Subject: Re: [linux-audio-dev] Re: rosegarden, alsa_seq and usx2y rawusb
From: Rui Nuno Capela (rncbc_AT_rncbc.org)
Date: Mon Dec 13 2004 - 22:05:54 EET
Stefan Turner wrote:
> Since this has been mentioned, my US-122 doesn't work
> AT ALL using usx2y, but is fine with alsa. I am using
> qjackctl 0.2.13 and Jack 0.99.0 (the most recent
> versions AFAIK). All I get is:
>
> 17:47:12.866 JACK is starting...
> 17:47:12.867 /usr/bin/jackstart -R -dusx2y -dhw:1
> -r44100 -p512 -n3 -H -M
> 17:47:12.873 JACK was started with PID=6369 (0x18e1).
> back from read, ret = 1 errno == Success
> jackd: unknown driver 'usx2y'
> 17:47:12.885 JACK was stopped with exit status=1.
> 17:47:14.885 Could not connect to JACK server as
> client.
>
> This doesn't bother me, unless there are meant to be
> advantages of using usx2y?
>
Try using -p128 -n2, and tell us whether you can't notice any aural
difference, let alone if you can ignore a XRUN storm =:)
You need both the specific 'usx2y' backend driver patched into jackd,
*and* the new hwdep pcm (aka "rawusb") interface available on the
sand-usb-usx2y alsa kernel module. As Uwe did, you can look under
http://www.rncbc.org/usx2y/ for what fits you and try this out.
Cheers.
-- rncbc aka Rui Nuno Capela rncbc_AT_rncbc.org
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