Bug 117321 - Phoenix Audio Technologies slow to be recognized as audio device
Summary: Phoenix Audio Technologies slow to be recognized as audio device
Status: RESOLVED CODE_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: Sound(ALSA) (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Jaroslav Kysela
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-04-28 12:05 UTC by pippo0312
Modified: 2016-04-29 11:46 UTC (History)
2 users (show)

See Also:
Kernel Version: 4.4.0
Tree: Mainline
Regression: No


Attachments
Fix patch (1.30 KB, patch)
2016-04-29 11:46 UTC, Takashi Iwai
Details | Diff

Description pippo0312 2016-04-28 12:05:38 UTC
When I connect the following USB device: 
http://www.phnxaudio.com/products/mt202-pcs/
the audio input/output devices in the Sound Control Panel (Ubuntu 16.04, 14.04) disappear and it takes arount 30 seconds to have the various devices back available.
This problem was present also in previous kernel versions  4.1.x and 4.2.x 


The device USB ID are  1de7:0114
The bug seems similar to: https://bugzilla.kernel.org/show_bug.cgi?id=110221

I see the following errors in dmesg:

[177382.368822] usb 3-8: new full-speed USB device number 5 using xhci_hcd
[177382.498587] usb 3-8: New USB device found, idVendor=1de7, idProduct=0114
[177382.498590] usb 3-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[177382.498591] usb 3-8: Product: Phnx MT202pcs
[177382.498592] usb 3-8: Manufacturer: Phoenix Audio Technologies
[177382.498772] usb 3-8: ep 0x83 - rounding interval to 64 microframes, ep desc says 80 microframes
[177387.497454] usb 3-8: 1:1: cannot get freq at ep 0x2
[177392.497993] usb 3-8: 2:1: cannot get freq at ep 0x85
[177392.503900] input: Phoenix Audio Technologies Phnx MT202pcs as /devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.3/0003:1DE7:0114.0004/input/input16
[177392.558194] hid-generic 0003:1DE7:0114.0004: input,hidraw3: USB HID v1.00 Device [Phoenix Audio Technologies Phnx MT202pcs] on usb-0000:00:14.0-8/input3
[177392.558803] hid-generic 0003:1DE7:0114.0005: hiddev0,hidraw4: USB HID v1.00 Device [Phoenix Audio Technologies Phnx MT202pcs] on usb-0000:00:14.0-8/input4
[177397.610442] usb 3-8: 2:1: cannot get freq at ep 0x85
[177402.611053] usb 3-8: 2:1: cannot get freq at ep 0x85
[177407.619542] usb 3-8: 1:1: cannot get freq at ep 0x2
[177412.620073] usb 3-8: 1:1: cannot get freq at ep 0x2
[177417.620616] usb 3-8: 2:1: cannot get freq at ep 0x85
[177422.621065] usb 3-8: 2:1: cannot get freq at ep 0x85
[177427.641658] usb 3-8: 1:1: cannot get freq at ep 0x2
[177432.642153] usb 3-8: 1:1: cannot get freq at ep 0x2
[177437.654658] usb 3-8: 2:1: cannot get freq at ep 0x85
[177442.655161] usb 3-8: 2:1: cannot get freq at ep 0x85
[177455.996534] usb 3-8: 1:1: cannot get freq at ep 0x2
[177460.997077] usb 3-8: 1:1: cannot get freq at ep 0x2
[177474.530544] usb 3-8: 2:1: cannot get freq at ep 0x85
[177479.531018] usb 3-8: 2:1: cannot get freq at ep 0x85

the output of lsub -vvvv can be found below:


