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

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alsa headphones one channel only

after an upgrade in debian sid channel my default speakers which was set to 3 channel sound did changed to stereo 2 channel output i've managed to setup it back by setting pulse settings lfe mixing ...
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30 views

Firefox Not Playing HTML5 Audio, Using ALSA with Modification

Some time ago, I faced a problem with my Eee PC 901's left speaker and had to disconnect same. Quite naturally, I wanted to find a way to downmix the stereo audio to mono and pipe it all out the ...
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23 views

mpd setup for ALSA

I'm trying to setup mpd on my Sabayon system. Clementine uses Audio sink (ALSA) output, and it works fine. I did stop playback in Clementine while testing in GMPC, the song looks like it's playing in ...
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62 views

intel edison voice control - how to configure alsa

I want to implement a voice controlled wheelchair using Intel Edison. Basically I will say forward, left, right and stop to a microphone connected to the Edison board via the sound adaptor. For the ...
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85 views

Set volume using php exec and amixer

I wrote a little php script to control the volume of my local machine with alsa: <?php # for simplicity and testing it really just executes the command: echo exec('amixer set Master 5%+') . " \n"; ...
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42 views

How do I set the default soundcard for the root user?

I am running raspbian Jessie on my raspi 2. I have an external usb soundcard for my pi. I set it as the default card simply by going to Menu->preferences->Audio Device Settings. This works as expected....
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61 views

Native Instruments Maschine Mikro and Linux

After searching a solution wherever I could, I'm resigned to ask it myself. I'm the owner of a Maschine Mikro MKII from Native Instruments and, some months ago, I switched to Ubuntu Gnome (under 15.10 ...
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1answer
97 views

usb sound card not loading arch linux

I have the following /etc/modprobe.d/alsa-base.conf: alias char-major-116 snd alias snd-card-2 snd-usb-audio alias snd-card-1 snd-hda-intel alias snd-card-0 snd hda-intel options snd cards_limit=3 ...
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What happened to “Ignore keyboard volume buttons.” preference in VLC?

On my Debian system, VLC 2.2.1 is responding to my laptop's volume keys, and also forwarding them to the system, so when VLC is open the keys adjust both volumes simultaneously. Basically, I'm seeing ...
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75 views

Noise in headphones when connected to laptop

I have a Dell m4800 laptop, with arch linux installed. Everytime I connect my headphones to the computer I hear a regular noise but just when no other sound is being played from computer. I am sure ...
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21 views

Proper audio on Lenovo Y50-70 under Linux?

The Lenovo Y50-70 laptop is an amazing piece of hardware, and after some updates to Linux, almost every component of it works beautifly. But sound. It's quality is terrible compared to Windows', as ...
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3answers
179 views

Headphone jack stops working after suspend / reboot

I had this really annoying problem, where the headphone jack would work fine after a cold start. But after suspending or cold rebooting (restart the computer without completely shutting it down) the ...
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48 views

How do I map the keys on a USB audio device to volume controls?

I don't have PulseAudio. I've been learning/tinkering with Alsa to setup USB device and effectively replace Pulseaudio with the configs. When the USB device is connected and I want to play through it, ...
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1answer
51 views

ALSA does not detect all USB cards properly

I want to run four identical USB audio devices, but ALSA shows only two of them on one machine (all four operate properly when plugged in alone). It seems they are detected (and initialised) properly:...
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1answer
48 views

ALSA: How to configure an (virtual) audio device for each channel?

I would like to play different sound/music of the left and right speaker/headphone. I understand that left and right speaker are called channel 1 and 2 in ALSA. The DJ software I'm using (mixxx) does ...
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322 views

ffmpeg ALSA audio capture not working

I use the static binaries of ffmpeg (http://johnvansickle.com/ffmpeg/) on linux mint 17.2. When I try to capture audio with the command: ffmpeg -f alsa -ac 2 -i hw:0 output.wav I end up with the ...
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167 views

Chromium Speech-Recognition: Unable to set hw params for CAPTURE (Microphone)

I'm trying to get the Chromium Speech-Recognition working. I'm starting Chromium with the following command: chromium-browser --kiosk --incognito https://my.url --alsa-input-device=plughw:1 But the ...
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55 views

Debian Unstable x64: ALSA equalizer plugin unavailable to i386 applications, no sound

I'm running Debian Unstable x64, but sometime use legacy applications or games that are only available in i386. With plain ALSA (there's only so much PulseAudio a sane person can take), i386 ...
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23 views

Why Won't `amixer` Set My Volume Below 17%?

