Public bug reported:

USB DAC stops playing sound after a second.
I had problem with kernel 4.15. 
So, I tried upgrading to 4.19 but still issue persists. 
I think, we might need to add it to sound/usb/quirks.c

I see following in dmesg

[ 5937.978117] usb 1-1.4.2: USB disconnect, device number 16
[ 5955.721597] usb 1-1.4.1: new full-speed USB device number 17 using xhci_hcd
[ 5956.302910] usb 1-1.4.1: New USB device found, idVendor=2912, 
idProduct=120b, bcdDevice= 1.0c
[ 5956.302917] usb 1-1.4.1: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
[ 5956.302921] usb 1-1.4.1: Product: Audioengine D3
[ 5956.302926] usb 1-1.4.1: Manufacturer: Audioengine
[ 5956.302929] usb 1-1.4.1: SerialNumber: Audioengine
[ 5956.320621] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
[ 5956.920844] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
[ 5956.938929] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1

And lsusb -v has following entry for the device.

Bus 001 Device 017: ID 2912:120b
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x2912
  idProduct          0x120b
  bcdDevice            1.0c
  iManufacturer           1
  iProduct                2
  iSerial                 3
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          131
    bNumInterfaces          2
    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                 9
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength           43
        bInCollection           1
        baInterfaceNr( 0)       1
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             5
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bNrChannels             2
        wChannelConfig     0x0003
          Left Front (L)
          Right Front (R)
        iChannelNames           0
        iTerminal               0
      AudioControl Interface Descriptor:
        bLength                13
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 7
        bSourceID               5
        bControlSize            2
        bmaControls( 0)      0x01
        bmaControls( 0)      0x00
          Mute Control
        bmaControls( 1)      0x02
        bmaControls( 1)      0x00
          Volume Control
        bmaControls( 2)      0x02
        bmaControls( 2)      0x00
          Volume Control
        iFeature                0
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             8
        wTerminalType      0x0301 Speaker
        bAssocTerminal          0
        bSourceID               7
        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           2
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0
      iInterface              0
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           5
        bDelay                  1 frames
        wFormatTag              1 PCM
      AudioStreaming Interface Descriptor:
        bLength                20
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             2
        bSubframeSize           3
        bBitResolution         24
        bSamFreqType            4 Discrete
        tSamFreq[ 0]        44100
        tSamFreq[ 1]        48000
        tSamFreq[ 2]        88200
        tSamFreq[ 3]        96000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x024c  1x 588 bytes
        bInterval               1
        bRefresh                0
        bSynchAddress         131
        AudioControl Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x01
            Sampling Frequency
          bLockDelayUnits         0 Undefined
          wLockDelay              0 Undefined
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0003  1x 3 bytes
        bInterval               1
        bRefresh                5
        bSynchAddress           0

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
Uname: Linux 4.19.15-041915-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  wolf       3380 F.... pulseaudio
 /dev/snd/pcmC1D0p:   wolf       3380 F...m pulseaudio
 /dev/snd/controlC0:  wolf       3380 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan 16 14:43:03 2019
EcryptfsInUse: Yes
InstallationDate: Installed on 2018-03-07 (315 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Audioengine D3 - Audioengine D3
Symptom_PulseAudioLog:
 Jan 16 12:18:52 usmanz dbus-daemon[1469]: [system] Activating via systemd: 
service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' 
requested by ':1.32' (uid=121 pid=2077 comm="/usr/bin/pulseaudio --daemonize=no 
")
 Jan 16 12:18:52 usmanz pulseaudio[2077]: W: [pulseaudio] sink.c: Default and 
alternate sample rates are the same.
Symptom_Type: Sound works for a while, then breaks
Title: [USB-Audio - Audioengine D3, playback] fails after a while
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/04/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.6.3
dmi.board.name: 0F6P3V
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.6.3:bd11/04/2018:svnDellInc.:pnXPS139370:pvr:rvnDellInc.:rn0F6P3V:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 9370
dmi.product.sku: 07E6
dmi.sys.vendor: Dell Inc.

