Alsa Underrun problems with Skype and Skype ALSA PulseSound Stuttering

[mbrace7forums at aim.com]

http://www.howtoforge.com/how-to-fix-the-sound-issues-between-skype2.0-and-pulseaudio-on-fedora9









This maybe the answer to stuttering Skype Pulse sound. It means adding 3 groups 



pulse



pulse-access



pulse-rt









then altering /etc/pulse/daemon.conf changing settings.











high-priority = yes

nice-level = -11

realtime-scheduling = yes

realtime-priority = 5 

resample-method = src-sinc-best-quality











Moshe









-----Original Message-----

From: Lev Olshvang <lolshva at 012.net.il>

To: geoffrey mendelson <geoffreymendelson at gmail.com>

Cc: mbrace7forums at aim.com; linux-il at cs.huji.ac.il

Sent: Fri, Sep 4, 2009 10:46 am

Subject: Re: Alsa Underrun problems with Skype and Skype ALSA problem on Ubuntu jauntu













Hi Geoff, 

 


Perhaps you know what is going wrong with Ununtu jaunty Skype - recently 
I upgraded from ububtu 8.10 to 9.04  and although sound work well with 
all non-skype applications the Skype complains that it have problem with 
audio playback and capture device. 

 


Strace shows the problem is : 

 


ALSA lib pcm.c:2205:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi 

 



And I saw in=2
0ubuntu forums that smbody  just installed skype build with 
static oss bound, 


but I woul=2
0dlike to stay with alsa model. 

 


 



geoffrey mendelson wrote: 


> 


> On Sep 3, 2009, at 11:44 PM, mbrace7forums at aim.com wrote: 


> 


>>  Sound on Skype is very unpredictable. Sometimes it works well and 
>> sometimes it doesn't. I often get brake up (pauses) with speech. Or I 
>> find that the Skype Sound settings in Options have changed. Or before 
>> it worked now it won't. 


> 


> I get the same problems (breakup) and other random problems under both 
> MacOS and Windows on several different computers. I think it is a 
> SKYPE problem, not a Linux one. 


> 


> You can turn on a display of packet information and see how many 
> dropped or out of sequence packets you get. You can improve it if you 
> open a UDP port on your router for SKYPE. The port is a user setting 
> so you can do it for more than one computer if you share a router. 


> 


> BTW, SKYPE is very careful to keep the exact details of their protocol 
> hidden, though some people have packet sniffed it. Because it is 
> hidden, one of the things I can't do is to give it priority (QOS) over 
> other things on my router. Therefore 
SKYPE is often a less than 
> desirable way for me to communicate. I use SKYPE, and yes they do get 
> some of my money, but most of my money goes to SIP 
providers who use 
> an open protocol. YMMV. 


> 


> 


> Geoff. 


> 

 





 




 





_______________________________________________
Linux-il mailing list
Linux-il at cs.huji.ac.il
http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il


 



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.cs.huji.ac.il/pipermail/linux-il/attachments/20090906/4c1a3113/attachment.html>