Cannot export in ardour 3.5

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Alexis73
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Hi,
I just installed Ardour 3.5 a few hours ago in Ubuntu studio 12.04. I recorded a track, exported it and it went fine.
Then I had to figure out how to mount an sd card (which is another issue in ubuntu) so that I could export directly to it. Apparently, after I did this, ardour can't export anymore. It just stays stuck on "exporting timespan 1 of 1". A file is created in the folder (on the harddisk) but it doesn't get bigger than a few bytes.

What could be the problem here?

LeatusPenguin
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Joined: 2010-12-16
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It can't export at all or it just can't export to the SD card? Have you by any chance enabled an alsa to jack programme since? I understand that some of these can cause issues for exporting from Ardour in which case disabling it should resolve the issue.

Alexis73
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I can 't export at all.

I use jack with an alsa driver in the settings of qjackctl. Do you mean that I have to switch to another audio driver?

paul
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These problems are generally believed to be caused by the version of JACK that you have installed on your system OR (in a few cases) by the presence of plugins that use multiple threads and are not compatible with faster-than-realtime processing. There are not very many such plugins, so I would guess that it is probably the version of JACK.

veda_sticks
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alsa jack bridge has caused problems in the past in kx studio but that seems to be fixed now. if you have the alsa bridge running try stopping it.

Alexis73
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I didn't install extra plugins, so I would exclude that possibility.
What do you mean by the version of jack? The difference between jackd, jackd1 or jackd2?

It appears that when I try to export a certain range. The playhead goes up to the first range-marker and then everything stops.

paul
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Alexis73: the problem is known to affect most versions of Jack2 until very recently. The problem may still, in fact, be present in Jack2.