[alsa-devel] trying to get an eleven rack to work

[David Alexander]

---------- Forwarded message ----------
From: "David Alexander" <lidxv0n at gmail.com>
Date: Mar 27, 2012 10:45 PM
Subject: Re: [alsa-devel] trying to get an eleven rack to work
To: "Clemens Ladisch" <clemens at ladisch.de>

Grant & Clemens,

Sorry for the delay in getting the dev box set up.   Here are the
errors listed from the
syslog with the suggested additions to quirks-table.h implemented:


kernel: [   74.128035] usb 2-4: new high speed USB device number 2
using ehci_hcd
mtp-probe: checking bus 2, device 2:
"/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4"
mtp-probe: bus: 2, device: 2 was not an MTP device

kernel: [   74.634592] ALSA mixer.c:1938 usbaudio: unit 32: unexpected type
0x09
kernel: [   74.634606] snd-usb-audio: probe of 2-4:1.0 failed with error -5
kernel: [   74.635228] ALSA mixer.c:1938 usbaudio: unit 32: unexpected type
0x09
kernel: [   74.635246] snd-usb-audio: probe of 2-4:1.1 failed with error -5
kernel: [   74.635717] ALSA mixer.c:1938 usbaudio: unit 32: unexpected type
0x09
kernel: [   74.635732] snd-usb-audio: probe of 2-4:1.2 failed with error -5
kernel: [   74.636515] ALSA mixer.c:1938 usbaudio: unit 32: unexpected type
0x09
kernel: [   74.636529] snd-usb-audio: probe of 2-4:1.3 failed with error -5
kernel: [   74.636973] ALSA mixer.c:1938 usbaudio: unit 32: unexpected type
0x09
kernel: [   74.636986] snd-usb-audio: probe of 2-4:1.4 failed with error -5
kernel: [   74.637027] usbcore: registered new interface driver
snd-usb-audio


Thank you,
David



On Tue, Mar 27, 2012 at 4:57 AM, Clemens Ladisch <clemens at ladisch.de> wrote:
> Grant Diffey wrote:
>> my guess at the interface purposes from David's post are:
>>
>> Interface 1 is really custom (perhaps some sort of custom
control/management thing tho I would of thought they'd use midi sysex for
that)
>
> It's an audio control interface, just marked as vendor-specific.
>
>> Interface 3 looks like maybe a usb mixer without a descriptor? but
that's a guess.
>
> Interface 3 is audio output.
>
>> Interface 4 is potentially usb2 audio output // looks similar to the
maudioi fast track isosyncronous outputs
>
> Interface 4 is audio input, it has only an input endpoint.
>
>> Interface 5 is potentially usb2 audio input. // ""
>
> There is no interface 5.
>
>> can USB_DEVICE_VENDOR_SPEC deal with out of order compliant/quirked
interfaces or only sequencial??
>
> The one has nothing to do with the other.
>
>
> Regards,
> Clemens