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

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2
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1answer
234 views

No sound with the newest kernel version - is this a kernel bug or something else?

I have an external USB sound card on a Fedora 17 system (64 bit). It stopped playing sound after I updated the kernel to 3.5.4-1 (the problem persists under 3.5.4-2). As the sound card still plays ...
4
votes
4answers
5k views

My audio device not working

I have been setting up a new CrunchBang Linux and my sound doesn't work. When I type lspci -v command and alplay -l command in command prompt I can see that my sound card is connected and detected. ...
2
votes
1answer
709 views

Sound not working in Debian except in google chrome and test utilities [closed]

Yesterday, I had Archlinux on my Dell Latitude E6520 and the sound was working perfectly fine (I even had the loud beep I couldn't get rid of). Today, I installed Debian and alsa. The first surprise ...
9
votes
4answers
3k views

Low sound volume on Lenovo laptop under Fedora

I'm having trouble hearing anything at all under Fedora 16 on this Lenovo T520. Everything in alsamixer is at 100% (both pulseaudio and card). I installed Windows 7 on the laptop to check if the same ...
2
votes
4answers
1k views

Pipe system sound to another computer

I have no speakers in my PC (Cent-OS 5.5) but there is a stereo speaker connected to the computer next to my computer (also Cent-OS 5.5). Both computers are networked. Is there any way to pipe my ...
0
votes
1answer
1k views

Gnome-sound-applet not detecting sound card

Everything was working until today, the gnome-sound-applet does not detect any sound card. Alsamixer however is working and I can change volume. I noticed that pulseaudio is not running and that ...
4
votes
1answer
750 views

Finding the current speaker volume (signal strength)

I'm trying to create a widget for awesome wm that controls and monitors volume. Getting and setting the speaker volume is easy in ALSA and PulseAudio, but how about getting the actual signal ...
3
votes
1answer
2k views

Command line audio - piping for simultaneous playback and recording

I am trying to generate sound data, convert it and store it to a WAV format. I'm almost there - except I'd like to hear the generated sound "while" it is being "recorded". This command line just ...
1
vote
1answer
2k views

How to change mixing of channels by pulse audio / alsa

I have a recent problem with my sound configuration. Basically, it's way too loud until I set the volume below 10%. And then it's very quickly too silent. Using the alsa mixer, I can set the headphone ...
5
votes
1answer
686 views

ALSA dummy device - how to configure?

I am working on an audio stream between two virtual servers. For that, I have set up a dummy soundcard (as the vservers don't have a hw card) using modprobe snd-dummy. That seems to work fine - I am ...
1
vote
1answer
1k views

How to have CoreAudio from Mac to Linux/Unix?

After using Alsa and PulseAudio for a while, I feel they are not yet strong enough for Audio capture and audio playback. When I test with loud-speaker and microphone, there is self feedback-loop. ...
1
vote
1answer
1k views

No sound in USB headphones using fedora 16

The volume control buttons on the usb headphone work, they can increment or decrement the system sound. However the headphone have no sound. How to make it work? kernel 3.2, pusleaudio is used by ...
2
votes
1answer
457 views

Getting more details in ALSA volume

I've bought some new speakers, and they play much louder than my old ones. It's so much that I most of the time keep them at 1% to 3% in alsamixer, which is -103dB to -84dB. This obviously leaves ...
7
votes
1answer
6k views

How to check why sound over HDMI doesn't work

I installed Gentoo clean on my system, except my /home but I deleted all hidden folders that might have an impact on sound (.mplayer .pulse* .config .esd_auth and more) and with a fresh user adduser ...
3
votes
2answers
2k views

Recording audio output

I've been following these instructions for recording the output of a program I wrote (that uses rtaudio to synthesize music) ...
0
votes
2answers
670 views

What Linux distro is good for music and well supported?

I'm pretty disappointed with Ubuntu. It's never been easy to sort out the mess that is Alsa / Jack / whatever and have it work with Pd, Supercollider, Ardour, Lillypad. I've upgraded to the latest ...
4
votes
4answers
1k views

Is there any gnome-shell mixer icon relying on alsa and not pulseaudio?

So, long story short, when I installed Mint 12 on my Dell laptop I realized my HDA-intel sound board have problems with pulseaudio. I uninstalled pulseaudio and got my sound back, but removing ...
0
votes
0answers
898 views

How to make front audio jack work again after waking up from suspend?

Sometimes, after I wake up from suspend (using pm-suspend), the front audio jack stops working (no sound) after I wake up my laptop. Only after a full reboot I get it to work again. My laptop is an ...
3
votes
2answers
1k views

How do I know if my microphone is mute or unmute when I have more than one microphone?

How do I find out if my microphone is muted or unmuted, when I have more than one microphone such as Motherboard, USB and HDMI? 1) I can't find it with this: $ cat /proc/asound/cards 0 [PCH ...
1
vote
0answers
657 views

Why is this ALSA configuration file preventing aplay and arecord from listing PCM devices?