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic wayland-session

** Summary changed:

- [USB-Audio - Audioengine D3, playback] fails after a while (a secpmd)
+ [USB-Audio - Audioengine D3, playback] fails after a while (a second)

** Description changed:

+ USB DAC stops playing sound after a second.
  I see following in dmesg
- 
  
  [ 5937.978117] usb 1-1.4.2: USB disconnect, device number 16
  [ 5955.721597] usb 1-1.4.1: new full-speed USB device number 17 using xhci_hcd
  [ 5956.302910] usb 1-1.4.1: New USB device found, idVendor=2912, 
idProduct=120b, bcdDevice= 1.0c
  [ 5956.302917] usb 1-1.4.1: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
  [ 5956.302921] usb 1-1.4.1: Product: Audioengine D3
  [ 5956.302926] usb 1-1.4.1: Manufacturer: Audioengine
  [ 5956.302929] usb 1-1.4.1: SerialNumber: Audioengine
  [ 5956.320621] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
  [ 5956.920844] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
  [ 5956.938929] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
  
  And lsusb -v has following entry for the device.
  
- Bus 001 Device 017: ID 2912:120b  
+ Bus 001 Device 017: ID 2912:120b
  Couldn't open device, some information will be missing
  Device Descriptor:
-   bLength                18
-   bDescriptorType         1
-   bcdUSB               1.00
-   bDeviceClass            0 (Defined at Interface level)
-   bDeviceSubClass         0 
-   bDeviceProtocol         0 
-   bMaxPacketSize0         8
-   idVendor           0x2912 
-   idProduct          0x120b 
-   bcdDevice            1.0c
-   iManufacturer           1 
-   iProduct                2 
-   iSerial                 3 
-   bNumConfigurations      1
-   Configuration Descriptor:
-     bLength                 9
-     bDescriptorType         2
-     wTotalLength          131
-     bNumInterfaces          2
-     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                 9
-         bDescriptorType        36
-         bDescriptorSubtype      1 (HEADER)
-         bcdADC               1.00
-         wTotalLength           43
-         bInCollection           1
-         baInterfaceNr( 0)       1
-       AudioControl Interface Descriptor:
-         bLength                12
-         bDescriptorType        36
-         bDescriptorSubtype      2 (INPUT_TERMINAL)
-         bTerminalID             5
-         wTerminalType      0x0101 USB Streaming
-         bAssocTerminal          0
-         bNrChannels             2
-         wChannelConfig     0x0003
-           Left Front (L)
-           Right Front (R)
-         iChannelNames           0 
-         iTerminal               0 
-       AudioControl Interface Descriptor:
-         bLength                13
-         bDescriptorType        36
-         bDescriptorSubtype      6 (FEATURE_UNIT)
-         bUnitID                 7
-         bSourceID               5
-         bControlSize            2
-         bmaControls( 0)      0x01
-         bmaControls( 0)      0x00
-           Mute Control
-         bmaControls( 1)      0x02
-         bmaControls( 1)      0x00
-           Volume Control
-         bmaControls( 2)      0x02
-         bmaControls( 2)      0x00
-           Volume Control
-         iFeature                0 
-       AudioControl Interface Descriptor:
-         bLength                 9
-         bDescriptorType        36
-         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
-         bTerminalID             8
-         wTerminalType      0x0301 Speaker
-         bAssocTerminal          0
-         bSourceID               7
-         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           2
-       bInterfaceClass         1 Audio
-       bInterfaceSubClass      2 Streaming
-       bInterfaceProtocol      0 
-       iInterface              0 
-       AudioStreaming Interface Descriptor:
-         bLength                 7
-         bDescriptorType        36
-         bDescriptorSubtype      1 (AS_GENERAL)
-         bTerminalLink           5
-         bDelay                  1 frames
-         wFormatTag              1 PCM
-       AudioStreaming Interface Descriptor:
