[Lubuntu] No pulseaudio explains no local sound on LTSP clients?
John Hupp
lubuntu at prpcompany.com
Wed Oct 3 15:00:05 UTC 2012
I haven't gotten very far into this problem yet, but I have found that
alsa and pulseaudio serve different functions. This link --
http://askubuntu.com/questions/169797/should-both-alsa-and-pulseaudio-be-installed
-- 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.
On 10/2/2012 10:33 PM, Jean-Pierre Vidal Piesset wrote:
> 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... ??? )
>
>
> 2012/10/2 John Hupp <lubuntu at prpcompany.com
> <mailto:lubuntu at prpcompany.com>>
>
> Thanks, that's a good starting point.
>
> On 10/2/2012 12:05 PM, Aere Greenway wrote:
>> 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*
>> ------------------------------------------------------------------------
>> 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.
>> http://douwil7.100webspace.net/linux/Tuning.html#17
>>
>> 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:
>>> 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!
>>>
>>> On 10/2/2012 11:30 AM, Aere Greenway wrote:
>>>
>>>> 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:
>>>>> 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:
>>>>>
>>>>>> 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, leszek.lesner at web.de
>>>>>> <mailto:leszek.lesner at web.de> wrote:
>>>>>>
>>>>>>> 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
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ???? (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.
>>>>>>>
>>>>>>> --
>>>>>>>
>>>>>>> ???? (Rafael Laguna)
>>>>>>> Lubuntu Artwork Team
>>>>>>>
>>>>>>> --
>>>>>>>
>>>>>>> Lubuntu-users mailing list
>>>>>>>
>>>>>>> Lubuntu-users at lists.ubuntu.com
>>>>>>> <mailto:Lubuntu-users at lists.ubuntu.com>
>>>>>>>
>>>>>>> Modify settings or unsubscribe at:
>>>>>>> https://lists.ubuntu.com/mailman/listinfo/lubuntu-users
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>> --
>>>>
>>>> Sincerely,
>>>> Aere
>>>>
>>>
>>
>> --
>>
>> Sincerely,
>> Aere
>>
>
>
> --
> Lubuntu-users mailing list
> Lubuntu-users at lists.ubuntu.com <mailto:Lubuntu-users at lists.ubuntu.com>
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/lubuntu-users
>
>
>
>
> --
> jpxsat
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/lubuntu-users/attachments/20121003/42464139/attachment.html>
More information about the Lubuntu-users
mailing list