Pulseaudio

[Karl Larsen]

Nigel Henry wrote:
> On Sunday 13 January 2008 17:03, Karl Larsen wrote:
>   
>>     Pulseaudio is an interesting old way to allow audio to be carried or
>> duplicated and perhaps other useful things. I am an Electrical Engineer
>> and studied the idea of mixing a lot of audio signals on a high
>> frequency. This is what Mr.Lennart Poettering  is trying to do with what
>> he calls Pulseaudio. I don't know just how it is done but it does work.
>>
>>     I got Pulseaudio working on my Fedora 8 operating system and it
>> appeared to be working properly, but I didn't know enough about it to
>> test many features. But I did discover that two non-Fedora applications
>> called Skype and gMFSK will not function with Pulseaudio in operation.
>>
>>     This problem I ask Lennart at Pulseaudio and he said this:
>>
>> On Thu, 10.01.08 09:13, Karl Larsen (k5di at zianet.com) wrote:
>>  > >     I got pulseaudio working on F8 and the normal audio on movies and
>>  > > such is fine. But I tried gMFSK which is an application that uses the
>>  > > sound-card DSP engine. It looks fine but when I try to receive digital
>>  > > data it suffers very bad interference and it will not transmit because
>>  > > it says /dev/dsp is busy.
>>
>> gMFSK seems to be a program that uses OSS (/dev/dsp) directly. For
>> those you have two options:
>>
>> 1) Use "padsp" to redirect it to PA. Just prefix your application call
>>    with "padsp".
>>
>> 2) Use "pasuspender" to temporarily tell PA to give up access to the
>>    audio device. This is probably the better way to fix this if you
>>    need lowest-possible latencies. (I am not sure if you need those,
>>    but I assume so, given this seems to be some modem sw?)
>>
>>  > >     Sype comes up fine and appears to receive data but when I try to
>>  > > call anyone or answer a call they can't hear me at all, and all I hear
>>  > > is noise.
>>
>> Skype is closed source software. It's very difficult to get this
>> working out of the box for you, due to its nature.
>>
>> http://pulseaudio.org/wiki/PerfectSetup#Skype
>>
>> Lennart
>>
>> -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net
>> ICQ# 11060553 http://0pointer.net/lennart/ GnuPG 0x1A015CC4
>> _______________________________________________ pulseaudio-discuss
>> mailing list
>>
>>     I did both things and neither got my gMFSK or Skype working. There
>> is more to this than I have knowledge of.
>>
>>
>>     This problem caused me to delete all the pulseaudio from my F8
>> computer with yum remove *pulseaudio" which was a huge list! I did it
>> and nothing worked on the F8 system after that. I had to re-load F8 and
>> it came up working fine. But now, after removing the pulseaudio software
>> I cannot yum vlc from livna any more.
>>
>>     Pulseaudio is a big error in my opinion. It does nothing a normal
>> user of Fedora wants but raises all kinds of issues with other software.
>> I really think Fedora needs to leave Pulseaudio off it's systems.
>>
>> Karl
>>     
>
> Hi Karl. Good evening (as it is in northern france).
>
> It's never a good idea when Yum or Apt wants to remove half the operating 
> system to just say yes, when you want to remove a package.
>
> All you need to remove in the case of pulseaudio is the package 
> "alsa-plugins-pulseaudio". If you are using KDE, this should also remove the 
> KDE stuff for pulseaudio. I see that you are using VLC, and that uses SDL 
> stuff, so you also need to add a line to /home/user/.bashrc, as below.
> unset SDL_AUDIODRIVER. Adding that line doesn't appear to affect playing DVD's 
> though, as my DVD's play fine without that line.
>
> I'll come back to the libx264 problems on your "updates" thread.
>
> Al the best, and keep on trucking.
>
> Nigel.
>
>
>
>   
    Thanks Nigel. I guess the lesson learned is to not use yum to remove.


Karl


-- 

	Karl F. Larsen, AKA K5DI
	Linux User
	#450462   http://counter.li.org.
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