---------- Forwarded message ---------- From: "David Alexander" lidxv0n@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@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@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