Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system.

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939 views

ALSA: Audio playback is clipped and has low volume

I'm hoping that someone can help me debug my audio problems. The problem is that audio playback is clipped and has low volume. The details of my setup are as follows: Arch Linux 3.1.3-1 An onboard ...
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1answer
19 views

Alsa hardware volume with PulseAudio

Before installing pulseaudio, I was able to control volume for the front (meaning on the front panel, the "headphone" jack) and rear (meaning on the back panel, the "line out" jack) separately. When ...
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1answer
35 views

Sound does not work on X-server, works in TTY, Arch Linux w/ALSA

My sound system isn't working when I use the X server. When I use it in a TTY, it works fine. In a TTY, the output of aplay -l: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA ...
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1answer
397 views

ALSA “dmix plugin supports only playback stream” error when using dmix on beagleboard

On a Beagleboard, I need it to play sound from several processes. The default /etc/asound.conf is empty, so I put this dmix example in. Now sund mixes fine, but when I'm trying to run a process that ...
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1answer
208 views

linux mint VIA sound issue

So I installed linux Mint 15 "Olivia" 64 bit on my Mecer W550EU laptop I have HD Audio with a VIA chipset charles-W55xEU charles # lsmod | grep snd snd_hda_codec_hdmi 36913 1 snd_hda_codec_via ...
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1answer
186 views

Using loopbacks and null-sink cause extreme distortion after 20-30s during ffmpeg recording

I'm trying to record both video, speaker sounds and microphone sounds at the same time. To deal with the audio, I set up two loopbacks (one for microphone, one for speakers): pactl load-module ...
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1answer
929 views

No sound on Debian 7 stable

I have Debian 7.1. Today I have lost an ability to listening to music. I can hear sound played by speaker-test, mplayer and some applications sound (eg. Skype sound notifications). But I have problems ...
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1answer
81 views

How to create fake sound card on Ubuntu Server 12.04

I want to run 'blender --background --python script.py' on my Ubuntu Server which does not physically have any sound equipment. It turns out that blender requires sound card. I see following error ...
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1answer
32 views

Automatically switch on speakers when there are Alsa clients

I want to connect a relay to one of the GPIOs of my Raspberry Pi. This relay supplies power to the speakers. I would like my speakers to be on only when there is sound activity. I am looking for ...
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383 views

No sound output or hardware to choose from in gnome sound settings

There is no sound output when I try to play music or videos etc. When I run $ speaker-test I get speaker-test 1.0.25 Playback device is default Stream parameters are 48000Hz, S16_LE, 1 ...
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0answers
308 views

Linux noob trying to get headset to work

I am trying to get my headset (Logitech H390) to work on a new linux installation (centos 6.4). Unfortunately I am unable to hear anything from the headset. I have tried several options from the sound ...
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0answers
277 views

How do I use wine's new multi-channel audio support?

Wine supposedly added Multi-channel support to the ALSA driver in a recent release. However, I haven't found any documentation about it or any reports of anyone successfully using it. I have 5.1 ...
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0answers
802 views

AC3 & DTS Output Produces Buzzing/Noise Using a52 ALSA Plugin in Pulseaudio

Note: I hope this is the right site to ask it on, as I'm using ubuntu 12.04 64bit but assumably this is a general linux/alsa configuration question. I've followed the guide at ...
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0answers
826 views

Scratchy sound with ALSA and USB Sound card

Since frying my onboard soundcard, I'm trying to get a new USB sound card to work with ALSA. Everything looks fine too: [oliland@olidesktop ~]$ lsmod | grep '^snd' snd_seq_dummy 1455 0 ...
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835 views

using Ubuntu 10.10 I want my speakers and head phones as separate devices

I would like it if I could set my rear speaker jack, not surround sound rear, to be used as the system default only. I want the head phones, that plug into the front of my PC, to be silent, unless I ...
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0answers
27 views

No sound in headphone jack

Worked fine a week ago. Yesterday when I plugged headphones into my Asus laptop, I got sound both from headphones and speakers. Today after system crash (not sure what was the reason) when I plug ...
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17 views

Default bluetooth device not allow to record from another device

I have already set the bluetooth device as default device for recording the audio. But I have add the another usb audio device for recording, the bluetooth device not allow the usb device to record ...
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0answers
34 views

Java Exclusive MIDI usage workaround?