When I run amixer, I see the following output for the "Master" channel: $ amixer Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: ...
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126 views

linux - headphones and speaker works only AFTER resume from sleep

Good day all For quite some time I have had this issue, not distro specific, I assume it is a kernel related issue. aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], ...
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1answer
124 views

How to select which sound output device to use for /dev/dsp OSS emulation?

I have a system with two sound devices and am using sound via HDMI out. This is Card 1, Device 7, Subdevice 0, so I set in my /usr/share/alsa.conf: defaults.ctl.card 1 defaults.pcm.card 1 defaults....
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453 views

VLC Not able to detect/choose default audio device output

I'm on a clean Funtoo install and after setting up ALSA i've just tried to play some movies through VLC but it doesn't seem to be able to detect/choose the default output audio device. If i go to ...
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78 views

Google Chrome use alsa instead of pulseaudio

I would like to make Google Chrome use alsa instead of PulseAudio so there is not a delay when watching netflix. However, I don't want to uninstall PulseAudio because I need to be able to use Skype. ...
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146 views

Ubuntu 15.04/15.10 does not play any audio after 'amixer set Master toggle' two times

I used the 'amixer set master toggle' command to mute my music on the home server during a phone call. Afterwards I tried to use the same command to un-mute the mixers: Dind't work. I tried to ...
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18k views

alsa-base.conf missing in new Raspberry Pi Raspbian Jesse

I'm trying to make my Pi use an external USB sound card as a default. All tutorials are telling me to edit /etc/modprobe.d/alsa-base.conf However the version of Raspbian I have (pretty new build, I ...
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216 views

Capture audio (alsa) and video (v4l2) from usb capture card

I want to save my old videos using a USB capture card. I'm using V4L2 Test bench and I've got working video and audio. I've managed to capture both audio and video, but not a the same time (saving to ...
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23 views

Configure MultiChannels on ALSA Linux Platform

I want to use ALSA library for playback and capture audio. I have an 8-channel interleaved wave file. When playing it through the program definitely recognizes that it has 8 channels. However, I only ...
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111 views

How do I increase the number of MIDI through ports in ALSA?

ALSA always creates 1 MIDI through port. Since I work with Windows music applications via Wine, and because MIDI through ports are everything-proof, how can I increase the amount of MIDI through ports ...
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138 views

Understanding asoundrc and hdmi output

I am running nixos on a lenovo x220t. When it starts it finds the analog speakers and shows only them in alsamixer (or pavucontrol). However, when connected to an hdmi monitor/tv I can play sound ...
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1answer
218 views

How do I make ALSA upmix 2.0 to 2.1?

For ages, I have been tinkering with ALSA and for an equally long time, I have been frustrated by the rather opaque configuration system it uses. It is really powerful, no doubt, but getting what I ...
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1answer
319 views

ALSA output to two dmix devices simultaneously using a multi device

I am trying to play audio to two hardware devices simultaneously, megalodon and analog, using two dmix devices. megalodon is a USB headset, analog is just the 3.5mm port on my computer. When I route ...
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135 views

alsa gives error when run via su

I have a script that starts my application ./run_se and it works just fine. But I want to start it at system boot, so in after.boot, I have su artisan -c "/home/artisan/run_se" but this errors ...
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1answer
59 views

I have to pull the connector out partly to get stereo sound

Using headphones, I have to pull the headphone jack partly out of the socket to get stereo sound. If I push it in all the way, only the right channel comes through. I'm assuming that this has to do ...
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221 views

How to tell system wich USB-soundcard I want to have hw:2, if the two are “snd_usb_audio”?

