<meta http-equiv="content-type" content="text/html; charset=utf-8"><span class="Apple-style-span" style="border-collapse: collapse; color: rgb(51, 51, 51); font-family: arial, sans-serif; font-size: 11px; ">Hi,<div><br></div>
<div>I seem to have an issue with USB soundcards on my laptop.</div><div>I have tried two of them, but I keep getting crackling sounds while playing with Ardour or Hydrogen.</div><div>Everytime this crackling sounds occur, I get the following in dmesg:</div>
<div>ALSA urb.c:480: frame 5 active: -18</div><div><br></div><div>The Kernel is 2.6.39 with Irqthreads, Alsa is the git version (1.0.24).</div><div><br></div><div>I have tried a lot of things already, but I'm really ready to restart the investigation from scratch and to provide any information!</div>
<div><br></div><div>Thanks in advance for the help.</div><div><br></div><div>dmesg details:</div><div>[ 41.927872] CE: hpet2 increased min_delta_ns to 7500 nsec<br>[ 41.927897] CE: hpet2 increased min_delta_ns to 11250 nsec<br>
[ 75.569991] CE: hpet5 increased min_delta_ns to 7500 nsec<br>[ 75.570003] CE: hpet5 increased min_delta_ns to 11250 nsec<br>[ 79.234811] ALSA urb.c:480: frame 1 active: -71<br>[ 102.065990] CE: hpet4 increased min_delta_ns to 7500 nsec<br>
[ 102.066005] CE: hpet4 increased min_delta_ns to 11250 nsec<br>[ 147.964992] ALSA urb.c:480: frame 5 active: -18<br>[ 185.833311] ALSA urb.c:480: frame 4 active: -18<br>[ 271.091937] ALSA urb.c:480: frame 1 active: -18<br>
[ 276.686711] ALSA urb.c:480: frame 1 active: -18<br>[ 300.120588] ALSA urb.c:480: frame 0 active: -18<br>[ 302.416319] CE: hpet increased min_delta_ns to 30169 nsec<br>[ 318.225546] ALSA urb.c:480: frame 7 active: -18<br>
[ 318.433469] ALSA urb.c:480: frame 7 active: -18</div><div><br></div><div>lsusb -v gives (only the details about the soundcard):</div><div><div>Bus 001 Device 003: ID 0763:2080 Midiman M-Audio RunTime DFU</div><div>Device Descriptor:</div>
<div> bLength 18</div><div> bDescriptorType 1</div><div> bcdUSB 2.00</div><div> bDeviceClass 0 (Defined at Interface level)</div><div> bDeviceSubClass 0 </div><div>
bDeviceProtocol 0 </div><div> bMaxPacketSize0 64</div><div> idVendor 0x0763 Midiman</div><div> idProduct 0x2080 M-Audio RunTime DFU</div><div> bcdDevice 1.51</div><div> iManufacturer 1 M-Audio</div>
<div> iProduct 2 Fast Track Ultra</div><div> iSerial 0 </div><div> bNumConfigurations 1</div><div> Configuration Descriptor:</div><div> bLength 9</div><div> bDescriptorType 2</div>
<div> wTotalLength 340</div><div> bNumInterfaces 5</div><div> bConfigurationValue 1</div><div> iConfiguration 0 </div><div> bmAttributes 0xc0</div><div> Self Powered</div>
<div> MaxPower 0mA</div><div> Interface Association:</div><div> bLength 8</div><div> bDescriptorType 11</div><div> bFirstInterface 0</div><div> bInterfaceCount 5</div>
<div> bFunctionClass 255 Vendor Specific Class</div><div> bFunctionSubClass 1 </div><div> bFunctionProtocol 0 </div><div> iFunction 2 Fast Track Ultra</div><div> Interface Descriptor:</div>
<div> bLength 9</div><div> bDescriptorType 4</div><div> bInterfaceNumber 0</div><div> bAlternateSetting 0</div><div> bNumEndpoints 0</div><div> bInterfaceClass 255 Vendor Specific Class</div>
<div> bInterfaceSubClass 1 </div><div> bInterfaceProtocol 0 </div><div> iInterface 2 Fast Track Ultra</div><div> ** UNRECOGNIZED: 0b 24 01 00 01 34 00 03 01 02 03</div><div> ** UNRECOGNIZED: 0c 24 02 01 03 06 00 08 03 00 00 00</div>
<div> ** UNRECOGNIZED: 09 24 03 02 01 01 00 01 00</div><div> ** UNRECOGNIZED: 0c 24 02 03 01 01 00 08 03 00 00 00</div><div> ** UNRECOGNIZED: 09 24 03 04 03 06 00 03 00</div><div> Interface Descriptor:</div>
