<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> I seem to have stumbled nearly blindly into a solution for this problem. With the knowledge that pulseaudio is not installed by default (below), and yet I now have it installed, I can perhaps conclude that it was installed as a dependency requirement for VLC or some other media app I was testing. But is it running in the LTSP client sessions? And relatedly, do I have to install pulseaudio in the LTSP image, or does a simple installation on the server machine suffice? In lxterm on the server, I ran pulseaudio and it responded with a message like "Daeman already running." Running pulseaudio in lxterm on the client, it hung without response. An unexpected response. Ctrl-C got me back to the prompt. So it was not clear if pulseaudio was running in the client session. I did a chroot procedure into the LTSP image, then sudo apt-get install pulseaudio, which responded with a message like "pulseaudio already has the most current version installed." Nonetheless I ran the command to update the image. Then rebooted the server and booted up the client. LOCAL SOUND NOW WORKS!! Interestingly, running pulseaudio in lxterm on the client still hangs. So a why-is-that curiosity question still remains. And if I were doing a fresh install of LTSP on Lubuntu, I would still be foggy about exactly what was required to support local sound on the clients, though I have perhaps enough experience now to poke around and get it working. <div class="moz-cite-prefix">On 10/3/2012 11:00 AM, John Hupp wrote: </div> <blockquote cite="mid:506C52F5.7000203@prpcompany.com" type="cite"> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> I haven't gotten very far into this problem yet, but I have found that alsa and pulseaudio serve different functions. This link -- <a moz-do-not-send="true" href="http://askubuntu.com/questions/169797/should-both-alsa-and-pulseaudio-be-installed">http://askubuntu.com/questions/169797/should-both-alsa-and-pulseaudio-be-installed</a> -- indicates that alsa is a layer closer to the sound card drivers (which I read elsewhere are in the Linux kernel), and that pulseaudio is a "sound server," which is a layer closer to the sound apps. So the sound apps talk to pulseaudio, which talks to alsa, which talks to the sound card driver. Though apparently that is not the only way to get the job done, since some apps don't require pulseaudio and deal directly with alsa. It occurs to me that this problem may relate to another open thread I have posted in this list, with topic: "[Lubuntu] Progress on playing a CD?" I found there that no media player I tested knew how to start playing a CD smoothly the way one does in Edubuntu. There, when one inserts the CD and chooses from the popup to play the CD with Rhythmbox, the latter opens up and starts playing the CD. In Lubuntu, neither Audacious, Gnome Mplayer, VLC or Rhythmbox does likewise. Even for the best-performing of them (Audacious and VLC), one has to click at least a couple more items in the program after it has opened. And I couldn't get Gnome Mplayer or Rhythmbox to do the job at all. <div class="moz-cite-prefix">On 10/2/2012 10:33 PM, Jean-Pierre Vidal Piesset wrote: </div> <blockquote cite="mid:CAF2nN_fbPfCDGUdJzJ9896c3o8hinUv7o2-Y5C4hP3GR5A0XEQ@mail.gmail.com" type="cite">There's no pulse-audio on lubuntu by default. I know that because in my Samsung laptop (in wich Linux works horribly) I had to install PulseAudio to get to work the sound (can't figure why with Alsa it does not work and with PulseAudio isntalled it does... ??? ) <div class="gmail_quote">2012/10/2 John Hupp <<a moz-do-not-send="true" href="mailto:lubuntu@prpcompany.com" target="_blank">lubuntu@prpcompany.com</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div bgcolor="#FFFFFF" text="#000000"> Thanks, that's a good starting point. <div> <div class="h5"> <div>On 10/2/2012 12:05 PM, Aere Greenway wrote: </div> <blockquote type="cite"> John: If I could have remembered anything of how do do it, I would have passed it on. It seems I saw something in an Ubuntu forum about configuring Pulseaudio on Lubuntu. I did a Google search just now for "pulseaudio lubuntu", which came up with interesting stuff, but not what I remembered using. I did see this one piece of information that seemed familiar: Re: No audio lubuntu 12.04 <hr size="1" align="center"> Be sure that pavucontrol, pulseaudio, pulseaudio-utils and libgtk-3-0 are all installed. Then play with the different settings in pulseaudio volume control and the controls in your player until you get sound. <a moz-do-not-send="true" href="http://douwil7.100webspace.net/linux/Tuning.html#17" target="_blank">http://douwil7.100webspace.net/linux/Tuning.html#17</a> That