64studio:/home/peter# cat /proc/asound/cards

*0 [M1010 * * * * *]: ICE1712 - M Audio Delta 1010

* * * * * * * * * * *M Audio Delta 1010 at 0xdc00, irq 185

*1 [I82801DBICH4 * ]: ICH4 - Intel 82801DB-ICH4

* * * * * * * * * * *Intel 82801DB-ICH4 with AD1981B at 0xfebff800, irq 209

*2 [M2x2 * * * * * ]: USB-Audio - MidiSport 2x2

* * * * * * * * * * *M-Audio MidiSport 2x2 at usb-0000:00:1d.0-2, full


1. Opened qjackctl >> Setup... >> Input & Output Channels to 0 (no option to

make it really "blank")

2. press start on qjackctl

3: read the following messages:

loading driver ..

apparent rate = 44100

creating alsa driver ... hw:0|hw:0|512|2|44100|4|2|hwmon|swmeter|-|32bit

control device hw:0

the playback device "hw:0" is already in use. Please stop the application

using it and run JACK again

4: Shutdown Iceweasel that successful played some flash media through the

M1010 before I tried Jack, press start again

5: Smile ! >> 12 input channels , 10 output channels , full M1010 heaven :-)



Thanks a lot for the advice !



Btw, Is there some sort of benchmark testing program I could run to see how

good/bad my system runs now ?

I'll start running some softsynths and test Rosegarden now but if there's

some standard test, I'd like to ad my results...



Anyway, thanks for showing me the sweet way into freedom again peeps ,

yoohoo !

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Hi Peter!

You might want to a look at http://www.linuxjournal.com/node/1000262 . ($cat /proc/interrupts?) Try having the m-audio "alone" in the best possible IRQ number, changing the slot if needed. Do you really need the onboard audio card? If not, disable it in the BIOS.

Not sure, but isn't the IRQ number of Peter's card a bit too high?
Mine is IRQ:14 here. I have noapic, nolapic and acpi=off at boot. I think this has improved my performance. I have a sub-3ms latency (as reported by Jack) with no x-runs when I run ardour with 2 VST instruments (using dssi-vst) connected through JACK. (I've got a m-audio audiophile 2496)


Maybe latency is not an issue for you, as you have the "hardware monitoring" option. For me a low latency is important because, as said, I use virtual instruments in real time.

Anyway, if you want to try to have a lower latency, first try decreasing the frames/period value down to a value you don't get x-runs, running jack on its own. Then start the audio apps and check again until you have a stable setup. Needless to say, enable the realtime opion.


Cheers

Pablo





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Pablo Fernandez wrote:
> I have noapic, nolapic and acpi=off at boot.

I wouldn't turn acpi off. Ok, anyhow power should be turned of manually
and not only by the acpi function but maybe also the fan speed is
controlled by acpi and other needful things.

Cheers,
Ralf

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On Wed, May 14, 2008 at 8:26 PM, Ralf Mardorf <ralf.mardorf@alice-dsl.net> wrote:

Pablo Fernandez wrote:

> I have noapic, nolapic and acpi=off at boot.



I wouldn't turn acpi off. Ok, anyhow power should be turned of manually

and not only by the acpi function but maybe also the fan speed is

controlled by acpi and other needful things.



Cheers,

Ralf



I wasn't sure anyway. I'll remove that option. Thanx for the tip.
Pablo


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Today I tested amSynth, ALSA Modular Synth, Rosegarden, Ardour, Hydrogen. With the Midisport 2x2 inputs for keyboards, and the Delta 1010 Midi inputs for playing Hydrogen with my Roland SPD-11 )

All worked fine, no xruns in Jack's messages and it sounds like there's very little to no latency (23.2 msec says Jack) .

Very nice for this Pentium4 2.400 Ghz 512MB RAM pc ... but I'll do some more testing to see if I get better results using less Frames/Buffer et cetera .
(I've never seen such high irq numbers before, I'll check it out also, and indeed, disable the onboard in the BIOS ...)


