julien wrote:It works fine on stock kernel, 12.04 included -- the issue was specific to "rt" kernels , and should be fixed by the just-released version 4.0.2
This may be unfair, perhaps I shouldn't expect it to work.
I just downloaded a copy of Ubuntu 12.04 Studio, which supposedly has all the interesting audio and video packages installed and set up; Ardour, QJackctl, etc., it is built on a real time (they call it "low latency") kernel.
Only down side is that it is a 1.9Gig download.
Now the tricky part;
I tend to check things out initially on virtual machines, under VirtualBox.
Jack throws a fault initially, but when the trial version of PTQ4 is started it does receive midi messages from my keyboard and they sound.
I suspect that this is just because it is already running.
The latency is TERRIBLE and even I can get 4 or 5 notes ahead of the sound when playing scales :-D
The trail version wouldn't load the pre-sets that I had downloaded from FXP corner either, I got messages about not having the basic piano models for which they were created - I think it meant that I can't load V3 pre-sets for particular V3 instruments onto/into different V4 instruments.
So, Virtual Machines are probably OUT for any sort of live playing, though I may keep one for experimenting and playing midi files.
In any case it doesn't make much sense to strive for low latency in a real time virtual machine that is running in/under a non-real-time O/S (Windoze).
Comp Sci 101; You can run non-real-time processes under real time supervision, you can't expect to run real time processes under non-real-time supervision.
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In a separately built UBUNTU Studio 12.04 the latency is perfectly acceptable (for MY speed and complexity of playing).
Enough of the trial version, I have been tracking my FedEx shipment of the close out deal on V3.
It was within 10 miles (16 Km) an hour ago; in the next 10 hours it will circle around the neighborhood and I will probably get it by 6 p.m. I might get to bed before day break.
Next step; I only have a single foot pedal to my (now very old) KX88 and it is very much a SWITCH (on/off) damper pedal.
The GPP 3 pedal unit is out of production, so I am searching for a 3 pedal unit that transmits as continuous controllers.
Hmmm, are una corda and sostenuto "continuous" or binary on/off on physical pianos ?
I have never had to think about this before.
I will probably have to get a USB unit and route something through something else's "MID THRU".
Then I can revert to pre-set bunny role and just PLAY.
I just hope the registration and download server at Modartt stays up tonight :-D