Bus 003 Device 005: ID 1de7:0114  
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1de7 
  idProduct          0x0114 
  bcdDevice            6.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          240
    bNumInterfaces          5
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              200mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol      0 
      iInterface              0 
      AudioControl Interface Descriptor:
        bLength                10
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength           68
        bInCollection           2
        baInterfaceNr( 0)       1
        baInterfaceNr( 1)       2
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          5
        bNrChannels             1
        wChannelConfig     0x0000
        iChannelNames           0 
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                 8
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 3
        bSourceID               1
        bControlSize            1
        bmaControls( 0)      0x03
          Mute Control
          Volume Control
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             5
        wTerminalType      0x0301 Speaker
        bAssocTerminal          1
        bSourceID               3
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             2
        wTerminalType      0x0201 Microphone
        bAssocTerminal          6
        bNrChannels             1
        wChannelConfig     0x0000
        iChannelNames           0 
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                 8
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 4
        bSourceID               2
        bControlSize            1
        bmaControls( 0)      0x03
          Mute Control
          Volume Control
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             6
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          2
        bSourceID               4
        iTerminal               0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           1
        bDelay                  1 frames
        wFormatTag              1 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             1
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        32000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
        bRefresh                0
        bSynchAddress           0
        AudioControl Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x01
            Sampling Frequency
          bLockDelayUnits         0 Undefined
          wLockDelay              0 Undefined
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           6
        bDelay                  1 frames
        wFormatTag              1 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             1
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        32000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x85  EP 5 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
        bRefresh                0
        bSynchAddress           0
        AudioControl Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x01
            Sampling Frequency
          bLockDelayUnits         0 Undefined
          wLockDelay              0 Undefined
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.00
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      27
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              10
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        4
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.00
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      48
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval               2
Comment 1 Takashi Iwai 2016-04-28 12:58:26 UTC
The device ID is slightly different from the previous patch for another Phoenix device.

Could you try to add your device id 1de7:0114 in snd_usb_get_sample_rate_quirk() in sound/usb/quirks.c?

--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1139,6 +1139,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
 	case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
 	case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
 	case USB_ID(0x1de7, 0x0014): /* Phoenix Audio TMX320 */
+	case USB_ID(0x1de7, 0x0114): /* Phoenix Audio MT202pcs */
 	case USB_ID(0x21B4, 0x0081): /* AudioQuest DragonFly */
 		return true;
 	}
Comment 2 pippo0312 2016-04-28 16:01:12 UTC
Yes, 
the patch works perfectly:


[   97.483030] usb 3-8: new full-speed USB device number 5 using xhci_hcd
[   97.612816] usb 3-8: New USB device found, idVendor=1de7, idProduct=0114
[   97.612818] usb 3-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[   97.612819] usb 3-8: Product: Phnx MT202pcs
[   97.612820] usb 3-8: Manufacturer: Phoenix Audio Technologies
[   97.612972] usb 3-8: ep 0x83 - rounding interval to 64 microframes, ep desc says 80 microframes
[   97.620820] input: Phoenix Audio Technologies Phnx MT202pcs as /devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.3/0003:1DE7:0114.0004/input/input16
[   97.675176] hid-generic 0003:1DE7:0114.0004: input,hidraw3: USB HID v1.00 Device [Phoenix Audio Technologies Phnx MT202pcs] on usb-0000:00:14.0-8/input3
[   97.675955] hid-generic 0003:1DE7:0114.0005: hiddev0,hidraw4: USB HID v1.00 Device [Phoenix Audio Technologies Phnx MT202pcs] on usb-0000:00:14.0-8/input4


Is there any hope to have this fix deployed in the 4.4.x kernel used by ubuntu LTS (and other distros)?

The Phoenix devices are commonly used for audio conferencing and without this patch they create several problems and are almost not usable on linux

  Best Regards
Comment 3 Takashi Iwai 2016-04-29 09:24:59 UTC
I submitted the fix, and it'll be included in Linus tree in the next pull request, possibly in 4.6-rc7 or 4.6-final.  Once after that, it'll be backported to other stable branches.
Comment 4 pippo0312 2016-04-29 09:53:04 UTC
(In reply to Takashi Iwai from comment #3)
> I submitted the fix, and it'll be included in Linus tree in the next pull
> request, possibly in 4.6-rc7 or 4.6-final.  Once after that, it'll be
> backported to other stable branches.

