28 Jan
2008
28 Jan
'08
12:34 a.m.
I hope someone can help me with this.
I have:
Athlon64 Dual-Core 6000+
2GB DDR3 RAM, running dual-channel
3 x SATA hard disks
Emu 1212m sound card
Ubuntu Studio 7.10 (Gutsy, I think)
Trying to run JACK at 44.1khz, at a 128 sample buffer I'm getting on the
order of 50-60 xruns a second. Even at a 4096 sample buffer, I was
getting one xrun every 2 seconds. I would think this setup should be
able to handle a 64 sample buffer without any trouble.
The one caveat is I did have to compile the latest stable ALSA from
scratch, so that my sound card would work. Could it be related to the
still-beta driver for my Emu card? Or maybe I need to recompile ALSA
with some options?
Thank you for any help.
-- Darren Landrum
28 Jan
28 Jan
7:42 p.m.
Darren Landrum wrote:
I hope someone can help me with this.
I have:
Athlon64 Dual-Core 6000+
2GB DDR3 RAM, running dual-channel
3 x SATA hard disks
Emu 1212m sound card
Ubuntu Studio 7.10 (Gutsy, I think)
Trying to run JACK at 44.1khz, at a 128 sample buffer I'm getting on the
order of 50-60 xruns a second. Even at a 4096 sample buffer, I was
getting one xrun every 2 seconds. I would think this setup should be
able to handle a 64 sample buffer without any trouble.
The one caveat is I did have to compile the latest stable ALSA from
scratch, so that my sound card would work. Could it be related to the
still-beta driver for my Emu card? Or maybe I need to recompile ALSA
with some options?
Thank you for any help.
I talked to my programming prof about this, and he thinks the fact that
I'm using a 64-bit OS might have a lot to do with it. I'll try
installing the 32-bit version of Ubuntu Studio at some point this week
and see if that changes anything (I keep all of my data on a separate
partition, so it's not a huge operation for me).
-- Darren
29 Jan
29 Jan
8:38 a.m.
Dne Monday 28 of January 2008 05:34:40 Darren Landrum napsal(a):
Trying to run JACK at 44.1khz, at a 128 sample buffer
I'm getting on the
order of 50-60 xruns a second. Even at a 4096 sample buffer, I was
getting one xrun every 2 seconds. I would think this setup should be
able to handle a 64 sample buffer without any trouble.
What devices do you use for capture and playback? The most suitable setup for
jack is hw:0,2 for capture and hw:0,0 for playback. Also make sure that your
samplerate in jack matches actual samplerate (see alsamixer).
The one caveat is I did have to compile the latest
stable ALSA from
scratch, so that my sound card would work. Could it be related to the
still-beta driver for my Emu card? Or maybe I need to recompile ALSA
with some options?
Any recent alsa (1.0.15 and up) should work well. I have had 1212m nad now I
have 1616m cardbus. Apart from missing 24bit playback, higher samplerates and
some bells and whistles, these cards work pretty well with alsa.
---
Ctirad
11:56 a.m.
Ctirad Fertr wrote:
What devices do you use for capture and playback? The
most suitable setup for
jack is hw:0,2 for capture and hw:0,0 for playback. Also make sure that your
samplerate in jack matches actual samplerate (see alsamixer).
That's how I currently have mine set up as well, and all sample rates
match. It works, so far.
Any recent alsa (1.0.15 and up) should work well. I
have had 1212m nad now I
have 1616m cardbus. Apart from missing 24bit playback, higher samplerates and
some bells and whistles, these cards work pretty well with alsa.
Yeah, 24-bit playback is the only thing left that I want.
--Darren
5941
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Darren Landrum