30 Jan
2006
30 Jan
'06
10:08 a.m.
Has anyone managed to successfully get jackd talking to dmix?
My dmix setup works fix (i run VoIP stuff, artsd, and other assorted junk
through it daily).
jackd works great when connect to hw:0,0 or to plughw:0,0 (with the warning),
but if I point it at my dmix'd "default" it sits there with 100% CPU usage,
and doesn't otherwise operate.
Does anyone have this combination of jack and dmix working?
(i'm running alsa 1.0.11rc3 on 2.6.15.1, i've tried alsa 1.0.10 and jack
0.100.0 too)
jackd -v -d alsa -d default -r 48000 -S -n 8 -p 1024 -P
jackd 0.100.7
Copyright 2001-2005 Paul Davis 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.
server `default' registered
loading driver ..
registered builtin port type 32 bit float mono audio
new client: alsa_pcm, id = 1 type 1 @ 0x8056a48 fd = -1
apparent rate = 48000
creating alsa driver ... default|-|1024|8|48000|0|0|nomon|swmeter|-|16bit
configuring for 48000Hz, period = 1024 frames, buffer = 8 periods
You appear to be using the ALSA software "plug" layer, probably
a result of using the "default" ALSA device. This is less
efficient than it could be. Consider using a hardware device
instead rather than using the plug layer. Usually the name of the
hardware device that corresponds to the first soun
nperiods = 8 for playback
new buffer size 1024
registered port alsa_pcm:playback_1, offset = 0
registered port alsa_pcm:playback_2, offset = 0
++ jack_rechain_graph():
client alsa_pcm: internal client, execution_order=0.
-- jack_rechain_graph()
7129 waiting for signals
load = 1.1672 max usecs: 498.000, spare = 20835.000
load = 1.3102 max usecs: 310.000, spare = 21023.000
load = 1.3793 max usecs: 309.000, spare = 21024.000
load = 1.4162 max usecs: 310.000, spare = 21023.000
....
etc
....
30 Jan
30 Jan
4:05 p.m.
voidcreature(a)paradise.net.nz wrote:
Has anyone managed to successfully get jackd talking
to dmix?
My dmix setup works fix (i run VoIP stuff, artsd, and other assorted junk
through it daily).
jackd works great when connect to hw:0,0 or to plughw:0,0 (with the warning),
but if I point it at my dmix'd "default" it sits there with 100% CPU
usage,
and doesn't otherwise operate.
Does anyone have this combination of jack and dmix working?
It is due to the fact that the alsa programming in jackd has been
implemented wrongly. The poll revents are not handled correctly.
This results is OK operation when using hw:0,0, but likely to fail for
more exotic alsa configurations like dmix.
James
4:10 p.m.
On Mon, 2006-01-30 at 20:05 +0000, James Courtier-Dutton wrote:
voidcreature(a)paradise.net.nz wrote:
Does this also explain why JACK does not work with the ALSA PCM multi
plugin, unless ALSA is patched?
Lee
Has anyone managed to successfully get jackd
talking to dmix?
My dmix setup works fix (i run VoIP stuff, artsd, and other assorted junk
through it daily).
jackd works great when connect to hw:0,0 or to plughw:0,0 (with the warning),
but if I point it at my dmix'd "default" it sits there with 100% CPU
usage,
and doesn't otherwise operate.
Does anyone have this combination of jack and dmix working?
It is due to the fact that the alsa programming in jackd has been
implemented wrongly. The poll revents are not handled correctly.
This results is OK operation when using hw:0,0, but likely to fail for
more exotic alsa configurations like dmix.
4:11 p.m.
On Mon, 2006-01-30 at 20:05 +0000, James Courtier-Dutton wrote:
It is due to the fact that the alsa programming in
jackd has been
implemented wrongly. The poll revents are not handled correctly.
This results is OK operation when using hw:0,0, but likely to fail for
more exotic alsa configurations like dmix.
MUSTFIX for JACK 1.0?
