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[Adam Lee <adam.lee@xxxxxxxxxxxxx>]

patch has been submitted to kernel-team and stable@vger

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https://bugs.launchpad.net/bugs/1400215

Title:
  Atheros BT devices(ath3k) fail to work on USB3.0 buses

Status in HWE Next Project:
  In Progress
Status in linux package in Ubuntu:
  In Progress

Bug description:
  Atheros BT devices(ath3k) fail to work on USB3.0 buses, but work well
  on USB 2.0

    1. BT devices will disappear from USB3.0 buses.
    2. BT devices can be found on USB3.0 buses, but can not be found by hciconfig.
    3. There are FW loading error messages in dmesg with USB3.0.

  $ dmesg | grep Blu
  [ 13.996701] Bluetooth: Core ver 2.19
  [ 13.996716] Bluetooth: HCI device and connection manager initialized
  [ 13.996722] Bluetooth: HCI socket layer initialized
  [ 13.996723] Bluetooth: L2CAP socket layer initialized
  [ 13.996729] Bluetooth: SCO socket layer initialized
  [ 15.763696] Bluetooth: RFCOMM TTY layer initialized
  [ 15.763705] Bluetooth: RFCOMM socket layer initialized
  [ 15.763709] Bluetooth: RFCOMM ver 1.11
  [ 15.772693] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
  [ 15.772696] Bluetooth: BNEP filters: protocol multicast
  [ 15.772703] Bluetooth: BNEP socket layer initialized
  [ 17.378235] Bluetooth: Error in firmware loading err = -110,len = 448, size = 1496
  [ 17.378242] Bluetooth: Loading sysconfig file failed

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