I'm using a java applet, Jalmus to be specific, that implements MIDI usage. Whenever Jalmus is running, MIDI Input works (Midi Out doesn't but I don't need that) however, when attempting to connect ...
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93 views

What's the proper way to forward audio from i386 executables that use ALSA to an x64 pulse server?

I'm running Kubuntu Raring x64, and I had a program that I was unable to compile under my 64-bit environment but there was an already compiled version (32-bit) available for download (specifically ...
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0answers
102 views

Record line-in audio from two applications using Alsa

Im currently working on an small application which runs on a cubieboard (ARMv7, rasp-pi-like). What I really need to do is, accessing and recording the line-in audio-signal from two different ...
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54 views

ALSA - Codec Registration

My Codec is registered after SOC init is done. In SOC init, ALSA cannot find codec registered and hence defer the sound card registration. Later when I register codec, its entry is not registered in ...
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470 views

ALSA buffer xrun when recording with ffmpeg

Is there any way to increase the ALSA buffer size? When running this command: ffmpeg -f alsa -ac 2 -i hw:1 -ar 44100 -b 64k output.mp3 I get a "ALSA buffer xrun" before my system locks up Input ...
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258 views

alsaloop: What happens on a buffer underrun?

I am tuning my sound interface latency with alsaloop -C hw:1,0 -P hw:1,0 -t $LATENCY_US When I set $LATENCY_US to 30000, I get around 20% CPU usage. I can restart this a few times and make some ...
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22 views

ALSA sound cannot get below 18%

My in-ear earphones are very loud, and I want to get them to be quieter. alsamixer works until it gets to 18% or "-45 dB". Then when I want it get even quieter, it jumps all the way to zero. 5 or 6 ...
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0answers
219 views

Wine screws up Pulseaudio and USB audio card when already playing ALSA stream

My setup is a Thinkpad T420 with Creative X-Fi USB audio card. Everything usually works fine, I can play multiple streams and arbitrarily move streams from one audio card to another. One use case ...
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193 views

Strange sound behavior

First of all, sorry for the tittle. English isn't my native language, and I can't find a word to describe the strange behavior I'm getting here. In the most simple explanation, is like sound keeps ...
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406 views

no sound with an USB Microphone and pulseaudio

I connected my USB Microphone to my Computer, but i cant get it to work. Pulseaudio recognizes the device, and i can see and edit it with pavucontrol in the Input Devices section. I also can select ...
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148 views

Amplify alsa capture beyond 100%?

I'm using ALSA. The volume of my mic is so low that even 100% of capture volume is not enough in a skype conversation. Is there any way to amplify the capture volume beyond 100%? I cannot use ...
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1k views

Volume / gain too high with ALSA under Debian for an USB sound card

I encounter some issues configuring audio with ALSA on my Seagate Dockstar on which I plugged a little USB audio card. I'm able to play music with MOC but I'm stuck with a volume way to high. ...
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0answers
102 views

Headphones don't “isolate” speakers

I have bought some new 2.1 speakers but I have an issue. When I plug in the headphones the sound continues to play from the speakers (in a lower volume though). I re-ran alsaconf but I couldn't solve ...
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505 views

Alsa devices under Wine

I'm running OpenSuse 11.2 and Wine 1.1.28. Even if audio is perfectly working fine for me (Skype, Banshee, etc), when I try to configure audio for Wine (to use Spotify) I cannot hear anything from ...
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26 views

Pulseaudio shared library error in Ubuntu

In Ubuntu 12.04 I get the following, whenever I try to use pulseaudio (e.g. when typing pulseaudio --version) /usr/bin/pulseaudio: error while loading shared libraries: libpulsecommon-1.1.so: cannot ...
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8 views

ALSA upmixing/processing conditionally from different numbers of input channels

After a lot of research and experimentation, I was able to get ALSA to upmix stereo to 5.1 surround sound the way I want it. However, my problem is now that I can't properly play mono sources (the ...
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13 views

