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

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9 views

snd_rawmidi_open() waits forever - no error message

I am trying to use ALSA for MIDI purposes in C. My problem is, snd_rawmidi_open() sort of "crashes" (waits forever like a while loop) when using valuable arguments : #include <stdio.h> ...
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1answer
11 views

Jack not recognizing MIDI device

Jack does not recognize my MIDI keyboard, whereas ALSA does. Here are the logs : pi@raspberrypi / $ jack_lsp system:playback_1 system:playback_2 LinuxSampler:midi_in_0 LinuxSampler:0 ...
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1answer
20 views

ALSA sampling rate

Couple of questions: If you set the capture sampling rate in ALSA API to say 1000Hz, is the input really sampled at 1000Hz, or does the sound card always sample at its maximum capable sampling rate, ...
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19 views

.asoundrc, alsaequal as default breaks firefox MP3 playback

Alright, so the important thing to note here is that it (appears) to ONLY break MP3 playback, other formats work. Youtube html5 videos and .ogg playback work fine and use the equalizer as expected, ...
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12 views

HDA Realtek and Auto-Sensing Disable

I have a couple different devices using Realtek audio chipsets (one is ALC269VC, another is ALC262). On both devices (laptop/tablet type devices, with internal speakers and a headphone jack) when I ...
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40 views

Crunchbang Linux Waldorf: Sound Problems with NVIDIA Corporation MCP61 High Definition Audio (rev a2)

$ lspci | grep -i audio 00:05.0 Audio device: NVIDIA Corporation MCP61 High Definition Audio (rev a2) 02:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Device aab0 $ sudo speaker-test ...
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0answers
21 views

PulseAudio: Sound works after first pacat call

I've got a strange problem with PulseAudio and a gstreamer python script (pygst). The script below works only if I execute a cat /dev/urandom | pacat before. I've absolutely no idea what can ...
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0answers
28 views

Modify sound volume per application [on hold]

In Fedora 12 + Gnome 2 I used to be able to modify the volume of each application seperately. Now, I'm on Fedora 20 + MATE 1.6.2, and this option is gone. If I click Notification Area > Sound > ...
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0answers
59 views

Sound crackles and echos to the point of being unusable

I recently got a new desktop, installed debian 64 bit, and found out that the sound doesn't work at all. I'm not entirely sure what information I should give to help identify the problem but I'll do ...
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3answers
42 views

Alsa driver update in client machine without make

I have a Debian 6 system and updated alsa from 1.0.23 to 1.0.25, It works as expected. Steps which I performed to compile: ./configure make make install Now , I have 100's of client machines in ...
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0answers
100 views

Configuring USB digital microphone under Linux

I just bought a digital USB microphone. It looks nice, but I cannot make it work. I use openSuse 12.3. How do I ever know whether my system has the drivers for such and such microphone? The good ...
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2answers
110 views

Volume too quiet at maximum

I recently replaced my broken Sennheiser PC350 to a Beyerdynamic DT770 Pro 80 Ohm headphones and I've encountered a really annoying issue. Everything is too low. I can listen to it, but it's almost as ...
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0answers
50 views

Focusrite Scarlett on Linux input mapping?

Does anyone use these interfaces on Linux? If so, how do the inputs map (e. g. with ALSA/PulseAudio)? E. g. the Scarlett 6i6 has the following connections. Inputs: 2x symmetric XLR inputs (one for ...
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1answer
43 views

Set Sound Settings to 152% on Boot (LMDE)

I have installed Linux Mint Debian Edition and everything is working correctly, except that 100% sound setting is not ideal on my speakers, so I see that I can increase it to 152% from my sound ...
0
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1answer
145 views

firefox + html5 + .asoundrc = No sound

Here's the problem: Manjaro Xfce/3.15.4, Alsa (No Pulse), Firefox 30 and 31, Gmusicbrowser, mplayer/smplayer Firefox with youtube html5 player - no problems Firefox with youtube html5 player and a ...
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1answer
87 views

Focusrite Scarlett 8i6 With linux mint

I have a focusrite scarlett 8i6 soundcard and I would like to make many sounds with it. Currently it's deadly silent and I want to crack on with some programming whilst listening to music! I usually ...
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31 views

