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Thread: Dual PCI sound cards with gladish?

  1. #1
    Join Date
    Nov 2008
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    7

    Angry Dual PCI sound cards with gladish?

    I am trying to run two Hoontech DSP 2000 (http://www.st-audio.de/products/dsp2000/info.html) PCI cards simultaneously on Ubuntu Studio 12.04.

    The cards work fine one at a time.

    I have made an .asoundrc file that combines the two cards into one virtual card, and am using an SPDIF cable to provide clock synchronization between the cards.

    This works when I use qjackctl to start up jack (it starts /usr/bin/jackd). It is not entirely stable though: ardour crashes at times etc., there's numerous (spurious?) xrun reports - no problem with the sound, but xruns are reported in abundance nonetheless.

    But if I use gladish to start my sound programs, gladish apparently starts /usr/bin/jackdbus instead.

    (is this something with jack1 vs jack2 or how do I know which one Ubuntu Studio uses?)

    Further, when it's gladish / jackdbus that is running, the contents of my .asoundrc seems to be completely ignored. No matter what try to write in the "input" and "output" sound device fields in gladish's jack configuration window - it only works if I write physical sound device names (hw0, hw1); writing the pseudo sound device named (multi_capture, multi_playback) does not work.

    Is using multiple sound cards supported in Ubuntu Studio? In gladish? Anyone doing it? Pointers to some recent documentation?

    Thanks in advance,
    /Jacob.

  2. #2
    Join Date
    Jun 2008
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    1,124
    Distro
    Ubuntu Studio

    Re: Dual PCI sound cards with gladish?

    12.04 uses JACK2 by default. You can switch to JACK1 if needed.
    You can always check which JACK package is installed.

  3. #3
    Join Date
    Dec 2006
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    1,540

    Re: Dual PCI sound cards with gladish?

    Quote Originally Posted by jalor@yousee.dk View Post
    I am trying to run two Hoontech DSP 2000 (http://www.st-audio.de/products/dsp2000/info.html) PCI cards simultaneously on Ubuntu Studio 12.04.
    try extrapolating this info:
    http://www.remastersys.com/forums/in...p?topic=1208.0

    http://www.remastersys.com/forums/index.php?board=20.0

    The forum boss there has used a pair of maudio delta pci cards,
    if you ask, or search around a bit, there should be info,
    some of which may help: define a master-slave, sync
    the clocks, etc
    Cheers

    www.bandshed.net/pdf/AV6Manual.pdf maybe some help in the manual.
    Last edited by sgx; October 29th, 2012 at 12:36 AM.

  4. #4
    Join Date
    Nov 2008
    Beans
    7

    Re: Dual PCI sound cards with gladish?

    Quote Originally Posted by sgx View Post
    try extrapolating this info:
    http://www.remastersys.com/forums/in...p?topic=1208.0

    http://www.remastersys.com/forums/index.php?board=20.0

    The forum boss there has used a pair of maudio delta pci cards,
    if you ask, or search around a bit, there should be info,
    some of which may help: define a master-slave, sync
    the clocks, etc
    Cheers

    www.bandshed.net/pdf/AV6Manual.pdf maybe some help in the manual.
    (how did this post end up in ubuntu_mobile? odd)

    Thanks for the links. They look like what I have been following (http://www.jrigg.co.uk/linuxaudio/ice1712multi.html and http://alsa.opensrc.org/TwoCardsAsOne)

    Checking, I'm using jackd2.

    Some more thorough experimentation show that: Jack uses the multi_capture/multi_playback device defined in /etc/asound.conf when I start jack with qjackctl and tells qjackctl NOT to use jackdbus.

    If qjackctl stats jack with jackdbus enabled, only one of the hadware cards is used.

    So the question really boils down to: Does jackdbus ignore /etc/asound.conf file or what is going on?
    Last edited by jalor@yousee.dk; November 1st, 2012 at 09:45 PM.

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