I have a real need to use an external USB sound system to get 4 or 8
channels from my laptop.  Hardware is Edirol UA-101.  Thelaptop can use
it, at least from Audacity it plays stereo.  But in csound I cannot werite
to it -- aplay -l says

card 1: UA101 [UA-101], device 0: UA-101 [UA-101]
  Subdevices: 1/1
  Subdevice #0: sbdevice #0

I have tried portaudio but that says expression failed in
src/hostapi/alsa/pa_linux_alsa.c line 1300 followed by similar messages

Using -+rtaudio=alsa it says "UNABLE TO SET REQUESTED SAMPLE FORMAT ON
SOUNDCARD"  (sorry in lowercase) but does not help what is wrong

I thought of using jack, but I have never used it and am not sure where to
start.  I ran qjackctl but no idea what to do next -- no output devices
shown that I can see; think it says it cannot start jackd

==John ff



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what are your csound options?

On 15 Jun 2011, at 18:25, jpff@cs.bath.ac.uk wrote:

> I have a real need to use an external USB sound system to get 4 or 8
> channels from my laptop.  Hardware is Edirol UA-101.  Thelaptop can  
> use
> it, at least from Audacity it plays stereo.  But in csound I cannot  
> werite
> to it -- aplay -l says
>
> card 1: UA101 [UA-101], device 0: UA-101 [UA-101]
>  Subdevices: 1/1
>  Subdevice #0: sbdevice #0
>
> I have tried portaudio but that says expression failed in
> src/hostapi/alsa/pa_linux_alsa.c line 1300 followed by similar  
> messages
>
> Using -+rtaudio=alsa it says "UNABLE TO SET REQUESTED SAMPLE FORMAT ON
> SOUNDCARD"  (sorry in lowercase) but does not help what is wrong
>
> I thought of using jack, but I have never used it and am not sure  
> where to
> start.  I ran qjackctl but no idea what to do next -- no output  
> devices
> shown that I can see; think it says it cannot start jackd
>
> ==John ff
>
>
>
> Send bugs reports to the Sourceforge bug tracker
>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body  
> "unsubscribe csound"
>

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie





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> Turn the gadget down to its dumbest level, i.e. turn off "advanced mode"
> and
> use sample rate of 48000 Hz. Then reboot everything. If that doesn't work
> there may be a bug in the Ubuntu audio code.
>
> I think that Jack would have the same problems.
>


Thanks -- Seems to run with poprtaudio now -- not totaly sure which action
fixed it.

At least it is giving stereo -- quad test next

==John

PS Linux != Ubuntu; this is OpenSuSE11.4 without KDE or Gnome



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