Calling speaker-test from usermode-helper API

I needed to call come audio-producing applications from kernel in a toy module. In order to test that, I thought of calling speaker-test from a simpler module, but no sound would ever come from it. I ...
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50 views

Understanding Mixing of sounds in ALSA

I can't seem to bend ALSA completely to my will, even after I spent a lot of time configuring it. I just do not seem to understand it well enough. Here is my /etc/asound.conf: pcm.dmixed { ...
2
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1answer
77 views

FFmpeg doesn't recognize my audio sources

I want to record my screen with audio for practice. I saw recommendations to use this command line: ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 25 -s 800x600 -i :0.0+200,100 -c:a pcm_s16le -c:v ...
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0answers
80 views

Android w/ Glibc stack, how can I set-up audio w/ nvlc? Is it possible with ALSA(Debian)?

With the help of the book "Embedded Android" by Karim Yaghmour I managed to learn enough about Android's build process last fall. With enough fiddling around and Google'ing I learned a sufficient ...
2
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0answers
162 views

what device name should I have to give in snd_pcm_open other than “default”

I want to record sound from 2 devices simultaneously: internal mic external usb webcam mic Using pulseaudio sound controller, I set either of these devices as default and could record sound with ...
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45 views

Selected ALSA device falls back to default in Wine with PulseAudio installed

Under SolydK (based on Debian Testing), as PulseAudio is installed by default, I unless I switch from the default sound device to an item that appears in winecfg at the sound settings, I get distorted ...
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1answer
160 views

Why would alsa sound pop, crackle and be generally too distorted to listen to?

I've been having a weird issue with Alsa recently. For some reason all sounds are really distorted and no matter what application I use, I won't get anything clear out of it. I've tried Tomahawk, ...
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1answer
162 views

Ubuntu sound not working after sleep/suspend

Whenever I sleep my laptop I mean if I down the flap sound doesn't work, every time i have to restart my laptop for sound to make working. Fo instance right now sound is not working(since I closed ...
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1answer
38 views

soundblast live on linx mint: fatal: module snd-emu10k1 not found

I'm trying to get my soundblast live 5.1 emu10k1 (rev 7) working. It is listed in my xconf settings but the onboard sound processor is the standard (i have tried to make de soundblaster standard, but ...
2
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1answer
173 views

Changing sound chip with ALSA

I have a laptop with Intel audio card that lspci reports as 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04) It is responsible ...
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170 views

Internal microphone not working.. again (Fedora 20, KDE, HP 8460p)

Unfortunately I have yet another "adventure" with my internal microphone. Everything is un-muted in alsamixer, as well as in pavucontrol. It is not the first time it stopped working, but now - for ...
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1answer
662 views

Elementary os no sound after alsa update

I am new to Linux but really love Elementary for its simplicity. After noticing that my sound was quite poor in Elementary, compared to Windows 8.1, I have tried updating the sound drivers. I ended up ...
2
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1answer
318 views

Record audio from multiple devices with ALSA and Pulseaudio

I want to record audio from multiple input devices using ALSA and Pulseaudio. More precisely, I want to play UltraStar Deluxe. It is a game using SDL. As far as I can tell, it supports ALSA only. ...
5
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4answers
546 views

recording audio from web-based audio player using ALSA loop device

I am trying to save voicemail messages from Verizon Fios phone in best quality possible. The voicemail messages are available online, but for playing only (Java based player), no saving. Officially, ...
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183 views

jackd error ALSA: could not start playback (Cannot allocate memory)

I'm using a headless Raspberry pi setup using ssh from my mac. I recently purchased a Wolfson pi sound card and am trying to start JACK from the command line. When I type jackd -d alsa, I receive the ...
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235 views

Audio (speaker) jack detection with debian

How to find out whether speaker jack is connected or not in my motherboard Tried out some reference from : Detecting headphone connection/disconnection in Linux pasted my amixer output.Need ...
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0answers
41 views

Xfce sound level applet works wrong

I have installed Xfce4 on Debian testing. I'm using ALSA for sound driver. If I decrease volume level by using sound control applet in Xfce panel, there is no problem till "zero level". If I decrease ...
3
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1answer
201 views

