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

learn more… | top users | synonyms

4
votes
0answers
638 views

Sound Driver is messed up, and mic doesn't work correctly under ubuntu 12

Quick Ubuntu 12.04 sound pops on boot and shutdown, and MIC picks up non-existent static. Edit: please note, Audio out is fine. Issue On shut-down and boot I often hear a loud blast from the ...
1
vote
0answers
41 views

Strange ALSA/Pulseaudio Bugs

I have some serious issues with my sound on my xubuntu 14.04. Every 2-4 seconds my sound makes some noises. The volume bar in the top right won't stop showing volume changed to 100% and within 0,5sec ...
1
vote
1answer
209 views

No sound over HDMI running 15.04 on NUC D54250WYK

After upgrading to 15.04, and maybe another update round, I can't hear any sound over HDMI. A sound device seems to exist: $ aplay -l **** List of PLAYBACK Hardware Devices **** card 1: PCH [HDA ...
4
votes
2answers
8k views

Microphone - static background noise suppression

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
votes
0answers
67 views

Ubuntu 15.04 -another sound problem

I thought Ubuntu had fixed the sound problems - it worked well in 14.10, but re occurred with the 15.04 upgrade. The OS only picks up the digital output of the VT82xx [HDA VIA VT82xx] (device 1), not ...
1
vote
1answer
14 views

What are the Timer and Announce ports of ALSA's System MIDI client and how to use it?

The command aconnect -lio always shows these entries: client 0: 'System' [type=noyau] 0 'Timer ' 1 'Announce ' client 14: 'Midi Through' [type=noyau] 0 'Midi Through ...
1
vote
1answer
30 views

How to send MIDI raw data to a MIDI device node?

Context and experiments I have a virtual MIDI device, as card #1, named VirMIDI. There are associated ALSA sequencer clients (not raw MIDI), as Virtual Raw MIDI 1-0 to Virtual Raw MIDI 1-3. There are ...
0
votes
1answer
26 views

How to display ALSA raw MIDI connexions and devices?

Background For ALSA's MIDI sequencer connexions, one can use aconnect -lio. If I run FluidSynth (or QSynth) with the alsa_seq MIDI driver, I can see FluidSynth displayed by aconnect -lio, but not ...
2
votes
0answers
68 views

no sound in system and alsamixer says :“The sound device does not have any control”

I m facing sound problem. There is no sound in my system.When I looked for alsamixer, there it says :"The sound device does not have any control". But if I connect it to external speaker its works ...
1
vote
1answer
82 views

Alsa, internal mic on macbook works sometimes

I've had my internal microphone working twice. I'm using simplescreenrecorder, and the internal microphone was working when the input options were set to alsa and [default] default source. So I had it ...
0
votes
1answer
42 views

Audio Card can't be found

I had a similar problem as this person. Namely, I tried to install a Realtek audio driver and my laptop could no longer find my audio card. I followed the solution given in the post I linked, but no ...
1
vote
1answer
243 views

No sound out of Ubuntu 15.04

There is literally no sound, I've tried every solution online I could find. It start when I unplugged my Microphone. I've tried reinstalling alsa and pulseaudio, booting in different kernel, ...
1
vote
3answers
2k views

Playing a MIDI keyboard without JACK / how to use JACK and PulseAudio/ALSA

So, I havea MIDI keyboard but I'm not really motivated to play when I have to set up JACK and everything else just to get one sound out of it. The problem is that whenever I start JACK I can't play ...
1
vote
0answers
33 views

Sound not working in Ubuntu 14.04LTS

i have installed ubuntu 14.04 LTS with windows 8 in different partitions. Sound is not working in ubuntu. I checked all answers for all similar questions but nothing helped. I have an asus n-550jk ...
0
votes
0answers
37 views

Ubuntu 15.04, 6 channel suround sound on 3 ports audio

My motherboard have 6 channel capability chipset, but it only have 3 ports audio jack: line in(stereo), line out(stereo), and mic. My question is : how to configure / swap line in(stereo) port and mic ...
0
votes
0answers
31 views

Sound device missing after ubuntu 15.04 upgrade (HDMI / ALC283) [duplicate]

I just upgraded to ubuntu 15.04 and noticed that my HDMI audio device is totally missing from the sound menu / application in settings. It looks like there is a device, but it's number 1 instead of 0? ...
0
votes
0answers
43 views