-         bLength                20
-         bDescriptorType        36
-         bDescriptorSubtype      2 (FORMAT_TYPE)
-         bFormatType             1 (FORMAT_TYPE_I)
-         bNrChannels             2
-         bSubframeSize           3
-         bBitResolution         24
-         bSamFreqType            4 Discrete
-         tSamFreq[ 0]        44100
-         tSamFreq[ 1]        48000
-         tSamFreq[ 2]        88200
-         tSamFreq[ 3]        96000
-       Endpoint Descriptor:
-         bLength                 9
-         bDescriptorType         5
-         bEndpointAddress     0x01  EP 1 OUT
-         bmAttributes            5
-           Transfer Type            Isochronous
-           Synch Type               Asynchronous
-           Usage Type               Data
-         wMaxPacketSize     0x024c  1x 588 bytes
-         bInterval               1
-         bRefresh                0
-         bSynchAddress         131
-         AudioControl Endpoint Descriptor:
-           bLength                 7
-           bDescriptorType        37
-           bDescriptorSubtype      1 (EP_GENERAL)
-           bmAttributes         0x01
-             Sampling Frequency
-           bLockDelayUnits         0 Undefined
-           wLockDelay              0 Undefined
-       Endpoint Descriptor:
-         bLength                 9
-         bDescriptorType         5
-         bEndpointAddress     0x83  EP 3 IN
-         bmAttributes            1
-           Transfer Type            Isochronous
-           Synch Type               None
-           Usage Type               Data
-         wMaxPacketSize     0x0003  1x 3 bytes
-         bInterval               1
-         bRefresh                5
-         bSynchAddress           0
+   bLength                18
+   bDescriptorType         1
+   bcdUSB               1.00
+   bDeviceClass            0 (Defined at Interface level)
+   bDeviceSubClass         0
+   bDeviceProtocol         0
+   bMaxPacketSize0         8
+   idVendor           0x2912
+   idProduct          0x120b
+   bcdDevice            1.0c
+   iManufacturer           1
+   iProduct                2
+   iSerial                 3
+   bNumConfigurations      1
+   Configuration Descriptor:
+     bLength                 9
+     bDescriptorType         2
+     wTotalLength          131
+     bNumInterfaces          2
+     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                 9
+         bDescriptorType        36
+         bDescriptorSubtype      1 (HEADER)
+         bcdADC               1.00
+         wTotalLength           43
+         bInCollection           1
+         baInterfaceNr( 0)       1
+       AudioControl Interface Descriptor:
+         bLength                12
+         bDescriptorType        36
+         bDescriptorSubtype      2 (INPUT_TERMINAL)
+         bTerminalID             5
+         wTerminalType      0x0101 USB Streaming
+         bAssocTerminal          0
+         bNrChannels             2
+         wChannelConfig     0x0003
+           Left Front (L)
+           Right Front (R)
+         iChannelNames           0
+         iTerminal               0
+       AudioControl Interface Descriptor:
+         bLength                13
+         bDescriptorType        36
+         bDescriptorSubtype      6 (FEATURE_UNIT)
+         bUnitID                 7
+         bSourceID               5
+         bControlSize            2
+         bmaControls( 0)      0x01
+         bmaControls( 0)      0x00
+           Mute Control
+         bmaControls( 1)      0x02
+         bmaControls( 1)      0x00
+           Volume Control
+         bmaControls( 2)      0x02
+         bmaControls( 2)      0x00
+           Volume Control
+         iFeature                0
+       AudioControl Interface Descriptor:
+         bLength                 9
+         bDescriptorType        36
+         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
+         bTerminalID             8
+         wTerminalType      0x0301 Speaker
+         bAssocTerminal          0
+         bSourceID               7
+         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           2