In my embedded system I have this configuration file in /etc/asound.conf: pcm_slave.sl2 { pcm "hw:0,0" rate 48000 channels 2 format S16_LE } pcm.rate_convert { ...
5
votes
1answer
1k views

Samson Meteor Mic under Linux/ALSA

Has anybody gotten a Samson Meteor Mic working under Linux/ALSA? I tried to google it but I found no mention of Samson Meteor under Linux at all. Kernel/ALSA/Audacity see the device. Unfortunately I ...
4
votes
3answers
6k views

amixer - How to change recording channel?

So fat, I am setting up microphone settings : $ amixer set 'Rear Mic' 90% mute cap $ amixer set 'Rear Mic Boost' 80% But, after some sys. update, my default recoding chanell changed to 'Front Mic' ...
13
votes
1answer
24k views

How to use command line to change volume?

I am trying to control the volume using my programming script. How can I do the following in Fedora 15, Ubuntu linux? Mute/ Unmute Volume up and volume down Note: Please note that I use a web USB ...
6
votes
4answers
3k views

How can I switch to my USB headset automagically when it's plugged in?

I'm running Funtoo Linux, a Gentoo derivative. My two new Plantronics USB headsets (one wired, one wireless) work nicely. I plug one in, ALSA notices it, and if I manually set an application to use ...
5
votes
1answer
246 views

Xorg key clicks?

I've currently got Fedora 9 on my home PC (yes, I know its quite old - but hell I only reboot it every 6 months - nevermind upgrading!) . My only niggle is that keyboard I've got has quite a different ...
2
votes
1answer
401 views

Renaming alsa controls

Is it possible to rename alsa controls? My front panel is controlled using "Speaker" and my the back plugs are "PCM". Since this isn't very descriptive I would like to rename them to something more ...
4
votes
1answer
736 views

How to get Debian's volume control working with Pulse

I finally configured Pulse to work with every application, however using the volume control on my keyboard still controls the default ALSA selected device. How do I change it so it adjusts the current ...
5
votes
1answer
1k views

Why do I have to run alsactl init each time I boot my system? [closed]

After a new update, there is no sound by default in my Debian Squeeze box until running alsactl init, but whenever rebooting the computer I have to run the command again to gain sound. How can I ...
7
votes
1answer
1k views

Changing default audio device in Pulseaudio

I would like to use HDMI on my graphic card for audio output. ALSA shows it as a card with 4 devices and I can get sound through one of them (the other three are different channels, perhaps? I have ...
20
votes
4answers
13k views

Generating random noise for fun in /dev/snd/

Recently I have been exploring the enchanted /dev folder. I want to write some random data to an audio device in order to generate some noise. I am using ALSA. So I instruct cat to pipe some random ...
1
vote
0answers
394 views

alsa and 5.1 surround through three front stereo jacks on the Dell Studio XPS 13

I know this is not a tech support forum, but I am not etting an answer from alsa people and have tried much, if not everything. I can upload the alsa-info output if needed, but here is the info ...
4
votes
1answer
401 views

How can I set a top limit for the PCM value when changing the loudness with pulseaudio?

when I change the loudness with pulseaudio, pulseaudio acts on several of the values I can see when I use alsamixer -c0 I have a problem: when the PCM loudness exceeds a certain value (80%), the ...
2
votes
2answers
4k views

“lsmod |grep audio” doesn't return anything?

I am running Debian Squeeze. I installed and removed Gnome3 and reinstalled Gnome2.x (epic fail and stupidity) and in the process I have lost audio, lspci returns following # lspci | grep Audio ...
7
votes
2answers
640 views

No sound when attached to docking station

I have been using Linux and Ubuntu only since the last two months on my (2006) Sony Vaio VGN A617S laptop which is going pretty well on Ubuntu 10.10. When installing Ubuntu audio did get installed ...
3
votes
1answer
1k views

5.1 speakers on soundblaster x-fi 'extreme audio'

The rear and center channels on my 5.1 speakers don't work. I've checked the connections a few time, and turned up volume sliders in alsamixer “System information” in alsamixer correctly identifies ...
6
votes
1answer
3k views

Can someone diagnose this JACK error message?

OK. I start JACK without starting the JACK server. I get: 23:09:22.730 Patchbay deactivated. 23:09:22.765 Statistics reset. Cannot connect to server socket err = No such file or directory Cannot ...
6
votes
2answers
864 views

Microphone always picks up sound and routes it to speakers

I've started running into a kind of strange problem on my laptop, and Google hasn't proved to be very helpful so far. Essentially, at seemingly random times, my microphone will start sending output ...
3
votes
1answer
1k views

Trying to improve sound quality with ALSA

I'm trying to make ALSA 1.0.23 to use different resampling algorithm. I did some research on the Internet and found that putting the line defaults.pcm.rate_converter "<library>" into either ...
1
vote
1answer
225 views

Easy way to use hardware mixing?

My sound card supports hardware mixing. What's the easiest way to use this feature (rather than on an app-by-app basis, hopefully)?
2
votes
1answer
386 views

Sometimes no sound in flash videos after boot?

Sometimes after I boot up the machine, I get no sound in flash videos. First I didn't know why it was happening, but as I read a few articles here and there, I found out it was because of my USB ...