Sound issues. ubuntu thinks my headphones are always plugged in

Alright regardless of the fact that my headphones are plugged in or not ubuntu seems to claim that my headphones are plugged in. I checked under sounds settings in the main settings and the only ...
0
votes
1answer
99 views

Help ubuntu sound issuse's (14.4)

I am really new to Ubuntu. I have version 14.04 and I have been having a tonne of problems with sound; my issues are: There are no sound drivers showing up on system menu. When I get sound to work ...
8
votes
5answers
16k views

Pulseaudio not detecting bluetooth headset automatically

The Pavucontrol on my Xubuntu 13.10 detects my bluetooth headset, but only after I type the commands : pulseaudio -k sudo alsa force-reload After a few seconds the headset appears in the ...
3
votes
1answer
4k views

ALC892 Low sound issue fixed with changing alsa config, why does it work?

I updated to 14.04. My sound immediately transitioned from being normal to sounding extremely quiet, sounding like it was at 5% of max volume, though all my volumes were set properly. I tried lots ...
0
votes
0answers
17 views

Cannot adjust S/PDIF in alsamixer

I experience that no audio comes out of the HDMI port on my graphics card. I suspect that it simply does not support audio via HDMI, but I have not been able to tell from Googling. When I first ...
1
vote
0answers
15 views

Control Alsa in real time with external controller?

Okay so after hunting down old threads and questions, I feel it's best to just ask this and see if I can get some help. My question is how in the world do I control Alsa externally with my Korg micro ...
2
votes
1answer
70 views

Can't redirect stdout of `alsactl monitor`

When I run alsactl monitor, I see output as such when I adjust the volume: card 0, #24 (2,0,0,PCM Playback Volume,0) VALUE card 0, #24 (2,0,0,PCM Playback Volume,0) VALUE However, when I try to ...
1
vote
2answers
160 views

How to control speaker balance or disable one speaker?

I have a laptop with two speakers: one is blown and playing unpleasant distorted sound. How do I permanently deactivate it or control it using balance? A terminal command is preferred, I reckon. ...
13
votes
5answers
21k views

Command to mute and unmute a microphone

During voice / video conversations online I would like to mute/unmute the microphone without having to go through all these steps each time: Sound indicator, Sound preferences, Select Input, Mute ...
3
votes
3answers
1k views

How do i find exact status of my microphone mute or unmute or the volume level of mic using command line?

This is very odd, i have one default microphone and i have another second microphone. When i use this command it always shows not muted but the microphone volume is 0%. How or what is a way i can find ...
1
vote
0answers
17 views

Auxiliary port not working (Ubuntu 14.04)

I recently installed Ubuntu 14.04 on my Alienware m14x laptop; it is my first experience with Ubuntu so I might be missing something simple here. All sound works fine coming through the internal ...
0
votes
1answer
272 views

No sound and 'Dummy Output' in Ubuntu 14.04

I'm running a dell XPS 13 (developers edition). I had Ubuntu 14.04 from the beginning and for about 2 months everything was working great. After a while, sometimes when i had my earplugs plugged in, ...
50
votes
3answers
56k views

Is there another way to restart the sound system if pulseaudio/ALSA don't work?

I was listening to music, and my sound suddenly went dead in all my applications. I'm using Ubuntu 12.04, which uses pulseaudio, so I tried sudo /etc/init.d/pulseaudio restart, but nothing happened. ...
1
vote
1answer
3k views

ALSA samples capture: cannot open device

I'm quite new to Linux (Lubuntu 12.04 for sake of precision) and ALSA programming at all. I'm trying to write a C program to capture audio from internal PC microphone for processing it. So as first ...
1
vote
1answer
94 views

after reinstall Alsa and Pulse Audio, system setting missing

I followed: HDMI is not displayed in the "Sound" settings on Ubuntu 14.04 LTS this article to reinstall alsa and pulse audio, because when using hdmi, the sound not work. I did: sudo ...
1
vote
0answers
26 views

Audio capture from multiple USB sound cards In Lubuntu

How do i capture sound from multiple sound cards simultaneously in lubuntu 14.04? At the moment I have installed Audacity but it can only record sound from a single device at a time. Is there any ...
0
votes
0answers
13 views

Alsa sound card question

I am trying to wade my way through the device tree concept. I have found on my platform that if I use a device tree overlay file for a particular sound module then perform the following on the ...
0
votes
0answers
20 views

