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

[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 ubuntu forums that smbody  just installed skype build with 
static oss bound, 

but I woul dlike 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. 

> 
 



 



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