[LAU] HDSP with jack 32 periods

Ralf Mardorf ralf.mardorf at rocketmail.com
Mon Jan 27 22:07:35 UTC 2014


On Mon, 2014-01-27 at 21:34 +0100, Peter P. wrote:
> did anyone have success using jackd with the RME HDSP card and
> settings
> 
> jackd -dalsa -r44100 -p32 -n2 -D -Chw:DSP -Phw:DSP -i18 -o18

Yesno, the HDSPe AIO theoretically can go that low, but in reality the
card on Linux is a PITA. IOW I can start jackd with such a low latency,
but I even get xruns at highest latencies.

[rocketmouse at archlinux ~]$ jackd -dalsa -r44100 -p32 -n2
jackd 0.123.0
Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn
and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details

JACK compiled with System V SHM support.
loading driver ..
apparent rate = 44100
creating alsa driver ... hw:0|hw:0|32|2|44100|0|0|nomon|swmeter|-|32bit
configuring for 44100Hz, period = 32 frames (0.7 ms), buffer = 2 periods
ALSA: final selected sample format for capture: 32bit integer
little-endian
ALSA: use 512 periods for capture
ALSA: final selected sample format for playback: 32bit integer
little-endian
ALSA: use 512 periods for playback
^Cjack main caught signal 2
no message buffer overruns
[rocketmouse at archlinux ~]$ hdspmixer 

HDSPMixer 1.11 - Copyright (C) 2003 Thomas Charbonnel
<thomas at undata.org>
This program comes with ABSOLUTELY NO WARRANTY
HDSPMixer is free software, see the file COPYING for details

Looking for RME cards:
Card 0: RME AIO S/N 0x579bcc at 0xfddf0000, irq 18



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