[K12OSN] sound advice K12LTSP with Windows Terminal Server 2003

Kevin Verheyen thepiano at telenet.be
Thu Feb 23 19:16:02 UTC 2006


You just made my day!
I was having big problems in getting sound to work locally when using  
rdesktop, and it seems that your esddsp idea will make my live a lot  
easier.

Keep up your good work, and I'll test the puppy out tomorrow !
Just needed this !

Kevin

On 23-feb-06, at 17:19, Gideon Romm wrote:

> David-
>
> I figured I would chime in with a few pointers on sound.  Also, since
> you contacted me, I conducted a quick experiment to make sure I  
> have my
> facts straight.
>
> Here goes.  First of all, let me preface this with the fact that  
> all of
> my experience is with esd - not nasd (as you use), so not all of the
> assertions below may apply in a nasd environment:
>
> 1. With esd, if you have several different screens set up on your
> terminal of ANY FLAVOR (ie, 1 W2k3 + 1 Linux, 2 Linux, 2 W2k3,  
> etc), you
> will only ever get sound on one screen in the current  
> configuration.  I
> am still unclear as to whether this is a limitation of esd itself (not
> being able to blend streams from two separate esd clients at the same
> time) or whether there is just some esd magic to allow it.  I have  
> tried
> adding the "-promiscuous" flag to /etc/rc.sound, but to no avail.
> Basically, if you have two screens set up to run esd clients, the  
> first
> one that you log into will win control of the sound daemon.
>
> 2. GOOD NEWS!  I ran "esddsp rdesktop -r sound:local <ip>" from my  
> Linux
> application server, and got the calming (?) welcome audio from  
> Windows.
> Even an mp3 played nicely.  This is a far cry from my previous
> experiences with ultra-slow audio, so either things have improved, or
> the network was cooperating when I ran my test.  So, thats an option.
>
> 3. If you are interested in hacking the rdesktop.wrapper script in the
> LTSP tree to run "esddsp rdesktop" instead of "rdesktop" be  
> forewarned:
> It appears the esd package was not compiled 100% correctly in the LBE,
> and it looks for libs in /usr/local/lib, rather than /usr/lib.  A  
> clever
> symlink of $LTSPROOT/usr/local to ../ clears that up.  But,  
> assertion #1
> still remains.  Perhaps a TODO for us developers is to clean up the
> ltsp-esd package and change the rdesktop wrapper to use esd if esd is
> the chosen sound daemon.
>
> Conclusion:
>
> In an esd world, to have one's cake and eat it too, running windows  
> from
> the linux server with "esddsp rdesktop" may be the best shot at it.
>
> In a nasd world, I'm not the one to ask ;)
>
> All the best,
>
> -Gadi
>
>
> On Fri, 2006-02-17 at 20:33 -0500, David Trask wrote:
>> Oh....one more thing...I'm using IceWM too.....(this sometimes  
>> makes a
>> difference)
>>
>> "Support list for opensource software in schools."  
>> <k12osn at redhat.com> on
>> Friday, February 17, 2006 at 8:31 PM +0000 wrote:
>>> I need some ideas.
>>>
>>> I have a K12LTSP network with a mix of terminals, but my lab and the
>>> library are all LTSP Term 150's from disklessworkstations.com.  My
>>> issue....getting sound to work well on the K12LTSP terminals from  
>>> within
>>> the Windows Terminal Server session.
>>>
>>> Background:  I have nasd enabled in lts.conf and in  
>>> Linux....everything
>>> works....Flash, MPlayer....games....everything.  If I type    
>>> rdesktop -f
>>> -a 16 -d vcsnet -r sound 10..0.7.253     and log in....I get
>>> sound....albeit very choppy and with considerable delay.
>>>
>>> Today I was off-site with my Ubuntu laptop and I figured "what the
>>> heck"....I tried to get sound working in an rdesktop session by  
>>> typing the
>>> command above with an external IP to access my server and lo' and  
>>> behold
>>> the sound worked great!  Now granted....we're talking local  
>>> install vs.
>>> terminal.....and we're also dealing with esd and possibly  
>>> gstreamer...etc.
>>> vs. nasd.
>>>
>>> Does anyone out there have sound from Windows Terminal services  
>>> working
>>> alright through their terminals....and if so....how'd you do it?
>>> Also....any advice on what I can try....I'm open to trying new  
>>> sound ideas
>>> so long as it'll work with Flash.
>>>
>>> David N. Trask
>>> Technology Teacher/Director
>>> Vassalboro Community School
>>> dtrask at vcsvikings.org
>>> (207)923-3100
>>>
>>>
>>> _______________________________________________
>>> K12OSN mailing list
>>> K12OSN at redhat.com
>>> https://www.redhat.com/mailman/listinfo/k12osn
>>> For more info see <http://www.k12os.org>
>>
>>
>>
>> David N. Trask
>> Technology Teacher/Director
>> Vassalboro Community School
>> dtrask at vcsvikings.org
>> (207)923-3100
>>
>>
>> _______________________________________________
>> K12OSN mailing list
>> K12OSN at redhat.com
>> https://www.redhat.com/mailman/listinfo/k12osn
>> For more info see <http://www.k12os.org>
>>
>>
>
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