[LAU] RME HDSP Multiface Windows vs Linux & Jack

[Paul Davis]

On Tue, 2008-07-22 at 10:19 +0200, Svend-Erik Kjær Madsen wrote:
> Hi
> I've newly installed a desktop system with dual boot 
> windows/ubuntuStudio and discovered something exiting.
> 
> If I play around with ZynAddSubFX in Windows, I can adjust the card to 
> 64 frames 96000KHz and play with 1,5 ms latency without any kind of 
> sound glitch or interrupts at all.
> 
> If I try the same with UbuntuStudio and jack I get a lot of X-runs as I 
> play, in a serious situation it's no good, especially as I'm beginning 
> to use effects in and out of my Multiface in real time for example guitar.
> 
> Now that I discovered that my card is fully capable of playing with 
> extreme low latency I'm not quite satisfied with running 20ms or more in 
> UbuntuStudio or any other Linux DAW.
> 
> Is there anything I can do to tune my jack installation to obtain lower 
> latency and more stability with my card, so far I haven't had any luck 
> tweaking the jack settings.

Have you used google to research this at all? Do you use JACK in
RT-mode?