[pulseaudio-discuss] bluetooth: problem with old headset

Georg Chini georg at chini.tk
Sun Mar 1 22:41:06 PST 2015

On 23.02.2015 09:06, David Henningsson wrote:
> On 2015-02-21 23:14, Georg Chini wrote:
>> Hello,
>> I have an issue with the native backend (or rather with bluetooth) and
>> my old
>> Plantronics 590 headset. With my new headset (a Plantronics Backbeat 
>> Pro)
>> everything works fine, so I think the basic setup is correct.
>> With the Plantronics 590, the connect() call in bluez5_sco_acquire_cb
>> returns
>> "Protocol not supported". The headset itself is functional, I tested
>> with my mobile.
>> I do not even get it working with Bluez4, same error. Any idea what
>> could be
>> wrong? Some kernel option I am missing?
> I've heard of this, but never seen it myself. I suspect it's a kernel 
> regression, but I'm not sure. Does it work with older kernels? Like, 
> one, two, three years old kernels or such?
I had the chance to test this over the weekend. Works with kernel 3.10.
This was the oldest kernel I still had on my machine, so I'll do some more
investigations to see where exactly it breaks.

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