Re: Some problems with two 1010LTs (pcm_multi & jackd)

["Petter Sundlöf" <petter.sundlof@findus.dhs.org>]

>>After this I tried to run jackd -d alsa -r44100 -p512 -C multi_capture 
>>-P multi_playback
>>
>>I then get this stdout message:
>>
>>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.
>>loading driver ..
>>creating alsa driver ... 
>>multi_playback|multi_capture|1024|2|48000|0|0|nomon|swmeter|-|32bit
>>configuring for 48000Hz, period = 1024 frames, buffer = 2 periods
>>nperiods = 2 for capture
>>nperiods = 2 for playback
> 
> 
> It's starting with the wrong sample rate and number of frames, but using
> the right devices. That's strange.
> You say you installed alsa-lib over an existing one. Are you sure you replaced
> it?

I pasted in a "later" jack command line, where I tried with 44k/512 
frames instead. So the stdout output doesn't match the command I 
actually used at that time.

> 
>>I then start Ardour and open a session. I place the playhead somewhere 
>>and try to start playback. Nothing happens. After a few seconds, Ardour 
>>is disconnected from JACK, and I receive this in jackd's stdout:
>>
>>ALSA: poll time out, polled for 17416024 usecs
> 
> 
> This is the error message I kept getting before I patched pcm_multi.c.
> 
> It might be worth removing alsa-lib and jack completely and
> recompiling/reinstalling.

That'd be a dependency nightmare on Fedora Core :/ alsa-lib is patched 
and installed, but I'll double double check it tomorrow (today's been 
too rough; had to evactuate rehearsal room and guitarist breaks his 
little finger).

> You won't be able to record for long like this. It will run for a while,
> as the clocks are pretty accurate, but they will drift and you'll get
> xruns and/or jackd will die.

Yeah. Since I don't have any external S/PDIF sources yet, I guess I'll 
have to wait until/if a solution for 1010LT cards has landed.

[snip...]
 >># S/PDIF second soundcard (playback)
 >>>  	bindings.18.slave b
 >>>  	bindings.18.channel 8
 >>>  	bindings.19.slave b
 >>>  	bindings.19.channel 9
 >
 >
 >One more thing - I'm not sure if the S/PDIFs are working yet on 1010LT.
 >Try commenting these sections out in .asoundrc.

Done, but no change.

I'll try making sure alsa-lib is patched alright.

Thanks for the help.


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