Questions related to PulseAudio, the default sound server in Ubuntu, which manages all audio devices like internal and external sound cards (and therefore all speakers, microphones, headsets, etc.) through its ALSA backend.

learn more… | top users | synonyms

4
votes
2answers
660 views

Strange sound artifacts when using Firefox while music is played

I listen to music using Rhythmbox. Meanwhile I browse web with Firefox. When a page is loading, I switch tabs or I scroll up-down a site (and sometimes randomly), terrible "cracks" are audible, and I ...
9
votes
1answer
11k views

How do I run PulseAudio in a headless server installation?

PulseAudio is the standard audio server in desktop installations. However in a server installation audio services and thus PulseAudio are not provided. How do I install and make use of PulseAudio in ...
7
votes
5answers
36k views

Using microphone input port as headphone output

I have one audio output jack and one audio input jack on my laptop. I want to use it for real time audio mixing, and I need to have another discrete output for headphones that is independent of the ...
1
vote
1answer
1k views

Fix pavucontrol Alsa mixer with creative card

I have been desperately trying to get my creative x-fi soundcard to work with my 10.10 install and I am almost there! I have 1 speaker working and when I open volume control I see that my device is ...
6
votes
2answers
5k views

Setting microphone input volume using the command line?

I have a USB mic I keep plugging into my laptop dock. When I drop into the dock I'd like the mic setup as my current audio input automatically. I do have a "I'm docked" script I run which sets ...
43
votes
4answers
12k views

How do you mute from the command line?

How do you mute the sound system from the command line?
10
votes
1answer
6k views

My sound stopped working today, how can I fix it?

This seems to be a problem with pulseaudio. I was logged in over VNC on my phone and started playing a video this caused X to crash (as sometimes happens). I restarted and suddenly the sound doesn't ...
9
votes
2answers
1k views

How to disable Alert volume from the command line?

There is an option in the Sound Preferences dialog, Sound Effects tab, to toggle Alert volume 'mute'. It works and suffices for my needs to disable the irritating system beep/bell. However, I ...
7
votes
3answers
2k views

Stream audio to mobile device

I'd like to stream the audio from Ubuntu 10.10 to my HTC Desire HD (Android 2.2). I've seen solutions so far for streaming from audio players, but I'd like to stream any audio output from the PC to ...
11
votes
3answers
2k views

Assign programs permanently to different sound-outputs in Pulseaudio?

I want to assign Skype input and output to my USB-headset while the rest of my laptop uses the internal sound-card. This is an easy task with PulseAudio Volume control (pavucontrol). The only problem ...
1
vote
2answers
2k views

How do I use my headphones and microphone?

The headphones and microphone on my Ubuntu 10.10 work fine. But when I start an audio conversation using empathy or pidgin, my computer hangs, the microphone doesn't work, and I can't record anything. ...
3
votes
1answer
1k views

Flash Breaking Pulseaudio?

Since posting this question, it has been revealed that the problem was with mpd — not Flash. Here is the question I posted in an attempt to find a fix. Every time a Flash object with sound (such as a ...
28
votes
8answers
5k views

How to automatically change volume level when un-/plugging headphones?

What I want is the following: When I plug in my headphones, I want the sound to be un-muted and set to a specific volume level. When I unplug my headphones, I want the sound to be muted (or set to ...
6
votes
3answers
4k views

Revert audio configuration to defaults

I messed up the audio on my 10.10 installation. I had a problem of having no sound when plugging in the headphones and following many different solutions for that problem I (de)installed several ...
5
votes
2answers
957 views

How do I control Front and Back volume independently with cloned stereo signal

I have my 7.1 soundcard set to stereo and plugged in two stereo thingies (a. my desktop speakers b. my stereo) to the front respectively rear plug. Now I would like to an easy way to mute/volume ...
4
votes
2answers
4k views

“Waiting for Sound System to respond.” error dialog

I'm having a nasty problem with the Sound Menu on my Ubuntu 10.10 Installation. What happens is that the sound control icon is blocked, and I can't control the master volume. If I try to get to the ...
1
vote
1answer
2k views

Internal microphone does not work

I have an Acer Aspire One D250 with Ubuntu Netbook Edition 10.10. The internal microphone is not working. What can I do to fix this? Audio Device: N10/ICH 7 Family High Definition Audio Controller
5
votes
1answer
620 views

How can I determine what codec is being used? [closed]

This forum comment and this superuser answer suggest that the audio compression contributes to loss of quality. I've noticed that music played over my BT setup sometimes pitch bends in ways I don't ...
8
votes
1answer
1k views

What is the command to know my PulseAudio version?