Thanks a lot

    Regards
Comment 5 pippo0312 2016-04-29 10:46:11 UTC
Sorry to open again the case, but I just tried another Phoenix device the "executive" model:
http://www.phnxaudio.com/products/mt202-exe/
and there is the same problem.
The device IDs are: 1de7:0013

[63132.972107] usb 3-8: new full-speed USB device number 7 using xhci_hcd
[63133.101740] usb 3-8: New USB device found, idVendor=1de7, idProduct=0013
[63133.101745] usb 3-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[63133.101746] usb 3-8: Product: Phnx MT202exe 
[63133.101749] usb 3-8: Manufacturer: Phoenix Audio Technologies 
[63133.101881] usb 3-8: ep 0x83 - rounding interval to 64 microframes, ep desc says 80 microframes
[63133.101885] usb 3-8: ep 0x84 - rounding interval to 64 microframes, ep desc says 80 microframes
[63138.099714] usb 3-8: 1:1: cannot get freq at ep 0x2
[63143.099302] usb 3-8: 2:1: cannot get freq at ep 0x85
[63143.104405] input: Phoenix Audio Technologies  Phnx MT202exe  as /devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.3/0003:1DE7:0013.0008/input/input18
[63143.159426] hid-generic 0003:1DE7:0013.0008: input,hidraw3: USB HID v1.00 Device [Phoenix Audio Technologies  Phnx MT202exe ] on usb-0000:00:14.0-8/input3
[63143.160204] hid-generic 0003:1DE7:0013.0009: hiddev0,hidraw4: USB HID v1.00 Device [Phoenix Audio Technologies  Phnx MT202exe ] on usb-0000:00:14.0-8/input4
[63148.190847] usb 3-8: 2:1: cannot get freq at ep 0x85
[63153.190381] usb 3-8: 2:1: cannot get freq at ep 0x85
[63158.193978] usb 3-8: 1:1: cannot get freq at ep 0x2
[63163.193439] usb 3-8: 1:1: cannot get freq at ep 0x2
[63168.192909] usb 3-8: 2:1: cannot get freq at ep 0x85
[63173.192492] usb 3-8: 2:1: cannot get freq at ep 0x85
[63178.207989] usb 3-8: 1:1: cannot get freq at ep 0x2
[63182.227122] usb 3-8: 1:1: cannot get freq at ep 0x2
[63187.235271] usb 3-8: 2:1: cannot get freq at ep 0x85
[63192.234806] usb 3-8: 2:1: cannot get freq at ep 0x85

output of lsusb -vvvv:

Bus 003 Device 007: ID 1de7:0013  
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1de7 
  idProduct          0x0013 
  bcdDevice            4.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          242
    bNumInterfaces          5
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              200mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol      0 
      iInterface              0 
      AudioControl Interface Descriptor:
        bLength                10
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength           70
        bInCollection           2
        baInterfaceNr( 0)       1
        baInterfaceNr( 1)       2
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          5
        bNrChannels             1
        wChannelConfig     0x0000
        iChannelNames           0 
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 3
        bSourceID               1
        bControlSize            2
        bmaControls( 0)      0x03
        bmaControls( 0)      0x00
          Mute Control
          Volume Control
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             5
        wTerminalType      0x0301 Speaker
        bAssocTerminal          1
        bSourceID               3
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             2
        wTerminalType      0x0201 Microphone
        bAssocTerminal          6
        bNrChannels             1
        wChannelConfig     0x0000
        iChannelNames           0 
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 4
        bSourceID               2
        bControlSize            2
        bmaControls( 0)      0x03
        bmaControls( 0)      0x00
          Mute Control
          Volume Control
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             6
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          2
        bSourceID               4
        iTerminal               0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           1
        bDelay                  1 frames
        wFormatTag              1 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             1
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        16000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval               1
        bRefresh                0
        bSynchAddress           0
        AudioControl Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x01
            Sampling Frequency
          bLockDelayUnits         0 Undefined
          wLockDelay              0 Undefined
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           6
        bDelay                  1 frames
        wFormatTag              1 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             1
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        16000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x85  EP 5 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval               1
        bRefresh                0
        bSynchAddress           0
        AudioControl Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x01
            Sampling Frequency
          bLockDelayUnits         0 Undefined
          wLockDelay              0 Undefined
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.00
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      31
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              10
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        4
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.00
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      48
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval              10


I imagine a similar patch can fix also this issue, can you please submit it ?

  Thanks a lot!
Comment 6 Takashi Iwai 2016-04-29 11:46:19 UTC
OK, the revised patch is below.  It'll be included instead of the previous one.
Comment 7 Takashi Iwai 2016-04-29 11:46:50 UTC
Created attachment 214711 [details]
Fix patch

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