[pulseaudio-tickets] [Bug 39664] New: Kinect USB Audio device and module-alsa-card.c: Failed to find a working profile.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=39664

           Summary: Kinect USB Audio device and module-alsa-card.c: Failed
                    to find a working profile.
           Product: PulseAudio
           Version: unspecified
          Platform: All
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: alsa
        AssignedTo: pulseaudio-bugs at lists.freedesktop.org
        ReportedBy: ospite at studenti.unina.it
         QAContact: pulseaudio-bugs at lists.freedesktop.org
                CC: lennart at poettering.net


Created an attachment (id=49710)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=49710)
Kinect, module-alsa-card.c: Failed to find a working profile.

Hi,

the Microsoft Kinect sensor device comes with array of four microphones on it 
and it shows up as a USB Audio Class device after uploading a firmware to it, 
but the Linux audio stack still needs some touches before the device works out 
of the box.

This report starts from pulseaudio to track what the missing pieces are, I 
suspect snd-usb-audio is involved too.

This is a timeline of what happens:

  1. the sensor device is connected;

  2. a udev rule detects the audio part of the device (idVendor=045e, 
     idProduct=02ad, Product: Xbox NUI Audio) and uploads the firmware to it;

  3. the device is re-enumerated and shows up as a proper USB Audio Class 
     device (idVendor=045e, idProduct=02bb, Product: Kinect USB Audio).

At this point pulseaudio fails to detect it (full log in the attachments):

  pulseaudio[1643]: module-alsa-card.c: Failed to find a working profile.
  pulseaudio[1643]: module.c: Failed to load  module "module-alsa-card"
(argument: "device_id="1"
name="usb-Microsoft_Kinect_USB_Audio_A44884D23275040A-01-Audio"
card_name="alsa_card.usb-Microsoft_Kinect_USB_Audio_A44884D23275040A-01-Audio"
tsched=yes ignore_dB=no card_properties="module-udev-detect.discovered=1""):
initialization failed.

I noticed that alsamixer tells "This sound device does not have any controls.", 
I don't know if this is the cause of the message above.

However if I kill and restart pulseaudio the device gets detected and can be 
used mostly OK, even if the names of the Microphones are not right yet (see the 
attached screenshot), I imagined this happened because udev is not involved 
when restarting the audio server with the device connected already, but I am 
not sure of this.

About alsamixer not showing any controls, by looking at the USB descriptor 
(attached as well) I thought it was because snd-usb-audio does not support the 
microphones arrays yet (wTerminalType 0x0205 Microphone Array), a quick
"grep -r 205 sound/usb" seems to confirm this but again I am not 100% sure.

I am looking into this but I wanted to ask for advice here too, and keep 
history of the pulseaudio point of view of the issue anyways.

Thanks,
   Antonio Ospite
   http://ao2.it

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