Re: [LAD] MIDI jitter - was: automation on Linux (modular approach)

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To: David Olofson <david@...>
Cc: <linux-audio-dev@...>
Date: Thursday, March 25, 2010 - 2:42 pm

David Olofson wrote:

My audio sessions start like this:

#!/bin/sh
# sh start-session

[snip]

### CPU ferquency scaling
echo "\nSetting up CPU frequency scaling for 64 Studio 3.0-beta3"
cpufreq-selector -g performance
if [ $? = 0 ] ; then echo "Done" ; fi

[snip]

I'm not sure if I have disabled any power management by the BIOS, but I
guess I did.

> Are you using fbdev (VESA graphics) or similar, or are you using the

Might be a hint?! I've no time to search the web now, I'll do it tonight
or tomorrow. I don't know what "fbdev" and ""hardware" text mode
consoleI" does mean. I tested the VESA driver and the non-propritary ATI
driver. There was no audible difference.

> The latter can cause trouble with some

I didn't test the swissonic USB MIDI interface with another mobo that's
"known working". A big problem is, that the people I know don't use
Linux, or they do use Linux and do have issues too using external
hardware, but having the advantage that they don't need external synth,
but just soft synth.

> Also, are there any other USB devices connected to the same hub?

The MIDI interface is the only device using USB, resp. sometimes, when
not making music, I'm using an USB stick.
Rui told me to make the used USB slot head of the USB slots by editing
rtirq. This didn't change anything.

> (Integrated

IIRC no, but perhaps I don't remember correctly or I didn't check it
correctly.

I won't add a complete hwinfo or anything else now. Perhaps you are able
to tell me how I should check used IRQs.

Thank you for your "support",
Ralf
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Messages in current thread:
Re: [LAD] automation on Linux (modular approach), Ralf Mardorf, (Wed Mar 24, 10:07 am)
Re: [LAD] MIDI jitter - was: automation on Linux (modular ap..., Ralf Mardorf, (Thu Mar 25, 2:42 pm)
Re: [LAD] automation on Linux (modular approach), Tim E. Real, (Wed Mar 24, 10:52 pm)
Re: [LAD] automation on Linux (modular approach), Paul Davis, (Wed Mar 24, 10:45 pm)
Re: [LAD] automation on Linux (modular approach), David Olofson, (Wed Mar 24, 1:24 pm)
Re: [LAD] automation on Linux (modular approach), Ralf Mardorf, (Wed Mar 24, 4:52 pm)
Re: [LAD] automation on Linux (modular approach), Louigi Verona, (Wed Mar 24, 10:45 am)
Re: [LAD] automation on Linux (modular approach), Dave Phillips, (Wed Mar 24, 11:01 am)
Re: [LAD] automation on Linux (modular approach), Ralf Mardorf, (Wed Mar 24, 4:28 pm)
Re: [LAD] automation on Linux (modular approach), Paul Davis, (Wed Mar 24, 10:58 am)
Re: [LAD] automation on Linux (modular approach), Louigi Verona, (Wed Mar 24, 11:01 am)
Re: [LAD] automation on Linux (modular approach), Nick Copeland, (Wed Mar 24, 11:50 am)
Re: [LAD] automation on Linux (modular approach), Rui Nuno Capela, (Wed Mar 24, 11:26 am)
Re: [LAD] automation on Linux (modular approach), Louigi Verona, (Wed Mar 24, 11:29 am)
Re: [LAD] automation on Linux (modular approach), Dave Phillips, (Wed Mar 24, 11:08 am)
Re: [LAD] automation on Linux (modular approach), Nick Copeland, (Wed Mar 24, 10:57 am)
Re: [LAD] automation on Linux (modular approach), Ralf Mardorf, (Wed Mar 24, 4:24 pm)
Re: [LAD] automation on Linux (modular approach), Nick Copeland, (Wed Mar 24, 5:43 pm)
Re: [LAD] automation on Linux (modular approach), Ralf Mardorf, (Wed Mar 24, 6:00 pm)