On Sat, 2016-08-20 at 14:14 +0200, Georg Chini wrote: > On 20.08.2016 13:40, Tanu Kaskinen wrote: > > > > On Fri, 2016-08-19 at 13:57 +0700, Hieu Le wrote: > > > > > > I'm trying to get a SPK-ProHT Bluetooth speaker and headset working on an > > > embedded Linux board but when I failed to use pacmd set-card-profile to > > > choose headset_head_unit profile. Checking pulseaudio lof file, it seems > > > backend-native cannot connect to SCO socket. Sorry this is a very long mail > > > due to debug logs attached > > The problem seems to be that connect() fails with "Protocol not > > supported". This problem has been reported a few times, but I don't > > know how to fix it. It seems like missing functionality in the kernel, > > so my guess is that you're missing some bluetooth related driver. If > > you get it working somehow, please report back how you did it. > > > > The bluez mailing list might be able to help better. > > > Hi, > > I remember there was a kernel problem which prevented some > headsets from working. The bug was introduced in 3.12 and was > fixed in 3.18. > See also > https://lists.freedesktop.org/archives/pulseaudio-discuss/2015-March/023298.html Thanks! I added this bit of information here: https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Bluetooth/ -- Tanu