4:13 p.m.
On Mon, 2006-01-30 at 20:05 +0000, James Courtier-Dutton wrote:
voidcreature(a)paradise.net.nz wrote:
i will happily take a patch for this. or is it just the MMAP_COMPLEX
patch and nothing more?
--p
Has anyone managed to successfully get jackd
talking to dmix?
My dmix setup works fix (i run VoIP stuff, artsd, and other assorted junk
through it daily).
jackd works great when connect to hw:0,0 or to plughw:0,0 (with the warning),
but if I point it at my dmix'd "default" it sits there with 100% CPU
usage,
and doesn't otherwise operate.
Does anyone have this combination of jack and dmix working?
It is due to the fact that the alsa programming in jackd has been
implemented wrongly. The poll revents are not handled correctly.
This results is OK operation when using hw:0,0, but likely to fail for
more exotic alsa configurations like dmix.
4:27 p.m.
On Mon, 2006-01-30 at 15:14 -0500, Paul Davis wrote:
On Mon, 2006-01-30 at 20:05 +0000, James
Courtier-Dutton wrote:
No, this is a separate issue (ALSA still must be patched to work with
JACK + MMAP_COMPLEX). The ALSA developers won't take the patch, they
say it's actually JACK that's wrong, but I haven't seen a patch, nor do
I know exactly what the problem is.
Lee
voidcreature(a)paradise.net.nz wrote:
i will happily take a patch for this. or is it just the MMAP_COMPLEX
patch and nothing more? Has anyone managed to successfully get jackd
talking to dmix?
My dmix setup works fix (i run VoIP stuff, artsd, and other assorted junk
through it daily).
jackd works great when connect to hw:0,0 or to plughw:0,0 (with the warning),
but if I point it at my dmix'd "default" it sits there with 100% CPU
usage,
and doesn't otherwise operate.
Does anyone have this combination of jack and dmix working?
It is due to the fact that the alsa programming in jackd has been
implemented wrongly. The poll revents are not handled correctly.
This results is OK operation when using hw:0,0, but likely to fail for
more exotic alsa configurations like dmix.
5:05 p.m.
Paul Davis wrote:
On Mon, 2006-01-30 at 20:05 +0000, James
Courtier-Dutton wrote:
Paul,
If I get a moment, I will try to get a patch together for jackd this
weekend. It is just a matter of adding a few lines of code, so hopefully
won't take long.
If you want to make a head start, you need to add
snd_pcm_poll_descriptors_revents() calls.
I attach some GPL code from another project that should illustrate the
method to use.
James
voidcreature(a)paradise.net.nz wrote:
i will happily take a patch for this. or is it just the MMAP_COMPLEX
patch and nothing more?
--p
Has anyone managed to successfully get jackd
talking to dmix?
My dmix setup works fix (i run VoIP stuff, artsd, and other assorted junk
through it daily).
jackd works great when connect to hw:0,0 or to plughw:0,0 (with the warning),
but if I point it at my dmix'd "default" it sits there with 100% CPU
usage,
and doesn't otherwise operate.
Does anyone have this combination of jack and dmix working?
It is due to the fact that the alsa programming in jackd has been
implemented wrongly. The poll revents are not handled correctly.
This results is OK operation when using hw:0,0, but likely to fail for
more exotic alsa configurations like dmix. 
5:02 p.m.
On Mon, Jan 30, 2006 at 08:05:42PM +0000, James Courtier-Dutton wrote:
It is due to the fact that the alsa programming in
jackd has been
implemented wrongly. The poll revents are not handled correctly.
This results is OK operation when using hw:0,0, but likely to fail for
more exotic alsa configurations like dmix.
Could you explain this in a bit more detail ?
--
FA
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linux-audio-dev@lists.linuxaudio.org
7 comments
5 participants
participants (5)
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fons adriaensen -
James Courtier-Dutton -
Lee Revell -
Paul Davis -
voidcreature＠paradise.net.nz