I am running ubuntu 14.04 (64 bit) on Lenovo B480 laptop.
lsusb lists bluetooth chip as follows:-
Bus 001 Device 009: ID 0a5c:21f4 Broadcom Corp.
Output of sudo lspci -vnn -d 14e4:
02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)
Subsystem: Broadcom Corporation Device [14e4:0608]
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at 90500000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [58] Vendor Specific Information: Len=78 <?>
Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [d0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
Capabilities: [160] Device Serial Number 00-00-43-ff-ff-9c-74-e5
Capabilities: [16c] Power Budgeting <?>
Kernel driver in use: wl
kernel logs have these suspicious messages whenever I turn on bluetooth-
[ 7574.775102] usb 1-1.4: new full-speed USB device number 9 using ehci-pci
[ 7574.871157] usb 1-1.4: New USB device found, idVendor=0a5c, idProduct=21f4
[ 7574.871169] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 7574.871175] usb 1-1.4: Product: BCM20702A0
[ 7574.871179] usb 1-1.4: Manufacturer: Broadcom Corp
[ 7574.871184] usb 1-1.4: SerialNumber: 446D57C1EF66
[ 7574.872370] usb 1-1.4: Direct firmware load failed with error -2
[ 7574.872374] usb 1-1.4: Falling back to user helper
[ 7574.874053] Bluetooth: can't load firmware, may not work correctly
My problem is that music playback on bluetooth headset is too choppy and the headset never stays connected for more than 2-3 mins. Coupled with crap UI that can't deal with repeated on/off & connection/disconnection scenarios, this problem makes bluetooth unusable.
I have tested the same headset with Nexus 5 and music playback was good. So any defect in headset is ruled out.
I don't mind the problems in UI very much but I wish I could get A2DP streaming going on properly.
I have read this post - How to get a consistent bluetooth audio playback? The solution suggested there had no effect on my problem.
Can anyone suggest how to fix this?