+       bInterfaceClass         1 Audio
+       bInterfaceSubClass      2 Streaming
+       bInterfaceProtocol      0
+       iInterface              0
+       AudioStreaming Interface Descriptor:
+         bLength                 7
+         bDescriptorType        36
+         bDescriptorSubtype      1 (AS_GENERAL)
+         bTerminalLink           5
+         bDelay                  1 frames
+         wFormatTag              1 PCM
+       AudioStreaming Interface Descriptor:
+         bLength                20
+         bDescriptorType        36
+         bDescriptorSubtype      2 (FORMAT_TYPE)
+         bFormatType             1 (FORMAT_TYPE_I)
+         bNrChannels             2
+         bSubframeSize           3
+         bBitResolution         24
+         bSamFreqType            4 Discrete
+         tSamFreq[ 0]        44100
+         tSamFreq[ 1]        48000
+         tSamFreq[ 2]        88200
+         tSamFreq[ 3]        96000
+       Endpoint Descriptor:
+         bLength                 9
+         bDescriptorType         5
+         bEndpointAddress     0x01  EP 1 OUT
+         bmAttributes            5
+           Transfer Type            Isochronous
+           Synch Type               Asynchronous
+           Usage Type               Data
+         wMaxPacketSize     0x024c  1x 588 bytes
+         bInterval               1
+         bRefresh                0
+         bSynchAddress         131
+         AudioControl Endpoint Descriptor:
+           bLength                 7
+           bDescriptorType        37
+           bDescriptorSubtype      1 (EP_GENERAL)
+           bmAttributes         0x01
+             Sampling Frequency
+           bLockDelayUnits         0 Undefined
+           wLockDelay              0 Undefined
+       Endpoint Descriptor:
+         bLength                 9
+         bDescriptorType         5
+         bEndpointAddress     0x83  EP 3 IN
+         bmAttributes            1
+           Transfer Type            Isochronous
+           Synch Type               None
+           Usage Type               Data
+         wMaxPacketSize     0x0003  1x 3 bytes
+         bInterval               1
+         bRefresh                5
+         bSynchAddress           0
  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  Uname: Linux 4.19.15-041915-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC1:  wolf       3380 F.... pulseaudio
-  /dev/snd/pcmC1D0p:   wolf       3380 F...m pulseaudio
-  /dev/snd/controlC0:  wolf       3380 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  wolf       3380 F.... pulseaudio
+  /dev/snd/pcmC1D0p:   wolf       3380 F...m pulseaudio
+  /dev/snd/controlC0:  wolf       3380 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jan 16 14:43:03 2019
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2018-03-07 (315 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_Card: Audioengine D3 - Audioengine D3
  Symptom_PulseAudioLog:
-  Jan 16 12:18:52 usmanz dbus-daemon[1469]: [system] Activating via systemd: 
service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' 
requested by ':1.32' (uid=121 pid=2077 comm="/usr/bin/pulseaudio --daemonize=no 
")
-  Jan 16 12:18:52 usmanz pulseaudio[2077]: W: [pulseaudio] sink.c: Default and 
alternate sample rates are the same.
+  Jan 16 12:18:52 usmanz dbus-daemon[1469]: [system] Activating via systemd: 
service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' 
requested by ':1.32' (uid=121 pid=2077 comm="/usr/bin/pulseaudio --daemonize=no 
")
+  Jan 16 12:18:52 usmanz pulseaudio[2077]: W: [pulseaudio] sink.c: Default and 
alternate sample rates are the same.
  Symptom_Type: Sound works for a while, then breaks
  Title: [USB-Audio - Audioengine D3, playback] fails after a while
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/04/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.6.3
  dmi.board.name: 0F6P3V
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.6.3:bd11/04/2018:svnDellInc.:pnXPS139370:pvr:rvnDellInc.:rn0F6P3V:rvrA00:cvnDellInc.:ct10:cvr:
  dmi.product.family: XPS
  dmi.product.name: XPS 13 9370
  dmi.product.sku: 07E6
  dmi.sys.vendor: Dell Inc.

