[Ardour-Users] Ardour hangs on Export - Jack Error

[Ralf Mardorf]

On Wed, 2011-06-22 at 22:18 +0200, Joerg Sorge wrote:
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> > Are there xruns on both machines? What kernel do you use for your 64-bit
> > install?
> 
> No, only when I "switch" back to jack 1
> 
> > You can run jackd in rt mode, using a generic kernel, but it might be
> > better to use a kernel RT or at least a preempt kernel to avoid xruns.
> > What sound card do you use?
> 
> M-Audio Delta 1010
> ESI Juli@
> OnBoard-Sound
> 
> on all machines the same error...with jack2
> 
> With jack2, I have no Problems on working with Ardour, only Export hangs.
> 
> 
> 
> - -- 
> www.xpilger.de <<<<<<<<<<<<<<
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I guess this isn't a PM (not marked as off-list), hence I reply to the
list too.
So you've got two issues, one regarding to real-time and another
regarding to freewheeling mode aka faster than real-time?

For my Terratec Envy24 cards JACK1 doesn't work, only JACK2 does, I
didn't test JACK1 with my RME card until now. I don't claim anything
else about JACK1 and 2, but that there are issues for my Envy24 cards
too, when I use JACK1 on my current machine for real-time.

Perhaps you can use Jack2 + the hints Jörn gave, to fit too your needs?

        -------- Forwarded Message --------
        From: Jörn Nettingsmeier <nettings at stackingdwarves.net>
        To: ardour-users at lists.ardour.org
        Subject: Re: [Ardour-Users] Ardour hangs on Export - Jack Error
        Date: Wed, 22 Jun 2011 12:28:28 +0200
        
        On 06/22/2011 11:03 AM, Ralf Mardorf wrote:
        > On Tue, 2011-06-21 at 15:10 +0200, Joerg Sorge wrote:
        >> Dist: 11.04/32bit /also on 64bit
        >> Kernel: 2.6.38-8-generic-pae/
        >> Alsa: 1.0.23
        >> jamin: 0.97.14
        >> Ardour: 2.8.11/7387
        >> jackdmp version 1.9.7 tmpdir /dev/shm protocol 8
        >
        >> but the system is not so "smoove" (many xruns)
        >> and can at one machine not be run in RT.
        
        joerg, just a shot in the dark: are you runnning jconvolver? it
        is known 
        to barf in freewheeling mode, for some people, under some
        conditions.
        
        in any case, as a temporary workaround, you could use
        timemachine to 
        record your session in real time, or alternatively bounce to
        another 
        ardour stereo track and then convert those files to your desired
        target 
        format on the command line (sox -M or "merge" is your friend).
        
        > You can run jackd in rt mode, using a generic kernel, but it
        might be
        > better to use a kernel RT or at least a preempt kernel to
        avoid xruns.
        > What sound card do you use?
        
        ralf, these guys are talking about export, which runs in
        freewheeling 
        mode. there are no xruns in freewheeling mode. stop spreading
        confusion.
        
        -- 
        Jörn Nettingsmeier
        Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
        
        Meister für Veranstaltungstechnik (Bühne/Studio)
        Tonmeister (VDT)
        
        http://stackingdwarves.net
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