<div> bLength 9</div><div> bDescriptorType 4</div><div> bInterfaceNumber 1</div><div> bAlternateSetting 0</div><div> bNumEndpoints 0</div><div> bInterfaceClass 255 Vendor Specific Class</div>
<div> bInterfaceSubClass 2 </div><div> bInterfaceProtocol 0 </div><div> iInterface 0 </div><div> Interface Descriptor:</div><div> bLength 9</div><div> bDescriptorType 4</div>
<div> bInterfaceNumber 1</div><div> bAlternateSetting 1</div><div> bNumEndpoints 2</div><div> bInterfaceClass 255 Vendor Specific Class</div><div> bInterfaceSubClass 2 </div>
<div> bInterfaceProtocol 0 </div><div> iInterface 0 </div><div> ** UNRECOGNIZED: 07 24 01 03 01 01 00</div><div> ** UNRECOGNIZED: 14 24 02 01 08 03 18 04 44 ac 00 80 bb 00 88 58 01 00 77 01</div>
<div> Endpoint Descriptor:</div><div> bLength 7</div><div> bDescriptorType 5</div><div> bEndpointAddress 0x01 EP 1 OUT</div><div> bmAttributes 5</div>
<div> Transfer Type Isochronous</div><div> Synch Type Asynchronous</div><div> Usage Type Data</div><div> wMaxPacketSize 0x0138 1x 312 bytes</div>
<div> bInterval 1</div><div> Endpoint Descriptor:</div><div> bLength 7</div><div> bDescriptorType 5</div><div> bEndpointAddress 0x82 EP 2 IN</div>
<div> bmAttributes 1</div><div> Transfer Type Isochronous</div><div> Synch Type None</div><div> Usage Type Data</div><div> wMaxPacketSize 0x0003 1x 3 bytes</div>
<div> bInterval 1</div><div> Interface Descriptor:</div><div> bLength 9</div><div> bDescriptorType 4</div><div> bInterfaceNumber 2</div><div> bAlternateSetting 0</div>
<div> bNumEndpoints 0</div><div> bInterfaceClass 255 Vendor Specific Class</div><div> bInterfaceSubClass 2 </div><div> bInterfaceProtocol 0 </div><div> iInterface 0 </div>
<div> Interface Descriptor:</div><div> bLength 9</div><div> bDescriptorType 4</div><div> bInterfaceNumber 2</div><div> bAlternateSetting 1</div><div> bNumEndpoints 1</div>
<div> bInterfaceClass 255 Vendor Specific Class</div><div> bInterfaceSubClass 2 </div><div> bInterfaceProtocol 0 </div><div> iInterface 0 </div><div> ** UNRECOGNIZED: 07 24 01 02 01 01 00</div>
<div> ** UNRECOGNIZED: 14 24 02 01 08 03 18 04 44 ac 00 80 bb 00 88 58 01 00 77 01</div><div> Endpoint Descriptor:</div><div> bLength 7</div><div> bDescriptorType 5</div><div>
bEndpointAddress 0x81 EP 1 IN</div><div> bmAttributes 5</div><div> Transfer Type Isochronous</div><div> Synch Type Asynchronous</div><div> Usage Type Data</div>
<div> wMaxPacketSize 0x0138 1x 312 bytes</div><div> bInterval 1</div><div> Interface Descriptor:</div><div> bLength 9</div><div> bDescriptorType 4</div>
<div> bInterfaceNumber 2</div><div> bAlternateSetting 2</div><div> bNumEndpoints 1</div><div> bInterfaceClass 255 Vendor Specific Class</div><div> bInterfaceSubClass 2 </div>
<div> bInterfaceProtocol 0 </div><div> iInterface 0 </div><div> ** UNRECOGNIZED: 07 24 01 02 01 01 00</div><div> ** UNRECOGNIZED: 14 24 02 01 08 03 18 04 44 ac 00 80 bb 00 88 58 01 00 77 01</div>
<div> Endpoint Descriptor:</div><div> bLength 7</div><div> bDescriptorType 5</div><div> bEndpointAddress 0x81 EP 1 IN</div><div> bmAttributes 5</div>
<div> Transfer Type Isochronous</div><div> Synch Type Asynchronous</div><div> Usage Type Data</div><div> wMaxPacketSize 0x0138 1x 312 bytes</div>
<div> bInterval 1</div><div> Interface Descriptor:</div><div> bLength 9</div><div> bDescriptorType 4</div><div> bInterfaceNumber 3</div><div> bAlternateSetting 0</div>
<div> bNumEndpoints 2</div><div> bInterfaceClass 1 Audio</div><div> bInterfaceSubClass 3 MIDI Streaming</div><div> bInterfaceProtocol 0 </div><div> iInterface 5 Fast Track Ultra</div>