** Description changed:

  USB DAC stops playing sound after a second.
+ I had problem with kernel 4.15. 
+ So, I tried upgrading to 4.19 but still issue persists. 
+ I think, we might need to add it to sound/usb/quirks.c
+ 
  I see following in dmesg
  
  [ 5937.978117] usb 1-1.4.2: USB disconnect, device number 16
  [ 5955.721597] usb 1-1.4.1: new full-speed USB device number 17 using xhci_hcd
  [ 5956.302910] usb 1-1.4.1: New USB device found, idVendor=2912, 
idProduct=120b, bcdDevice= 1.0c
  [ 5956.302917] usb 1-1.4.1: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
  [ 5956.302921] usb 1-1.4.1: Product: Audioengine D3
  [ 5956.302926] usb 1-1.4.1: Manufacturer: Audioengine
  [ 5956.302929] usb 1-1.4.1: SerialNumber: Audioengine
  [ 5956.320621] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
  [ 5956.920844] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
  [ 5956.938929] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
  
  And lsusb -v has following entry for the device.
  
  Bus 001 Device 017: ID 2912:120b
  Couldn't open device, some information will be missing
  Device Descriptor:
    bLength                18
    bDescriptorType         1
    bcdUSB               1.00
    bDeviceClass            0 (Defined at Interface level)
    bDeviceSubClass         0
    bDeviceProtocol         0
    bMaxPacketSize0         8
    idVendor           0x2912
    idProduct          0x120b
    bcdDevice            1.0c
    iManufacturer           1
    iProduct                2
    iSerial                 3
    bNumConfigurations      1
    Configuration Descriptor:
      bLength                 9
      bDescriptorType         2
      wTotalLength          131
      bNumInterfaces          2
      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                 9
          bDescriptorType        36
          bDescriptorSubtype      1 (HEADER)
          bcdADC               1.00
          wTotalLength           43
          bInCollection           1
          baInterfaceNr( 0)       1
        AudioControl Interface Descriptor:
          bLength                12
          bDescriptorType        36
          bDescriptorSubtype      2 (INPUT_TERMINAL)
          bTerminalID             5
          wTerminalType      0x0101 USB Streaming
          bAssocTerminal          0
          bNrChannels             2
          wChannelConfig     0x0003
            Left Front (L)
            Right Front (R)
          iChannelNames           0
          iTerminal               0
        AudioControl Interface Descriptor:
          bLength                13
          bDescriptorType        36
          bDescriptorSubtype      6 (FEATURE_UNIT)
          bUnitID                 7
          bSourceID               5
          bControlSize            2
          bmaControls( 0)      0x01
          bmaControls( 0)      0x00
            Mute Control
          bmaControls( 1)      0x02
          bmaControls( 1)      0x00
            Volume Control
          bmaControls( 2)      0x02
          bmaControls( 2)      0x00
            Volume Control
          iFeature                0
        AudioControl Interface Descriptor:
          bLength                 9
          bDescriptorType        36
          bDescriptorSubtype      3 (OUTPUT_TERMINAL)
          bTerminalID             8
          wTerminalType      0x0301 Speaker
          bAssocTerminal          0
          bSourceID               7
          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           2
        bInterfaceClass         1 Audio
        bInterfaceSubClass      2 Streaming
        bInterfaceProtocol      0
        iInterface              0
        AudioStreaming Interface Descriptor:
          bLength                 7
          bDescriptorType        36
          bDescriptorSubtype      1 (AS_GENERAL)
          bTerminalLink           5
          bDelay                  1 frames
          wFormatTag              1 PCM
        AudioStreaming Interface Descriptor:
          bLength                20
          bDescriptorType        36
          bDescriptorSubtype      2 (FORMAT_TYPE)
          bFormatType             1 (FORMAT_TYPE_I)
          bNrChannels             2
          bSubframeSize           3
          bBitResolution         24
          bSamFreqType            4 Discrete
          tSamFreq[ 0]        44100
          tSamFreq[ 1]        48000
          tSamFreq[ 2]        88200
          tSamFreq[ 3]        96000
        Endpoint Descriptor:
          bLength                 9
          bDescriptorType         5
          bEndpointAddress     0x01  EP 1 OUT
          bmAttributes            5
            Transfer Type            Isochronous
            Synch Type               Asynchronous
            Usage Type               Data
          wMaxPacketSize     0x024c  1x 588 bytes
          bInterval               1
          bRefresh                0
          bSynchAddress         131
          AudioControl Endpoint Descriptor:
            bLength                 7
            bDescriptorType        37
            bDescriptorSubtype      1 (EP_GENERAL)
            bmAttributes         0x01
              Sampling Frequency
            bLockDelayUnits         0 Undefined
            wLockDelay              0 Undefined
        Endpoint Descriptor:
          bLength                 9
          bDescriptorType         5
          bEndpointAddress     0x83  EP 3 IN
          bmAttributes            1
            Transfer Type            Isochronous
            Synch Type               None
            Usage Type               Data
          wMaxPacketSize     0x0003  1x 3 bytes
          bInterval               1
          bRefresh                5
          bSynchAddress           0
  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  Uname: Linux 4.19.15-041915-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  wolf       3380 F.... pulseaudio
   /dev/snd/pcmC1D0p:   wolf       3380 F...m pulseaudio
   /dev/snd/controlC0:  wolf       3380 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jan 16 14:43:03 2019
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2018-03-07 (315 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_Card: Audioengine D3 - Audioengine D3
  Symptom_PulseAudioLog:
   Jan 16 12:18:52 usmanz dbus-daemon[1469]: [system] Activating via systemd: 
service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' 
requested by ':1.32' (uid=121 pid=2077 comm="/usr/bin/pulseaudio --daemonize=no 
")
   Jan 16 12:18:52 usmanz pulseaudio[2077]: W: [pulseaudio] sink.c: Default and 
alternate sample rates are the same.
  Symptom_Type: Sound works for a while, then breaks
  Title: [USB-Audio - Audioengine D3, playback] fails after a while
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/04/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.6.3
  dmi.board.name: 0F6P3V
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.6.3:bd11/04/2018:svnDellInc.:pnXPS139370:pvr:rvnDellInc.:rn0F6P3V:rvrA00:cvnDellInc.:ct10:cvr:
  dmi.product.family: XPS
  dmi.product.name: XPS 13 9370
  dmi.product.sku: 07E6
  dmi.sys.vendor: Dell Inc.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1811999

