[alsa-devel] No sound from usb on Motorola C350 cellphone

Giovanni Maruzzelli gmaruzz.lists at gmail.com
Mon Nov 12 19:49:20 CET 2007


device string, and all the "usual" kind of detailed informations are
in the files contained by the compressed archive you can download at:
http://www.celliax.org/c350_usb_sound.tgz (lsusb -vv before and after,
stream0, etc etc).

maybe there is need for a quirk in snd_usb_audio ?

the problem is that the device appear to works, but do not captures or
plays samples.

On Nov 12, 2007 7:39 PM, John Utz <john.utz at dmx.com> wrote:
> Hi All;
> I think this is a totally fascinating thing and i hope it will be
> possible to make it work.....
> onto the specifics
> On Mon, 12 Nov 2007 19:14:06 +0500
> "Alexander E. Patrakov" <patrakov at gmail.com> wrote:
> > Giovanni Maruzzelli wrote:
> > > Needs more info, tests?
> >
> > If you can make the audio functionality work under Windows 2000 or XP
> > with the new (non-standard) driver, snoopy logs will be interesting.
> > Snoopy is available from http://www.wingmanteam.com/usbsnoopy/ or
> > (different version) http://sourceforge.net/projects/usbsnoop/
> >
> i am not staring at the USB code right now (it's on a different box),
> but i would think that one of the first things that you might need to
> uncover is the USB device string. It may be offered up as part of the
> device probe when it's attached (check in dmesg) or you may find it in
> a registry or .inf file on the windows file system after you install
> the drivers.
> if it's a class compliant device, then it may just work once alsa get's
> taught about it (dont hold me to that, i am not looking at code)
> however, as one of you alluded to, there may be an AT command that
> needs to get tickled to turn it on.
> the other annoying thing to consider is that it may actually be probe
> and connected, but you havent yet figured out how to turn up the
> volume :-( (yes, that happens)
> i'll be really curious about this, so please continue to share with
> the list....
> tnx!
> johnu

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