Internal speakers not in output devices

Problem: My internal speakers aren't listed in the output devices tab resulting in no sound coming out of them. Just tested, headphones/headset also don't work. System does "see" sound card Things ...
1
vote
1answer
33 views

Alsamixer or Pulseaudio reverts PCM channel level to 100% in 14.04

Can anybody help me figuring out why every time I change volume with media keys, or restart my Dell E1405, the PCM slider goes up to 100%? How do I make it stay at 81% (which is one step below the red ...
0
votes
0answers
39 views

Audio capture from Stereo to USB sound card

I have a 4 channel stereo input to USB sound card that I have connected with a odroid-c1 sbc running lubuntu 14.04. I need to capture the audio from USB sound card. For this I had pulseaudio installed ...
0
votes
1answer
31 views

HDMI is my card 0

I am dual booting linux and windows 8 on a lenovo yoga 2 pro. My speaker volume isn't working but headphone volume works fine. Alsa controls my audio and the speaker volume is on. I found that my ...
0
votes
0answers
38 views

Ubuntu sound won't work after downloading necessary packages

I can't get the sound to work on my chromebook while running Ubuntu. I've done it on this very machine before and it's worked fine, but I had to do a powerwash and now the sound won't work, even ...
1
vote
1answer
15 views

Why is single_cmd Alsa option for debugging only?

According to Alsa documentation, single_cmd option is for debugging only : single_cmd - Use single immediate commands to communicate with codecs (for debugging only) NB: If you get ...
0
votes
0answers
43 views

Desperate with the microphone

for a few days I have been trying to get the microphone to work ( I need it to work with a specific program, called linphone). The problem is, I can record using either audacity or arecord, but when I ...
3
votes
2answers
359 views

Audio Playing on Headphones and Speakers (Ubuntu 15.04)

I recently upgraded from Ubuntu 14.04 to Ubuntu 15.04. The upgrade went fine, except that now audio plays from the headphones and the speaker at the same time. My speakers are plugged into the ...
0
votes
1answer
1k views

thinkpad t440p annoying static noise when I plug the speakers realtek ALC292 HDA Intel PCH 13.10

some laptop thinkpad t440p , with windows 8 is fine no noise. with ubuntu 12.04 and 13.10 , if I plug the speakers without music but with the volume up(even low) there is annoying noise come out. ...
1
vote
0answers
245 views

14.10, 15.04 - HDMI audio not working on Dell Vostro 3750 - nVidia card not detected by aplay -l

Summary: Sound card on nVidia is not detected by ALSA so even though video works on HDMI, no audio plays. It is detected in pci. How can I get ALSA to detect the nVidia card? Output of aplay -l ...
0
votes
0answers
72 views

Sound Problem: Output sound get fixed with Headphones only

I am using Ubuntu 14.04 (64 bit). After installing the default sound system worked fine. Last night I was watching videos on youtube plugging my headphone. Headphone also worked well. But when I ...
1
vote
0answers
142 views

more audio problems in 15.04

recent update has brought a plethora of audio problems. PC 15.04 x64, DESKTOP_SESSION=ubuntustudio -keyboard volume controls don't work anymore (known issue, IIRC) -Panel volume control on the ...
0
votes
1answer
33 views

Fast user switching mutes my volume

Each time I log in to Ubuntu 14.04, using fast user switching, my volume gets reset to about 10% and muted. I have to unmute and slide the volume control back to where I want it. This even happens if ...
0
votes
0answers
37 views

Alsa sometimes fails to load at laptop startup

I've Lubuntu 14.04.2 LTS installed on my Toshiba L30-10T laptop. Sometimes, Alsa fails to load at laptop startup : I've no sound on my computer and I've to type sudo alsa force-reload one or two times ...
0
votes
0answers
21 views

Help setup alsa loop device

I have search the internet trying to find out how to setup an alsa loop device(s) in 14.04, however there is some many threads that are old or dead ends. Is there a way to do this other that using ...
2
votes
0answers
134 views

alsamixer can see microphone, but pulseaudio doesn't

I've installed Ubuntu 15.04 on my Pixel LS laptop with a patched kernel (https://github.com/tsowell/linux-samus). Problem is - pulseaudio (pavucontrol) doesn't recognize the microphone. If I run ...
0
votes
2answers
35 views

How do I install alsa-lib from launchpad?

https://launchpad.net/ubuntu/+source/alsa-lib What do I click on to install that for Vivid Vervet?