ALSA from output to input

I need to translate sound from my VLC player right into my microphone input. Maybe I should create some virtual device and.. I don't know what to do.. and my english is not good so it's a real problem ...
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468 views

Switch default HDMI device in Ubuntu

When I connect my pc to a TV using HDMI cable I don't get audio over HDMI. PulseAudio Volume Control detects the HDMI audi output as unolugged. aplay -l lists the following: **** List of PLAYBACK ...
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363 views

After updating archlinux, the maximum volume is far too low

I booted my Archlinux PC today and opened Mumble, and found that I couldn't hear anyone, so I opened some music and I couldn't hear that. After turning my volume to the maximum possible level in ...
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26 views

ALSA access to multichannel audio card instead of jackd

I have a HDSP9652 multichannel audio card connected to two ferrofish A16 ADAT-to-analog audio breakout boxes, all this is running headless under Ubuntu 13.10, Linux kernel 3.11. Using jackd 0.122, I ...
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76 views

Using 5.1 surround to play back 3 independent stereo streams

I built a small home server recently. It runs Ubuntu Server 12.04 and has a sound card (Via VT1708) with 3 audio jacks - which I want to use as 3 independent stereo outputs to play back (potentially ...
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22 views

Temporarily disable ALSA soundcard (mic)

I have a Linux application where I'd like to temporarily disable audio input from a specific device. Is this possible to do somehow? The system is running Alsa & pulseaudio. Ideally it I'd like ...
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182 views

Gigabyte Brix TOSLINK/SPDIF with Archlinux

I tried setting up the combo analog/digital out on this little box with the help of this adapter, but I can't get it to output anything digital... aplay -l tells me that card 1 device 1 is "ALC269VC ...
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0answers
189 views

How can I use a virtual sound card without the hardware?

I'm trying to generate and stream audio+video via aconv to a remote location such as Youtube from a headless linux server, which will then be multicasted out to the internet at large. I have ...
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0answers
31 views

How can I set setup an audiodelay for the complete audio output in linux?

Can someone tell me how I can setup a delay (0.1s - 0.5s) on the complete audio output on my raspberry pi? I am running the Raspyfi Distro and it's using the alsa sound driver. Thank you very much!
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24 views

on pin configuration in ALSA

I seek explanation for a strange behavior: as my codec dump can testify, I have speakers on pin 0x14 and HP on 0x15 (and, possibly, ext MIC at 0x18 and int MIC at 0x19), then why does the command ...
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0answers
193 views

Record Audio From USB device using FFmpeg

I am trying to record an MP3 file from an audio device connected to the USB port using ffmpeg. I am on a Windows 7 machine, and I am trying to do this from a command line: ffmpeg -f alsa -i hw:0 -ac ...
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163 views

Virtual ALSA Device for redirecting Output to physical input

I am trying this for over 10 days now, several hours a day. i have a ubuntu 12.04 server box, no x-server. on this machine runs a ruby application, and a C application, both bought from an external ...
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0answers
63 views

Create a virtual input for ALSA applications using PulseAdio

I need to run an application using Wine. But Wine uses ALSA by default, it still doesn't support PulseAudio. Now: I need to create a virtual sound source for this application, but I have no idea how ...
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0answers
119 views

MPD fails to start the next song

I am running Arch Linux (e17) on x86_64; with mpd 0.17.3 and ALSA 10.0.26. One update ~three months ago mpd started acting strange. It would not start playing the next song, and it would appear as if ...
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0answers
930 views

Getting Logitech USB headset to work on Debian

I am attempting to get a Logitech USB headset to work on my Debian Squeeze computer. However, no matter what I do, there is no sound. I've already tried everything I could find on Google with no luck. ...
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0answers
715 views

Microphone not working in Ubuntu Natty

Problem: I can hear myself speak in the mic but Ubuntu is not recording/capturing the sound. Actions Taken: I followed all the steps listed here for the Alsa update script I've also tried changing ...
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5 views

How can I make programs use seperate audio outputs in ALSA?

I am trying to configure ALSA to have one program use the main audio out while the rest of the os ports out of the surround.