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, mbrace7for...@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@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Fwd: Alsa Underrun problems with Skype and Skype ALSA problem on Ubuntu jauntu
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 lols...@012.net.il To: geoffrey mendelson geoffreymendel...@gmail.com Cc: mbrace7for...@aim.com; linux-il@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, mbrace7for...@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@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Fwd: Alsa Underrun problems with Skype and Skype ALSA problem on Ubuntu jauntu
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 lols...@012.net.il To: geoffrey mendelson geoffreymendel...@gmail.com Cc: mbrace7for...@aim.com; linux-il@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, mbrace7for...@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@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
