[alsa-devel] USB Quirks for Boss JS-8

Keith A. Milner maillist at superlative.org
Mon Apr 15 01:00:29 CEST 2013

On Tuesday 16 Oct 2012 09:47:28 Daniel Mack wrote:
> On 14.10.2012 21:43, Adolfo wrote:
> > I am not able to hear any sounds in my JS-8 connected to my Fedora 17,
> > 
> > The device is recognised by the system, but no sound can be played,
> > I've tried with jack too, but no luck,
> > Can you please tell me if jackd needs any special parameters in order to
> > run with JS-8?
> You might have hit a bug here that I introduced during a refactoring of
> the driver. Unfortunately, I can't reproduce that with any of the
> multiple USB audio devices I have at hand, but someone from the
> alsa-user ML offered me to send over his device that also show this
> problem, so I can have a look. Stay tuned please, and my apologies for
> the trouble.
> Meanwhile, you could check whether any of the kernels between 2.6.39 ->
> 3.4 works for you - they all have the quirk for the JS-8.

If it's any help, I'm running Linux Mint 13 with a 3.2.0-34 kernel and it's 
working for me. I do get the following in dmesg:

[47696.764621] usb 1-6.2: new high-speed USB device number 12 using ehci_hcd
[47696.858892] MIDIStreaming interface descriptor not found
[47696.859099] init_device failed: MIDI 4-0: seq-midi

This is due to an error in the original quirk I submitted which was brought to 
light when some changes were made to the USB driver. I will try to tidy it up 



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