How to simultaneously play sounds on 4.0 surround system using aplay

After my first configuration war against alsa (won with the help of CL.) check this question ... I would now want to go further : I am able to play multi-channel sounds on my setup, but I now need ...
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17 views

ALSA: how to turn off “link note to velocity” feature

I use a USB MIDI keyboard to play with fluidsynth and ALSA on debian. It works fine but I wonder if there is the possibility to turn off the "link note to velocity" feature (= the volume of the played ...
2
votes
1answer
143 views

Alsa not detecting USB microphone on system boot

I have a USB microphone that works fine, up until I reboot my system. After that, it doesn't work at all until I unplug it and replug it. Based on my (limited) understanding of the components ...
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212 views

PulseAudio plays Audio over Bluetooth too fast - sounds like a chipmunk on helium

I am using PulseAudio's program 'paplay' to play an 8 KHz 16 bit LE single channel wave file through bluetooth to my headset using the A2DP profile. This is on a Linux ARM board using the new BlueZ 5 ...
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1answer
88 views

Generate .asoundrc

Is there any way to generate .asoundrc? I know that by default this file does not exist and system generates one on the go like Xorg does. But is there any way to see how the content will look like?
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234 views

Extremely loud crack and mangled sound over S/PDIF using ALSA

Sometimes it seems ALSA on my machine goes completely haywire: Flash audio on Spotify doesn't produce any sound. SMplayer plays audio just fine, or doesn't play at all (I've observed the latter ...
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1answer
136 views

Audio cuts in and out after upgrading from Ubuntu 12.10 -> 13.10

So my audio was working perfectly fine (XBMC, VLC, Flash in Chrome, etc) before the upgrade. Now that I've upgraded, I can still play audio, but it plays for a second or two at a time before cutting ...
3
votes
1answer
405 views

What is ALSA in the Linux kernel?

What is ALSA? I read the Wikipedia page but couldn't understand it. All I understand is that it is a module in the kernel that has something to do with sound. What happens if you don't include it in ...
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360 views

Pulseaudio and Pavucontrol very unstable

I've recently installed ArchLinux on my desktop, together witht the GNOME3 Desktop. I installed pulseaudio and pavucontrol, which both seem to be very unstable. First I couldn't get my headset to ...
2
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2answers
80 views

Where do sound drivers live? [closed]

A little while ago I searched for a good driver for my sound card (with surround sound support) and didn't find any. So it seems there is none. I thought I could try (even though I think nothing ...
0
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1answer
57 views

Opening ALSA Microphone in two programs?

I'm using a raspberry pi to capture some audio, but I only want it to do it when the noise level goes above a certain level, and then the device will record until two seconds after it falls below that ...
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3answers
838 views

Alsa Pulse Audio cannot open audio device pulse (No such file or directory) pulse: Input/output error

I'm trying to stream my Gnome Desktop I installed on my OpenVZ VPS Server, and I'm not trying to run this from SSH, but the terminal inside the GNOME desktop, I know it probably doesn't have a sound ...
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111 views

ALSAEQUAL runs, but sliders do not seem to affect audio

I want to have an equalizer that lets me easily adjust sound for listening to music on my laptop with headphones. I'm trying to install ALSAEQUAL since it seems that this is the preferred tool for ...
2
votes
1answer
57 views

Setting maximum volume

I usually work in a WM (i.e., i3wm) and use alsamixer to adjust sound volume. The recent Linux installation on a Dell t5500 machine gives a very loud sound when set the maximum volume in alsamixer. ...
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261 views

Auto-detect headphone jack

I am using ALSA on Arch Linux on a MacBook Air 5,2 (mid 2012). This is my first time using alsa by itself (without any tools that come with gnome), so I may have not configured something in order to ...
7
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3answers
2k views

Microphone - static background noise suppression on Linux

My soundcard is Realtek ALC 892. On Windows 7 I use official Realtek drivers, on Linux I use PulseAudio (on Ubuntu 13.10). On both Windows and Linux, when I enable microphone boost +30db (required ...
0
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1answer
68 views

Digital audio between Intel Atom E640 and ADAU1445

Background information: I have a ADAU1445 DSP from Analog Devices connected to multiple audio sources through the Serial Input pairs. One of these sources is an Intel Atom E640 processor running ...