[ 55.796659] usbcore: registered new interface driver btusb
[ 55.799361] usb 1-4: Direct firmware load for ar3k/AthrBT_0x11020000.dfu failed with error -2
[ 55.799368] Bluetooth: Patch file not found ar3k/AthrBT_0x11020000.dfu
[ 55.799373] Bluetooth: Loading patch file failed
[ 55.799420] ath3k: probe of 1-4:1.0 failed with error -2
[ 55.822336] usbcore: registered new interface driver ath3k
But rather than associate this bug with the PCI device "AR9462" we should probably focus on the USB device "13d3:3393 IMC Networks". Sounds related to bug 1965953.
It looks like the problem is the kernel:
[ 55.796659] usbcore: registered new interface driver btusb 0x11020000. dfu failed with error -2 0x11020000. dfu
[ 55.799361] usb 1-4: Direct firmware load for ar3k/AthrBT_
[ 55.799368] Bluetooth: Patch file not found ar3k/AthrBT_
[ 55.799373] Bluetooth: Loading patch file failed
[ 55.799420] ath3k: probe of 1-4:1.0 failed with error -2
[ 55.822336] usbcore: registered new interface driver ath3k
But rather than associate this bug with the PCI device "AR9462" we should probably focus on the USB device "13d3:3393 IMC Networks". Sounds related to bug 1965953.