choppy audio with USB audio device after upgrading to Debian Jessie

On Debian Wheezy, mplayer (and other audio players) would play audio without any choppiness. After upgrading to Jessie, while playing audio through my USB sound card (SoundBlaster Live), I get a ...
1
vote
1answer
40 views

How sound generally works in computer and what tools do i have? [closed]

I am searching google for how sound works in linux for couple of days and still couldn't find a fine and basic article or tutorial. What i am actually looking for is what termonologies do exist and ...
1
vote
2answers
16 views

How do I access the sound device with modern libraries?

It used to be that if you wanted to test your sound you could simply cat any file to /dev/snd, but that doesn't appear to work on any of the systems (Debian/Ubuntu/Mint, Arch) that I've tried. From ...
1
vote
1answer
58 views

No analog audio with AMD E1 - HDMI “takes over”

I am having problems related to audio settings on my notebook with all distros, since I used Ubuntu and Xubuntu (14 and 16), Kubuntu 16, Ubuntu Studio (14 and 15), Elementary (0.32) and MINT (17.3 ...
1
vote
0answers
83 views

Lenovo ThinkPad headphones trouble (combo jack)

Well... Sometimes ago I've bought a laptop Lenovo ThinkPad E555 with pre-installed Windows. I've removed Windows and installed Linux Mint 17.3. And now, sound through headphones does not work, only ...
1
vote
0answers
54 views

How to setup audio from for lubuntu minimal install

Running a very stripped down lubuntu 14.04LTS x64 install. I installed xorg and openbox and was up and running! but I can't, for the life of me, seem to get any sound. I installed alsamixer pulsaudio ...
2
votes
1answer
56 views

Why does Linux have a maximum number of sound cards? [closed]

I'm specifically asking about CONFIG_SND_MAX_CARDS in the kernel. From the code using this config, for example in sound/usb/card.c for USB cards, soundcards are stored in plain arrays which are ...
1
vote
0answers
11 views

Set up a pipe to a program as virtual Alsa speaker

I have a program that takes an audio pipe and broadcasts it as FM radio. My question is if I can somehow set it up as an alsa speaker so all audio is redirected to it. The common usage of it is: ...
0
votes
1answer
86 views

Alsa capturing mono microphone as right channel of stereo

The laptop microphone is mono but audio seems to get captured as stereo. The resulting recording has the sounds captured by the mic in the right channel and for some reason whatever sound is currently ...
3
votes
0answers
232 views

Multiple (combine) USB sound cards with Alsa + Jack + Pure Data

I'm a musician and I'm new to PI/Raspbian/Linux. I'm using a Raspberry PI 2 with Pure Data (PD) for a multichannel audio installation. I have one 5.1 USB soundcard (6 channels) but for my installation ...
0
votes
0answers
30 views

Linux on Macbook (9,2 - Mid-2012) - Sound wierd

Today I - again - installed Arch Linux on my Macbook Pro Mid-2012 and I'm - again - very happy. Except, that the sound of the built-in speakers is really strange. On Mac OS X the speakers were pretty ...
0
votes
1answer
112 views

Pulseaudio broken on Arch: pa_stream_writable_size() failed: Connection terminated

The problem While trying to fix a minor issue on my Arch system, I seem to have created a bigger one. I don't really know what I did to cause this (more on that later) but pulseaudio seems to crash ...
0
votes
0answers
105 views

Fedora 23 audio recording

I'm getting this error when I tried to record an audio using a python program. Also the same ALSA error occur when I tried running kwave. I'm using Fedora 23. And my laptop is HP pavilion n15-201ax ...
2
votes
0answers
104 views

alsa sound module snd_aloop

I am having some trouble wrapping my head around the snd_aloop module. I am trying to route all my audio through alsa without using pulseaudio. If I start jackd there's not sound from non alsa apps ...
1
vote
0answers
134 views

No sound through headphones despite pavucontrol (debian stretch)

After updating from jessie to stretch this week I found my heaphone jack no longer outputs sound, though my built in speakers work just fine. The puzzling thing is that everything seems to be in order ...
0
votes
1answer
23 views

Linux Mint 17.2 encounters an error, remounts disk in readonly

I already posted the question actually (Linux Mint 17.2 suddenly loses write access to filesystem), but since it occurs rarely I need to ask again with some new info I gathered. I suspect that this ...
1
vote
0answers
44 views

Audio Problems Using Crouton on Chromebook

I've been using crouton through my Acer 720c Chromebook. In addition, I have an external monitor that I like to use with it, ASUS VS247. This particular monitor has an audio pass-through but NO ...
0
votes
1answer
164 views

How to install the default sound drivers on linux?

I've tried installing some Realtek drivers to make my microphone work. But the installation failed by saying ./install: 102: ./install: alsaconf: not found (Distro: eOS Freya, based on Ubuntu 14.04). ...
5
votes
1answer
189 views

Why do you need PulseAudio?

I'm reading and trying to understand why would anyone want to use Pulse Audio and I'm failing to understand. I read this ...
0
votes
1answer
304 views

Alsa not detecting the good sound card

I tried hard to figure out what's going on with my alsamixer but it seems I'm missing something. I'm using Debian Jessie with xfce, and my sound card has sundainly stoped working (playing). The sound ...
0
votes
0answers
95 views

Soundproblem affects performance

The following error occurs when running programms with sound in wine: ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred This greatly affects performance, as it occurs very frequently. I ...
0
votes
0answers
13 views

last samples are skipping when we do record and playback in loop back mode in linux

I am just connecting my output to the input of codec using mixer controls in linux. I am recording the data with tinycap in bag round and then I started playing of a 30 seconds sine tone using ...
2
votes
1answer
75 views

MPD and Chrome can't both play audio at the same time

I use MPD to stream music, but noticed that I often could not get any sound. I finally figured out that if I quit the Chrome web browser, then playback would continue. This is the relevant section ...
0
votes
1answer
424 views

No sound card detected by alsa, (missing drivers?)

I'm on Kali Linux 2.0, on a laptop in dual boot with Windows 7 and I recently installed some module(chiptune) music players and after a reboot the next day the only sound card that I found in sound ...
1
vote
0answers
96 views

Change output (sink) using the terminal

I've made the change from Gnome to i3, and I want to be able to switch my audio output (from headphones to HDMI and vice versa) using the terminal. $ pactl list cards | grep profile Part ...