Title:
  [USB-Audio - Audioengine D3, playback] fails after a while (a second)

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  USB DAC stops playing sound after a second.
  I had problem with kernel 4.15. 
  So, I tried upgrading to 4.19 but still issue persists. 
  I think, we might need to add it to sound/usb/quirks.c

  I see following in dmesg

  [ 5937.978117] usb 1-1.4.2: USB disconnect, device number 16
  [ 5955.721597] usb 1-1.4.1: new full-speed USB device number 17 using xhci_hcd
  [ 5956.302910] usb 1-1.4.1: New USB device found, idVendor=2912, 
idProduct=120b, bcdDevice= 1.0c
  [ 5956.302917] usb 1-1.4.1: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
  [ 5956.302921] usb 1-1.4.1: Product: Audioengine D3
  [ 5956.302926] usb 1-1.4.1: Manufacturer: Audioengine
  [ 5956.302929] usb 1-1.4.1: SerialNumber: Audioengine
  [ 5956.320621] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
  [ 5956.920844] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1
  [ 5956.938929] usb 1-1.4.1: 1:1: cannot get freq at ep 0x1

  And lsusb -v has following entry for the device.

  Bus 001 Device 017: ID 2912:120b
  Couldn't open device, some information will be missing
  Device Descriptor:
    bLength                18
    bDescriptorType         1
    bcdUSB               1.00
    bDeviceClass            0 (Defined at Interface level)
    bDeviceSubClass         0
    bDeviceProtocol         0
    bMaxPacketSize0         8
    idVendor           0x2912
    idProduct          0x120b
    bcdDevice            1.0c
    iManufacturer           1
    iProduct                2
    iSerial                 3
    bNumConfigurations      1
    Configuration Descriptor:
      bLength                 9
      bDescriptorType         2
      wTotalLength          131
      bNumInterfaces          2
      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                 9
          bDescriptorType        36
          bDescriptorSubtype      1 (HEADER)
          bcdADC               1.00
          wTotalLength           43
          bInCollection           1
          baInterfaceNr( 0)       1
        AudioControl Interface Descriptor:
          bLength                12
          bDescriptorType        36
          bDescriptorSubtype      2 (INPUT_TERMINAL)
          bTerminalID             5
          wTerminalType      0x0101 USB Streaming
          bAssocTerminal          0
          bNrChannels             2
          wChannelConfig     0x0003
            Left Front (L)
            Right Front (R)
          iChannelNames           0
          iTerminal               0
        AudioControl Interface Descriptor:
          bLength                13
          bDescriptorType        36
          bDescriptorSubtype      6 (FEATURE_UNIT)
          bUnitID                 7
          bSourceID               5
          bControlSize            2
          bmaControls( 0)      0x01
          bmaControls( 0)      0x00
            Mute Control
          bmaControls( 1)      0x02
          bmaControls( 1)      0x00
            Volume Control
          bmaControls( 2)      0x02
          bmaControls( 2)      0x00
            Volume Control
          iFeature                0
        AudioControl Interface Descriptor:
          bLength                 9
          bDescriptorType        36
          bDescriptorSubtype      3 (OUTPUT_TERMINAL)
          bTerminalID             8
          wTerminalType      0x0301 Speaker
          bAssocTerminal          0
          bSourceID               7
          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           2
        bInterfaceClass         1 Audio
