USB-C headphones on OnePlus 6T
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Re: Focal problems - Headphones and time
When I plug USB-C headphones into my OnePlus 6T, they aren't detected by the Music app or the media player. BUT ... I managed to get them working using aplay on the command line. So just wanted to record that here.
First, without headphones plugged in,
aplay -l
lists a bunch of ALSA audio devices (all on the same card), ending in card 0, device 43
Plug in headphones and repeat aplay -l, reveals that the headphones are detected as card 1: Audio [USB Audio]
aplay -Lgives more info about this device and the various ways it can be driven (hw, plughw, usbstream etc), especially the key piece of information:
plughw:Card=Audio,DEV=0
So now,
aplay -D plughw:CARD=Audio,DEV=0 <audio-filename>does the job, and I have music coming through the headphones, yay!
Too loud though, and the volume controls don't work yet on the headphones nor on the phone.
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Further progress, using Pulse Audio, especially pacmd
To switch audio output to the USB headphones:
pacmd load-module module-alsa-sink device=plughw:1,0
Most importantly, to switch back to the speakers when you're finished with headphones:
pacmd set-default-sink 1
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@ancientsounds Have you tried Alsamixer in terminal?
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@MrT10001 Working up to that; I have another problem to overcome first, with Libertine. But many thanks for the suggestion!
... Later ... (having failed to fix the Libertine problem)
YES!
amixer -c 1 sset PCM 70%
makes the volume much more comfortable.
Time for me to learn some more about amixer
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Further progress, using Pulse Audio, especially pacmd
To switch audio output to the USB headphones:
pacmd load-module module-alsa-sink device=plughw:1,0
Most importantly, to switch back to the speakers when you're finished with headphones:
pacmd set-default-sink 1
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A ancientsounds has marked this topic as solved on
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This post is deleted! -
Another experiment with USB audio
Trying to work out how to automatically switch to USB-C when I plug in the headphones (rather than switching manually as previously discussed, by typing on the command line).
pacmd load-module module-udev-detect
works, partly: that is, it will detect the headphones when plugged in, and shows “Usb speakers” when turning the volume up or down. BUT playing music using the Music app doesn't work, i.e. no sound comes out. So manual switching is still necessary when using the Music app.
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@ancientsounds said in USB-C headphones on OnePlus 6T:
Further progress, using Pulse Audio, especially pacmd
To switch audio output to the USB headphones:
pacmd load-module module-alsa-sink device=plughw:1,0
Most importantly, to switch back to the speakers when you're finished with headphones:
pacmd set-default-sink 1
this seems to work on the fp4 too
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@Fuseteam tested on my FP4.
- The switch beetween headphones and speaker is automatic, music playing works well but when I have a call it switches back to phone speaker.
- I have to re-enter this commandline after reboot :
pacmd load-module module-udev-detect