I have a USB-soundcard (Encore ENMAB-8CM) and a Webcam with mic (Logitec c170). I want to use Jack with the USB-soundcard and, using alsa_in and jack_connect via scripts, to connect Webcam mic to Jack....
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173 views

Pulseaudio dont opens PCM device

I have IMX6Q based board and want game with pulseaudio. My board have 3 sound devices. # aplay -l **** List of PLAYBACK Hardware Devices **** card 0: tlv320aic3xaudi [tlv320aic3x-audio], device 0: ...
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2answers
558 views

AMD R9 270x HDMI audio not working correctly with ALSA. Works with PulseAudio. Is it possible to fix?

Some days ago I installed Fedora 22 on my media center pc. Previously I had Windows 8 installed because I wanted to play some games and watch some blurays, and everything worked as wanted. The HDMI ...
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1answer
2k views

ALSA PulseAudio sound output when switching between headphones and laptop speaker

Since I installed PulseAudio on my Gentoo system I've been having no audio output from my laptop's speakers when un-plugging the headphones jack. I suppose the problem lies in how ALSA and PulseAudio ...
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721 views

Linux ALSA Driver using channel count 3

Am running my ALSA Driver on Ubuntu 14.04, 64bit, 3.16.0-30-generic Kernel. Hardware is proprietary hardware, hence cant give much details. Following is the existing driver implementation: Driver ...
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1answer
3k views

No sound on Arch Linux (ALSA)

Output of aplay -l aplay: device_list:268: no soundcards found... output of sudo aplay -l **** *List of PLAYBACK Hardware Devices* **** card 0: Intel [HDA Intel], device 0: ALC662 rev1 Analog [...
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259 views

Can't set sample rate to 44100 Hz when using loopback in ALSA

I have set up ALSA like this to play to and record from loopback devices: # output device pcm.loopout { type dmix ipc_key 328211 slave { pcm "hw:Loopback,0,0" period_size 1024 ...
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1answer
115 views

How can two applications read from the same (digital) sound input in Linux/ALSA?

I have a sound card with an AES/EBU input port that I want to access with two applications simultaneously. I want to record the input to a linear WAV file in real-time while also streaming it through ...
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1answer
326 views

Create custom PCM device in ALSA

How can I create custom PCM device with dmix-slave and use it in audacious without touching global PCM? Is it even possible? I tried miscellaneous configurations but no luck. ALSA asound.conf syntax ...
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1answer
437 views

5.1 Surround sound will not keep its configuration

in pavucontrol I have my output set to Digital Surround 5.1(IEC958/AC3) When I open a video with VLC (my preferred option) OR GNOME Media player I hear no sound. VLC is configured to use pulseaudio ...
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533 views

Distorted/crackling sound coming from when ALSA's .asoundrc file uses hw type instead of plug type

I have XBMCbuntu installed on a HTPC running Ubuntu 14.04 and Kodi 14.1. I have been trying to install and run Steam so that I can stream games from my gaming PC. I followed the steps from this guide ...
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1answer
6k views

Kali Linux No Sound

Basically I misstakenly removed alsa config because of this guide http://hackerzelite.blogspot.in/2014/03/fix-sound-driver-on-kali-linux.html . And there is no sound icon now, as well no sound. But ...
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1answer
210 views

Korora laptop / Trisquel 7 audio not working

I have Trisquel 7 netinstall installed on a ThinkPenguin Korora laptop. nik@Penguin-Korora:~$ lspci|grep Audio 00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 09) 00:1b.0 ...
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8k views

Linux Mint and sound problems

I'm running into a no audio problem on the latest version of Linux Mint (Rebecca). I've uploaded the data to here for anyone to peruse, and hopefully find a solution to this problem: http://www.alsa-...
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1answer
670 views

tidal-hifi playback with alsa stops after every song

I am using tidal hifi for music streaming under linux (Mint 17, 64bit) with Chrome. To achieve bit perfect playback I turn off pulseaudio ($killall pulseaudio) to purely use alsa for audio processing ...
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154 views

Old ALSA application and PulseAudio

I have an very old application, from repository - it's soundmodem (for amateur AX.25 radio packets). I'm using Linux Mint 17 with default sound driver, it's PulseAudio. Options in application ...
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522 views

Arch linux - sound disappeared after the installation of pulseaudio

I'm using Arch linux with the above onboard sound card : 00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01) Subsystem: Dell Device 0220 Flags: ...