[linux-audio-user] 2x RME Multifaces, ALSA, JACK & Ardour -> XRUNS?

[Frank smith]

Hi Edwin
Give Fervent software.com a look:

http://www.ferventsoftware.com

I got a disk from them and you can run from the CD to check stuff out.
I then installed it to the HD and it's been running ever since.
I recorded the song below using it ( Ardour - jammin)

At least you may get some help from Chris
seems quick on the mails as support.

Cheers
Bob










Edwin Peer wrote:

>On Friday 08 July 2005 16:20, Frank smith wrote:
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>>I use 16 tracks on 2 adats into the PC running Fervent Software.
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>What is Fervent?
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>>You may be able to borrow a Fervent CD and try this and see if you still
>>get the xruns.
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>
>That sounds like a great idea, I've even been tempted to install Windows on 
>the box just to see if the Windows software can handle the hardware 
>configuration. But that's not an ideal solution - since I would have to trash 
>the existing data on the machine to do it.
>
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>>I was under the impression that the RME multi's were fully supported in
>>Linux.
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>They are. I think. Using only one of the two cards works fine.
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>>Have you insured you have the RME drivers installed and loaded?
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>I think so. HDSPConf see's both of them. I can also capture from both. The 
>only problem is the XRUNs.
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>>Are you running 64bit?
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>Yes, is that a problem?
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>>Your systems seems more than adequate for recording to Ardour.
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>I thought so too, but I'm really struggling with this. :(
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>I've been doing some further investigating...
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>I gather there are two places where XRUNs happen:
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>1) ALSA <--> JACK
>2) JACK <--> JACK client
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>>From what I've been seeing when I play with the IRQ, JACK and qjackctl 
>priorites with chrt and the realtime-preempt kernel, I can cause the first 
>type by making the IRQ priority lower than JACK. jackd -v logs this as an 
>alsa XRUN. The second type is the problem I'm experiencing. Nothing shows in 
>the jackd -v output, but the client (qjackctl) sees XRUNs - usually a hundred 
>or so of them every few seconds.
>
>:espeer:
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>

-- 
F R Smith
Technical Admin

http://www.Rokpacardiff.com