Thanks for the dssi-vst tip btw,
maybe a hint for getting SynthEdit to run with Wine ?
It starts up fine here, but as soon as the first bleep from the demo project comes out of the speakers, it crashes and goes down ...

Other users who tried to get it running reported the same behaviour , I'll stick with a dual boot for a while I guess ...

Well, I'll start learning Alsa Modular synth and other open source SynthEdit alternatives too of course ... LV2 or something ...


Greetings, and thanks again for replies ;-)
Peter

freqrush.oxyhost.com
www.freakrush.net
freqrush.blogspot.com



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Pablo Fernandez wrote:
>
>
> On Wed, May 14, 2008 at 8:26 PM, Ralf Mardorf
> <ralf.mardorf@alice-dsl.net <mailto:ralf.mardorf@alice-dsl.net>> wrote:
>
> Pablo Fernandez wrote:
> > I have noapic, nolapic and acpi=off at boot.
>
> I wouldn't turn acpi off. Ok, anyhow power should be turned of
> manually
> and not only by the acpi function but maybe also the fan speed is
> controlled by acpi and other needful things.
>
> Cheers,
> Ralf
>
> I wasn't sure anyway. I'll remove that option. Thanx for the tip.
> Pablo

Hi Pablo

I'm not sure if I'm right . I read about that if acpi is on, the
performance will slow down but I never noticed that. Maybe it is better
with slow CPUs to turn acpi off. I also don't know if things like the
fan speed are controlled by acpi. If it will be controlled by acpi and
acpi will be turned of, the fan always would run full speed. To turn
acpi of won't damage anything.

I just think it's better to turn acpi on.

My 64 Studio will be booted with acpi on:

title 64 Studio, kernel 2.6.21-1-multimedia-amd64
root (hd0,13)
kernel /boot/vmlinuz-2.6.21-1-multimedia-amd64 root=/dev/hda14 ro
vga=791 splash=silent
initrd /boot/initrd.img-2.6.21-1-multimedia-amd64
savedefault

Cheers,
Ralf

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

APIC is required I believe for SMP machines (2 or more cores or CPUs).
I generally run with it enabled as I have SMP (dual core) machines here.
~ I also use frequency scaling on the laptop so acpi is on for me by
default. When recording though I do lock the CPU frequency via the KDE
power applet (I run KDE on the laptop).

Generally there should be no need for anything other than the default
kernel options unless you are troubleshooting something. I used to use
those options on my laptop before the linux kernel had better support
for my laptop. A couple of bios upgrades helped as well, but this is
kinda OT now

Ralf Mardorf wrote:
| Pablo Fernandez wrote:
|>
|> On Wed, May 14, 2008 at 8:26 PM, Ralf Mardorf
|> <ralf.mardorf@alice-dsl.net <mailto:ralf.mardorf@alice-dsl.net>> wrote:
|>
|> Pablo Fernandez wrote:
|> > I have noapic, nolapic and acpi=off at boot.
|>
|> I wouldn't turn acpi off. Ok, anyhow power should be turned of
|> manually
|> and not only by the acpi function but maybe also the fan speed is
|> controlled by acpi and other needful things.
|>
|> Cheers,
|> Ralf
|>
|> I wasn't sure anyway. I'll remove that option. Thanx for the tip.
|> Pablo
|
| Hi Pablo
|
| I'm not sure if I'm right . I read about that if acpi is on, the
| performance will slow down but I never noticed that. Maybe it is better
| with slow CPUs to turn acpi off. I also don't know if things like the
| fan speed are controlled by acpi. If it will be controlled by acpi and
| acpi will be turned of, the fan always would run full speed. To turn
| acpi of won't damage anything.
|
| I just think it's better to turn acpi on.
|
| My 64 Studio will be booted with acpi on:
|
| title 64 Studio, kernel 2.6.21-1-multimedia-amd64
| root (hd0,13)
| kernel /boot/vmlinuz-2.6.21-1-multimedia-amd64 root=/dev/hda14 ro
| vga=791 splash=silent
| initrd /boot/initrd.img-2.6.21-1-multimedia-amd64
| savedefault
|
| Cheers,
| Ralf
|
|
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