What is the command to know my PulseAudio version?
8
votes
2answers
2k views

How can I automatically switch to USB headset when plugged in?

Whenever I plugged in my old audio jack headset, sound was immediately diverted from my speakers to the headset speakers, and the microphone was immediately available. When I plug in my new USB ...
15
votes
2answers
1k views

How do I make my volume indicator operate in decibels instead of percentage?

When I want to adjust the volume of anything I'm doing, I find that using the volume controls built into Ubuntu is little but confusion. When the volume is around 100%, dropping it several increments ...
7
votes
2answers
3k views

Realtime noise-removal with PulseAudio?

Is it possible to do realtime noise-removal with PulseAudio, so the sound output that's coming out is smoother?
1
vote
3answers
810 views

How to get non-delayed sound and VOIP working in ETQW?

The sound in Enemy Territory: Quake wars used to work fine before, except that using the VOIP hotkey would crash it outright. Now, after some fiddling, I at first had sound that was delayed by half a ...
2
votes
0answers
507 views

Audio input disappears randomly [closed]

Same question asked in Launchpad and Ubuntu Forums and LinuxQuestions I'm running Lubuntu 10.10 on a HP Compaq nx6325. I use it to digitize tape records - connecting the tape deck's headphone output ...
4
votes
4answers
3k views

No sound after PulseAudio reinstall

I encountered an audio bug and reported it on Launchpad. There I was asked to reinstall PulseAudio. That sounded dangerous, so I tried it on a VirtualBox virtual machine I had lying around. (this VM ...
3
votes
2answers
1k views

How to understand the Audio Subsystem?

I already used a lot of Ubuntu versions, I started with 5.10. But eversince I had issues with the audio subsystem. No matter what hardware, currently I have two computers and both have issues. On my ...
2
votes
2answers
455 views

Rhythmbox sound cuts, cracks when other programs are running

I upgraded to Ubuntu 10.10. When Firefox or my photo album is open the sound in Rhythmbox cracks and cuts like someone scratching a disc with a needle. On its own or with Evolution open the sound is ...
4
votes
2answers
7k views

How to remove Nvidia HDMI audio output in PulseAudio? [closed]

At each reboot, PulseAudio set the profil "HDMI Audio Output" as the default one. So, at each reboot, I haven't the sound under Maverick, and need to reconfigure it each time, to the "Analog Output" ! ...
4
votes
1answer
507 views

How can I monitor the output of an already running program?

I am trying to figure out what is going on with pulseaudio on my computer because almost every 20 seconds of listening to a song it freezes. I've tried killall pulseaudio && pulseaudio to try ...
28
votes
2answers
45k views

How can I restart pulseaudio without logout?

Sometimes pulseaudio service stops and it doesn't restarts itself when I open an audio file with banshee or totem. How I can make it start again without logout?
10
votes
1answer
7k views

How do I change the way Ubuntu adjusts my volume mixer levels?

I've had a mildly annoying problem with my sound for quite awhile now, and I've finally decided it's time to do something about it. Every time I adjust the main volume slider in the toolbar, or use ...
35
votes
2answers
55k views

How can I change the default audio device from command line?

Ubuntu's desktop gui is great for changing audio settings (System->Preferences->Sound), like the default input/output device and setting the volume. However, I would like to be able to do these ...
1
vote
2answers
673 views

Why Audio Device shows up in Hardware but not under Input/Output?

I have a pair of the Asus HS-1000W-R wireless headphones with microphone that were working just fine with Ubuntu 10.04. But we had to move cubicles last weekend and since setting the computer back up ...
2
votes
2answers
672 views

How to setup Gnome & KDE to use the same soundsystem?

