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[Bug 1065400] Re: Support for loading Broadcom bluetooth firmware
I have the same issue on a Dell Vostro 3560 with a BCM43142. I'm running
a fresh installation of Ubuntu 14.10
dmesg | grep Bluetooth gives
[ 4967.683179] Bluetooth: hci0: BCM: patch brcm/BCM43142A0-0a5c-21d7.hcd not found
I don't have a Windows installation I can get files from
Bus 002 Device 005: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
bcmwl-kernel-source is already the newest version
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Support for loading Broadcom bluetooth firmware
Status in linux package in Ubuntu:
Status in linux source package in Precise:
Status in linux source package in Quantal:
Status in linux source package in Raring:
Status in linux source package in Saucy:
Broadcom bluetooth chips require a tool called patchram uploader 
to load firmware. This applies to at least BCM20702 and BCM43142.
Although some of the devices have an OTPROM that contains required
firmware, but it is found that these devices would not have HFP/HSP
support unless a upgraded firmware is loaded via patchram uploader.
This tool requires hci device to do the firmware loading, but this may
cause some race condition between patchram tool and bluetoothd or
something that also works on hci interface.
Also it needs some hooks to make firmware loads after bootup, s3, s4,
rfkill, and device hotplug events. Implement this loader in kernel
module would make things more easier.
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