Subject: Re: [linux-audio-user] maudio quattro & jack
From: Frank Barknecht (fbar_AT_footils.org)
Date: Sat Apr 10 2004 - 00:12:10 EEST
Hallo,
Tim Blechmann hat gesagt: // Tim Blechmann wrote:
> > I haven't tried it with latest jack and all the i/o options. If you
> > have the time it would be nice to hear how the latest code is working.
> > You should make sure you are using at least:
> >
> > latest 2.6.x
> ??? has the quattro/2.6 problem been fixed? i thought the usb subsystem
> rejects the quattro from not being compliant with the usb standard ...
You probably missed this, when I posted it, I guess, here:
Date: Tue, 16 Mar 2004 10:12:45 -0500 (EST)
From: Alan Stern <stern_AT_rowland.harvard.edu>
Cc: USB development list <linux-usb-devel_AT_lists.sourceforge.net>
Subject: Re: invalid alternate setting
Here's an announcement for people interested in using USB devices
with invalid configuration descriptors. I've completed a series
of patches that will make the system accept such devices, to the
extent that it can. You will have to apply all three patches in
sequence; each is a prerequisite for the next. They should go on
top of a 2.6.4 system. The patches are:
as221: http://marc.theaimsgroup.com/?l=linux-usb-devel&m=107937025411336&w=2
as222: http://marc.theaimsgroup.com/?l=linux-usb-devel&m=107937021027794&w=2
as223: http://marc.theaimsgroup.com/?l=linux-usb-devel&m=107937029404286&w=2
The first two patches just improve the error logging; you might
like to see what happens when you plug in your devices. The third
is the one that changes the kernel's behavior. Please let me know
if the patches don't work as expected.
Not all the USB drivers will work properly with that third patch
installed, so be warned. The USB audio class driver should be
okay. I have no idea what will happen with the ALSA USB
audio/MIDI driver; it hasn't been updated yet.
Alan Stern
I couldn't test this yet - my Quattro is collecting dust somewhere and
is waiting for Ebay.
Ciao
-- Frank Barknecht _ ______footils.org__
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