Using maverick ubuntu with added kubuntu-desktop: I look at KDE systemsettings in the multimedia section. Under phonon backend it says I use xine. No option to add or change anything here. Now ...
10
votes
4answers
17k views

keyboard shortcut/command to mute/unmute microphone

During voice conversations in Skype/Gmail/etc. I would like to mute/unmute the microphone without having to go through all these steps each time: Sound indicator Sound preferences Select Input ...
3
votes
2answers
408 views

How can I make the default sound input for Skype persistent?

In order for Skype to work with the mic in my webcam, I need to change the sound preferences -> Input to "0825 Analog Mono" (default is "Internal Audio Analog Stereo"). However whenever I reboot this ...
3
votes
1answer
843 views

Reducing audio delay from redirecting input to output

I tried using the solution presented in a related question for redirecting my audio input to my output, but the problem is that there's a very noticeable lag. It's especially obvious to me because I ...
3
votes
1answer
1k views

Unable to use built-in mic on Lenovo Thinkpad x300 due to regression bug from 1 year ago [closed]

I'm using a LiveUSB of Ubuntu 10.10 to see if this bug I reported in Aug 2009 has been fixed. Sadly, it seems like it has not. This is what I did to test: I booted with a Ubuntu 10.10 LiveUSB, I ...
5
votes
1answer
1k views

No sound after resuming from suspend?

When my system gets to suspension while the song being played, and got resumed from the suspension, I found my Rhythmbox player running but no sound coming even from the system. I had to suspend it ...
3
votes
2answers
2k views

crackling audio with Pulseaudio

This is a problem that I have been experiencing for a while now (since 9.10); before that I used a beta driver from Creative (I have a SB X-Fi on my Dell XPS 710), and even though, I have to compile ...
7
votes
3answers
244 views

Rhythmbox Plays Static

Rhythmbox works fine, but sometimes certain tracks won't be played; sometimes when certain tracks are played all I hear is static/cracking sound with basically no sound at all. If I restart rhythmbox ...
22
votes
6answers
26k views

How to temporarily disable PulseAudio?

Just wondering if there a way to temporarily disable PulseAudio as I am trying to run a specific Wine game (Left 4 Dead 2) and it makes the game crash occasionally. If I kill the process it ...
11
votes
2answers
7k views

Autoconnecting Bluetooth Devices

Is there a way to set the Bluetooth in Ubuntu to autoconnect to devices it is paired to when it is turned on. Furthermore, is there a way to automatically change the sound output to a Bluetooth ...
3
votes
2answers
1k views

Why does Ubuntu use Pulseaudio? [closed]

I'm not here to criticize pulseaudio, but I find it immature and unnecessary. It eats system resources, causes confusions, and complicates the system by adding an extra layer without seemingly clear ...
3
votes
2answers
2k views

Sound over HDMI not working any more after waking up from suspend

So far, suspending to ram and waking up from it works. My laptop's external display (connected via HDMI) works, too. However, what doesn't work is the sound, which works before suspending, of course. ...
7
votes
2answers
3k views

How can I replace pulseaudio with alsa?

I was wondering if there was an easy way of replacing pulseaudio with alsa. Pulseaudio is the biggest problem I am currently having with Ubuntu and I really want these problems to end.
3
votes
3answers
734 views

Lost audio after upgrading from 10.04 to 10.10

Just did an upgrade on my laptop from 10.04 to 10.10, and audio doesn't work at all anymore. I have the indicator applet, and it seems like everything is working fine. I've even tried installing ...
1
vote
1answer
959 views

Pulseaudio playing surround through headset

I am using xubuntu 10.04, and I am having issues with the sound. First things just sounded strange, then I figured out that I am actually getting the surround left and surround right sound in my ...
6
votes
3answers
1k views

How to clone audio output?

I have two sets of speakers: one is set of stereo loudspeakers with a subwoofer (not 2.1, just a sub with a low-pass filter) and the other is a set of stereo speakers with a headphone jack, used ...
2
votes
2answers
1k views

Java and ALSA problems [closed]

I'm trying to use a Java-based application that requires sound in Ubuntu 10.04 using sun-java from partner repos . However, the sound is way too fast. It seems like a chipmunk got into my speakers. :) ...