seems to be what I did, that finally got it working. I also had issues with having two soundcards on my machine, where sometimes they would initialize in the wrong order, and I would get no sound because it was using the soundcard with no amplifier/speakers hooked to it. - Aere On Tue, 2012-10-02 at 11:44 -0400, John Hupp wrote: <blockquote type="CITE"> So even though Pulseaudio is installed by default, apparently there are configuration questions viz-a-viz it's relationship with Alsa. Since Edubuntu's LTSP clients play local sound just fine, if you tossed me a few critical bones, I might be able to compare the Lubuntu vs. Edubuntu configurations and figure out what to change to get local sound working with Lubuntu LTSP. Of course, with LTSP, there might be the added question of whether I would need to change the LTSP chroot image -- but one step at a time! </blockquote> <blockquote type="CITE"> On 10/2/2012 11:30 AM, Aere Greenway wrote: </blockquote> <blockquote type="CITE"> <blockquote type="CITE"> All: I use Pulseaudio in Lubuntu all the time, because I need to test with Java Sound (specifically, its software synthesizer), which on Linux (at least in the Ubuntu variants), assumes Pulseaudio is used. It may be possible to make Java Sound use something else, but I don't know how to do it. So I (with some effort) configured my Lubuntu systems to use Pulseaudio. Unfortunately, I don't remember the steps to do that, but I believe I can figure it out again if it becomes necessary. - Aere On Tue, 2012-10-02 at 11:14 -0400, John Hupp wrote: <blockquote type="CITE"> A couple more notes: I find that Pulseaudio is indeed installed on Lubuntu Precise, so perhaps the previous post's "We don't use pulseaudio" remark refers merely to non-usage by Skype, rather than to fundamental configuration in Lubuntu? In Edubuntu 12.04, local sound works fine on LTSP clients. So Alsa and Pulseaudio are configured differently in Edubuntu/Ubuntu than in Lubuntu? On 9/29/2012 6:36 PM, John Hupp wrote: <blockquote type="CITE"> I'm forking a previous post to a related yet distinct topic. I hadn't posted anything on the topic yet since I have not tested my observation more widely, but I seem to find that LTSP clients connected to a Lubuntu LTSP server do not have local sound. They output to the server's speakers. Vaguely I recall that LTSP relies on pulseaudio, so your statement below could explain the behavior. If this assessment is correct, anyone know of a relatively easy way to get local sound working with LTSP on Lubuntu? On 9/29/2012 6:14 PM, <a moz-do-not-send="true" href="mailto:leszek.lesner@web.de" target="_blank">leszek.lesner@web.de</a> wrote: <blockquote type="CITE"> We don't use pulseaudio so pavucontrol makes no sense. Skype only used with alsa reveals the alsa devices in skypes configuration for audio devices. This works usually fine. -- Von meinem Nokia N9 gesendet 紳癒礁湖 (Rafael Laguna) schrieb am 29.09.12 23:54: Today I had to use Skype, and I noticed that there's no way to change the microphone volume. There's no GUI for doing that. So I googled and, at the Ubuntu forums recommended to use pavucontrol as a unique pulse audio controller. Shouldn't we include this app in the distro? I mean, maybe more people need to control more device's levels and they have no choice. Or maybe I'm wrong and I'm not using the right tool. Thanks. -- 紳癒礁湖 (Rafael Laguna) Lubuntu Artwork Team -- Lubuntu-users mailing list <a moz-do-not-send="true" href="mailto:Lubuntu-users@lists.ubuntu.com" target="_blank">Lubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a moz-do-not-send="true" href="https://lists.ubuntu.com/mailman/listinfo/lubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/lubuntu-users</a> </blockquote> </blockquote> </blockquote> <table width="100%" cellpadding="0" cellspacing="0"> <tbody> <tr> <td> <pre>-- Sincerely, Aere </pre> </td> </tr> </tbody> </table> </blockquote> </blockquote> <table width="100%" cellpadding="0" cellspacing="0"> <tbody> <tr> <td> <pre>-- Sincerely, Aere </pre> </td> </tr> </tbody> </table> </blockquote> </div> </div> </div> -- Lubuntu-users mailing list <a moz-do-not-send="true" href="mailto:Lubuntu-users@lists.ubuntu.com">Lubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a moz-do-not-send="true" href="https://lists.ubuntu.com/mailman/listinfo/lubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/lubuntu-users</a> </blockquote> </div> -- <div>jpxsat </div> <fieldset class="mimeAttachmentHeader"></fieldset> </blockquote> <fieldset class="mimeAttachmentHeader"></fieldset> </blockquote> </body> </html>