I think no
send your airtime logs

and perhaps try to upgrade your installation with 12.04

HI guys I've tried all of the sound system options and no joy. I'm going to upload to 12.0.4 but I fear thats not the issue as I've had similiar issues on another 12.0.4 box recently too. 

This is an old install it's been working fine for months. Installed via the Automated Install method and have been updating using synaptic ever since.

By chance, are you running on a virtual server?

Hey! How long are your playlists these days versus when you started off? Maybe you're bumping into this?

Are you running pulseaudio and alsa on the same machine?
That is are you using the same machine for web browsing etc,that you use for Airtime?
Lets disable pulseaudio

pico /etc/pulse/client.conf
Then and change the line: ; autospawn = yes to autospawn = no
yes is default so you might just have to put autospawn = no (watch for that ;)

Now we need to kill and running instances of Pulse Audio with:

killall pulseaudio

 (restart the machine does this too but we have some more fixing so not now)

After that run

ps -C pulseaudio

to check if pulseaudio is still running.  If you do not get back something similar to:

PID TTY          TIME CMD
17065 ?        00:00:02 pulseaudio

Then pulse audio is still running, however if you get back:

PID TTY          TIME CMD


without any information its dead and gone

If you want a volume control then install gnome alsamixer

There are many tutorial which suggest purge or remove pulse audio but since 12.04,the default mixer(sound server) is pulse audio and its wrap into your browser and many other application,so if you remove or purge pulse audio,then not even your browser might work properly.

Should you remove pulse audio reinstall it and follow the procedure above

You can find a lovely read up here

And look at Step 1.

Next the liquidsoap fixed

These are the values you will now put in your liquidsoap

Samplefreq=44100Hz,     in liquidsoap this is called  frame.samplerate
 Bufsize=1764B,             in liquidsoap this is called  frame.size
 Frame=4B,                    leave these alone no need for tweaking
Periods=55                    leave these alone no need for tweaking

I divide my buffer size by 4  (1764/4 =441) and start with 1/2 the size of the recommended buffersize (2x441) =882.

Why i divide it by 4 is that the buffersize should be multiple of the recommended (1764).

If you are not too good at maths just divide it into two and start with that number (its for tweaking until you reach a sweet spot.) there is no hard and fast rule here.

Now edit your liquidsoap ls_script and put this at the top in the "set" declaration section

# for Alsa
set("frame.size",800)
set("decoding.buffer_length", 20.)
set("frame.channels", 2)
set("frame.samplerate", 44100)

now tweak away,nobody can give you the exact values so just increase or decrease the value of the size and buffer lenght seperately until when you run the above command you see the following


2014/02/20 22:46:57 [alsa_in(default):3] Samplefreq=44100Hz, Bufsize=1764B, Frame=4B, Periods=55
2014/02/20 22:46:57 [alsa_out(default):3] Using ALSA 1.0.25.
2014/02/20 22:46:57 [alsa_out(default):2] Falling back on interleaved S16LE
2014/02/20 22:46:57 [alsa_out(default):3] Samplefreq=44100Hz, Bufsize=1764B, Frame=4B, Periods=55
2014/02/20 22:46:57 [threads:3] Created thread "wallclock_alsa" (1 total).
2014/02/20 22:46:57 [clock.wallclock_alsa:3] Streaming loop starts, synchronized by active sources.

No underruns.
 but if you were paying attention and have not fall asleep,then you will see that my frame size is 800 and not 882

So expect a line like this if you use none multiple of the recommended

2014/02/20 22:46:57 [frame:3] Frame size must be a multiple of 1764 ticks = 1764 audio samples = 1 video samples.

• Nobody can guarantee you the settings for your card ,All soundcard differs by vendor even two same card can differ (not identical twins). I think that's why pulse audio came about
  
• If you do not know how to modify an ls_scipt then read the first part of this tutorial
• IMHO,I think the sound output was design for monitoring,but if you get it to work with the above,it really sound excellent.
• Remember you do not have to restart your LS until you get that sweet spot.
  

Good luck

Ps. I give you the broad parameters to check and based on @marcus gregory comments below

If you have a 44100 card (the default) you do not need to put in the ls_script,If you have a 48000 then include

Most internal cards comes with an internal clock already set, if you do not need to set buffersize you do not. basically you just have to tweak to get there.

Only read This is you have special Hardware sound cards.( not internals or any device that your OS recognizes)

Just a note,Servers are never comes with idea that you put in a sound card,If for any reason you install a sound card After your OS installation , and you get this

Error when starting alsa_in(default): Failure("Error while setting open_pcm: No such file or directory")!

on Both the input and output,notice I said both then worst case your soundcard might not be properly install.

Ubuntu put the default card already and in most case it will be solve but the correct thing to do is in a terminal type

aplay -l

if no default card is set,You've set your audio device as "default"and you have to defined a default device in your .asoundrc configuration.

the normal thing to do is set this parameter in the .asoundrc configuration.

defaults.pcm.card 0
defaults.pcm.device 0
defaults.ctl.card 0

and look through the modprobe configuration

A good reading to customize special hardware sound cards are found in the gentoo tutorials

Please read the above carefully

Watch

Die Hard: With a Vengeance (1995)

To see how I got my fuzzy maths

An Important Note to All

Please always use (create) a new thread,and then make reference to the older post,no matter how your problem seems similar to the old post.

f.e.

New Topic    I cannot connect to Airtime
Body         In  http://forum.sourcefabric.org/discussion/xxxxx/mixxx not connected,
             I am having now a similar problem,please can you help


The Reason why I ask this is.

•     On mobile devices it creates problem for me to have to scroll to find your problem
•     Sometimes your problem are unique to you and its best express by your own experience
•      Most times the old problem might have been solved and therefore it may no longer be an issue
  

Thanks

Hi,