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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Connecting usb-dac causes "failed to load module module-udev-detect.c""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=68215">68215</a>
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>lennart@poettering.net
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>pulseaudio-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Connecting usb-dac causes "failed to load module module-udev-detect.c"
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>pulseaudio-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>cac2s.spam@gmail.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>daemon
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>PulseAudio
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=84168" name="attach_84168" title="config files">attachment 84168</a> <a href="attachment.cgi?id=84168&action=edit" title="config files">[details]</a></span>
config files

System: Debian Wheezy

PulseAudio is configured as a system-wide daemon and does not define usb-dac
while connecting it to the computer.

$ pactl list short cards
0    alsa_card.pci-0000_00_01.1    module-alsa-card.c
1    alsa_card.pci-0000_00_14.2    module-alsa-card.c

After restart pulseaudio daemon (without detaching dec) the device appears in
list cards as it should be:

$ pactl list short cards
0    alsa_card.pci-0000_00_01.1    module-alsa-card.c
1    alsa_card.usb-Burr-Brown_from_TI_USB_Audio_DAC-00-DAC   
module-alsa-card.c
2    alsa_card.pci-0000_00_14.2    module-alsa-card.c

PulseAudio 4.0 from testing (Debian Jessie) has same issue. 

========================
Additional information
========================

# tail -f /var/log/messages

Aug 17 13:46:32 cac2s-tp kernel: [ 5487.416304] usb 3-2: new full-speed USB
device number 16 using ohci_hcd
Aug 17 13:46:32 cac2s-tp kernel: [ 5487.583046] usb 3-2: New USB device found,
idVendor=08bb, idProduct=2706
Aug 17 13:46:32 cac2s-tp kernel: [ 5487.583062] usb 3-2: New USB device
strings: Mfr=1, Product=2, SerialNumber=0
Aug 17 13:46:32 cac2s-tp kernel: [ 5487.583071] usb 3-2: Product: USB Audio DAC 
Aug 17 13:46:32 cac2s-tp kernel: [ 5487.583078] usb 3-2: Manufacturer:
Burr-Brown from TI              
Aug 17 13:46:32 cac2s-tp kernel: [ 5487.637310] input: Burr-Brown from TI      
        USB Audio DAC    as
/devices/pci0000:00/0000:00:12.0/usb3/3-2/3-2:1.2/input/input25
Aug 17 13:46:32 cac2s-tp kernel: [ 5487.638042] generic-usb
0003:08BB:2706.000E: input,hidraw0: USB HID v1.00 Device [Burr-Brown from TI   
           USB Audio DAC   ] on usb-0000:00:12.0-2/input2
Aug 17 13:46:33 cac2s-tp pulseaudio[1606]: [pulseaudio] client.c: Created 1
"Native client (UNIX socket client)"
Aug 17 13:46:33 cac2s-tp pulseaudio[1606]: [pulseaudio] client.c: Freed 1
"Native client (UNIX socket client)"
Aug 17 13:46:33 cac2s-tp pulseaudio[1606]: [pulseaudio] protocol-native.c:
Connection died.
Aug 17 13:46:33 cac2s-tp pulseaudio[1606]: [pulseaudio] module-udev-detect.c:
Card /devices/pci0000:00/0000:00:12.0/usb3/3-2/3-2:1.0/sound/card2
(alsa_card.usb-Burr-Brown_from_TI_USB_Audio_DAC-00-DAC) failed to load module.</pre>
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