On 2019-04-27, Levente <leventeatt...@protonmail.com> wrote: > The headphone in question is the Platronics RIG 500 HD, which connects > through the USB port (instead of 3.5mm jacks).
> mixerctl output is provided below along with dmesg. Your headphones, which are really a USB audio adapter with attached headphones, are a separate audio device. Here are the relevant parts from your dmesg: > audio0 at azalia0 > ppb0 at pci0 dev 28 function 0 "Intel 6 Series PCIE" rev 0xb4: msi > pci1 at ppb0 bus 2 That's the built-in azalia(4) audio of the laptop that supplies the speakers and the headphone jack. > uaudio0 at uhub3 port 2 configuration 1 interface 1 "Plantronics Plantronics > HD1" rev 2.00/1.14 addr 3 > uaudio0: class v1, full-speed, sync, channels: 2 play, 2 rec, 9 ctls > audio1 at uaudio0 > uhidev0 at uhub3 port 2 configuration 1 interface 3 "Plantronics Plantronics > HD1" rev 2.00/1.14 addr 3 > uhidev0: iclass 3/0, 1 report id > uhid0 at uhidev0 reportid 1: input=15, output=15, feature=0 And these are your uaudio(4) headphones. By default, mixerctl accesses /dev/mixer -> /dev/mixer0, which is the built-in audio. You can access the mixer associated with your USB headphones by choosing the appropriate device: $ mixerctl -f /dev/mixer1 outputs.play=0,0 outputs.play_loud=on outputs.play_mute=off record.enable=sysctl However, as in this example, I think you will only get a few generic controls. It is my theoretical understanding that USB audio gadgets typically come with a uhid(4) device, as does yours above, and you would use usbhidctl(1) to list and manipulate the available controls. In practice, I only get some variant of usbhidctl: USB_GET_REPORT (probably not supported by device): Input/output error when I try this. So either I'm mistaken or there is a problem somewhere. -- Christian "naddy" Weisgerber na...@mips.inka.de