<div> MIDIStreaming Interface Descriptor:</div><div> bLength 7</div><div> bDescriptorType 36</div><div> bDescriptorSubtype 1 (HEADER)</div><div> bcdADC 1.00</div>
<div> wTotalLength 63</div><div> MIDIStreaming Interface Descriptor:</div><div> bLength 6</div><div> bDescriptorType 36</div><div> bDescriptorSubtype 2 (MIDI_IN_JACK)</div>
<div> bJackType 1 Embedded</div><div> bJackID 1</div><div> iJack 0 </div><div> MIDIStreaming Interface Descriptor:</div><div> bLength 6</div>
<div> bDescriptorType 36</div><div> bDescriptorSubtype 2 (MIDI_IN_JACK)</div><div> bJackType 2 External</div><div> bJackID 2</div><div> iJack 0 </div>
<div> MIDIStreaming Interface Descriptor:</div><div> bLength 8</div><div> bDescriptorType 36</div><div> bDescriptorSubtype 3 (MIDI_OUT_JACK)</div><div> Warning: Descriptor too short</div>
<div> bJackType 1 Embedded</div><div> bJackID 3</div><div> bNrInputPins 1</div><div> baSourceID( 0) 2</div><div> BaSourcePin( 0) 1</div>
<div> iJack 8 </div><div> MIDIStreaming Interface Descriptor:</div><div> bLength 8</div><div> bDescriptorType 36</div><div> bDescriptorSubtype 3 (MIDI_OUT_JACK)</div>
<div> Warning: Descriptor too short</div><div> bJackType 2 External</div><div> bJackID 4</div><div> bNrInputPins 1</div><div> baSourceID( 0) 1</div>
<div> BaSourcePin( 0) 1</div><div> iJack 0 </div><div> Endpoint Descriptor:</div><div> bLength 7</div><div> bDescriptorType 5</div><div> bEndpointAddress 0x07 EP 7 OUT</div>
<div> bmAttributes 2</div><div> Transfer Type Bulk</div><div> Synch Type None</div><div> Usage Type Data</div><div> wMaxPacketSize 0x0008 1x 8 bytes</div>
<div> bInterval 8</div><div> MIDIStreaming Endpoint Descriptor:</div><div> bLength 5</div><div> bDescriptorType 37</div><div> bDescriptorSubtype 1 (GENERAL)</div>
<div> bNumEmbMIDIJack 1</div><div> baAssocJackID( 0) 1</div><div> Endpoint Descriptor:</div><div> bLength 7</div><div> bDescriptorType 5</div><div>
bEndpointAddress 0x87 EP 7 IN</div><div> bmAttributes 2</div><div> Transfer Type Bulk</div><div> Synch Type None</div><div> Usage Type Data</div>
<div> wMaxPacketSize 0x0008 1x 8 bytes</div><div> bInterval 0</div><div> MIDIStreaming Endpoint Descriptor:</div><div> bLength 5</div><div> bDescriptorType 37</div>
<div> bDescriptorSubtype 1 (GENERAL)</div><div> bNumEmbMIDIJack 1</div><div> baAssocJackID( 0) 3</div><div> Interface Descriptor:</div><div> bLength 9</div>
<div> bDescriptorType 4</div><div> bInterfaceNumber 4</div><div> bAlternateSetting 0</div><div> bNumEndpoints 0</div><div> bInterfaceClass 254 Application Specific Interface</div>
<div> bInterfaceSubClass 1 Device Firmware Update</div><div> bInterfaceProtocol 0 </div><div> iInterface 7 M-Audio DFU</div><div> Device Firmware Upgrade Interface Descriptor:</div>
<div> bLength 9</div><div> bDescriptorType 33</div><div> bmAttributes 1</div><div> Will Not Detach</div><div> Manifestation Intolerant</div>
<div> Upload Unsupported</div><div> Download Supported</div><div> wDetachTimeout 2000 milliseconds</div><div> wTransferSize 1024 bytes</div><div> bcdDFUVersion 1.10</div>
<div>Device Qualifier (for other device speed):</div><div> bLength 10</div><div> bDescriptorType 6</div><div> bcdUSB 2.00</div><div> bDeviceClass 0 (Defined at Interface level)</div>
<div> bDeviceSubClass 0 </div><div> bDeviceProtocol 0 </div><div> bMaxPacketSize0 64</div><div> bNumConfigurations 1</div><div>Device Status: 0x0001</div><div> Self Powered</div></div>
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