        bInterfaceSubClass      2 Streaming
        bInterfaceProtocol      0
        iInterface              0
        AudioStreaming Interface Descriptor:
          bLength                 7
          bDescriptorType        36
          bDescriptorSubtype      1 (AS_GENERAL)
          bTerminalLink           5
          bDelay                  1 frames
          wFormatTag              1 PCM
        AudioStreaming Interface Descriptor:
          bLength                20
          bDescriptorType        36
          bDescriptorSubtype      2 (FORMAT_TYPE)
          bFormatType             1 (FORMAT_TYPE_I)
          bNrChannels             2
          bSubframeSize           3
          bBitResolution         24
          bSamFreqType            4 Discrete
          tSamFreq[ 0]        44100
          tSamFreq[ 1]        48000
          tSamFreq[ 2]        88200
          tSamFreq[ 3]        96000
        Endpoint Descriptor:
          bLength                 9
          bDescriptorType         5
          bEndpointAddress     0x01  EP 1 OUT
          bmAttributes            5
            Transfer Type            Isochronous
            Synch Type               Asynchronous
            Usage Type               Data
          wMaxPacketSize     0x024c  1x 588 bytes
          bInterval               1
          bRefresh                0
          bSynchAddress         131
          AudioControl Endpoint Descriptor:
            bLength                 7
            bDescriptorType        37
            bDescriptorSubtype      1 (EP_GENERAL)
            bmAttributes         0x01
              Sampling Frequency
            bLockDelayUnits         0 Undefined
            wLockDelay              0 Undefined
        Endpoint Descriptor:
          bLength                 9
          bDescriptorType         5
          bEndpointAddress     0x83  EP 3 IN
          bmAttributes            1
            Transfer Type            Isochronous
            Synch Type               None
            Usage Type               Data
          wMaxPacketSize     0x0003  1x 3 bytes
          bInterval               1
          bRefresh                5
          bSynchAddress           0

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  Uname: Linux 4.19.15-041915-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  wolf       3380 F.... pulseaudio
   /dev/snd/pcmC1D0p:   wolf       3380 F...m pulseaudio
   /dev/snd/controlC0:  wolf       3380 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jan 16 14:43:03 2019
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2018-03-07 (315 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_Card: Audioengine D3 - Audioengine D3
  Symptom_PulseAudioLog:
   Jan 16 12:18:52 usmanz dbus-daemon[1469]: [system] Activating via systemd: 
service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' 
requested by ':1.32' (uid=121 pid=2077 comm="/usr/bin/pulseaudio --daemonize=no 
")
   Jan 16 12:18:52 usmanz pulseaudio[2077]: W: [pulseaudio] sink.c: Default and 
alternate sample rates are the same.
  Symptom_Type: Sound works for a while, then breaks
  Title: [USB-Audio - Audioengine D3, playback] fails after a while
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/04/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.6.3
  dmi.board.name: 0F6P3V
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.6.3:bd11/04/2018:svnDellInc.:pnXPS139370:pvr:rvnDellInc.:rn0F6P3V:rvrA00:cvnDellInc.:ct10:cvr:
  dmi.product.family: XPS
  dmi.product.name: XPS 13 9370
  dmi.product.sku: 07E6
  dmi.sys.vendor: Dell Inc.

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