Hi Clemens, Apologies for my late reply! The mail got lost in my inbox. > What problem? Doesn't the mixer control work correctly? As far as I can tell the mixer works as it should. I was just curious about the meaning of this warning and tried to fix it. Sadly I was not able to find out, which calculations using which parameters are necessary to get a correct value for cval->res. I would be glad, if you could give me some hints. Thanks and best Dennis ----- Ursprüngliche Mail ----- Von: "Clemens Ladisch" <clemens@xxxxxxxxxx> An: "Dennis Kadioglu" <denk@xxxxxxxx>, alsa-devel@xxxxxxxxxxxxxxxx Gesendet: Donnerstag, 7. April 2016 08:47:39 Betreff: Re: Unlikely big volume range Plantronics BT300 Dennis Kadioglu wrote: > when I connect the bluetooth BT300 of my Plantronics Headset I can see the following warning: > > [172855.985539] usb 2-1.3: Warning! Unlikely big volume range (=720), cval->res is probably wrong. > > As far as I understand it, the problem What problem? Doesn't the mixer control work correctly? Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel