[pulseaudio-tickets] [Bug 97064] No audio stream from headset in HSP/HFP mode

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97064

Fabian Köster <koesterreich at fastmail.fm> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #21 from Fabian Köster <koesterreich at fastmail.fm> ---
I solved my issue!!

Turned out I needed an extra proprietary piece of software for my Broadcom BT
chipset, which is also not distributed directly from Broadcom *facepalm*.

I was not expecting for any hardware or firmware issues because it was working
just fine fore other BT profiles and Plugable, the vendor of my Bluetooth
Adapter, promotes it with Linux support. But when I looked into dmesg output, I
suddenly saw this line:

hci0: BCM: Patch brcm/BCM20702A1-0a5c-21e8.hcd not found

I googled it and found a blog post from - again - Plugable: [1]

It tells you to download the firmware file from some Amazon server (!?) and put
it into your firmware directory at this location:

/lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd

And it actually works! First tests show that HSP/HFP is now finally working as
expected :)

It is a shame for Broadcom though, that they do not distribute this firmware
over the linux-firmware project [2] like they do with their other firmware
files.

Just for the record (and for SEO) some checksums of the firmware file:

$ md5sum /lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd
7ba1f3084a61a4bcf7b8c8396e8a4201  /lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd
$ sha1sum /lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd
221639ead9313a96dcf89315d25364da12302fef 
/lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd
$ sha256sum /lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd
d699c13fe1e20c068a8a88dbbed49edc12527b0ceeeaac3411e3298573451536 
/lib/firmware/brcm/BCM20702A1-0a5c-21e8.hcd

(In reply to bschaef14 from comment #20)
> For sure if it might help you: WL1837 from TI:
> http://www.ti.com/product/WL1837MOD

It certainly helps distinguishing between similar but not identical bugs.

So I guess my original bug is solved and as Brandon does not see any issue in
PA this report should be closed.

If there will occur new issues within the scope of PA, we should therefore open
new bug reports.

[1]
http://plugable.com/2014/06/23/plugable-usb-bluetooth-adapter-solving-hfphsp-profile-issues-on-linux/
[2] https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git

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