Call for help: Testing headset buttons

flohack

@povoq Well headset audio should work for music with any headset (wired, BT) but call audio seems to be broken for BT.

poVoq

@flohack Well, I was surprised as "wired" as in headphone jack is completly different from USB headsets.

flohack

@povoq Ohh I see. That would be new, that USB devices work

CiberSheep

Oh, I didn't understand I could test wired ones
I have ones of those white, hard ones with 3 buttons, vol+, vol- and white button:

Select the device event number [0-5]: 4
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x0 product 0x0 version 0x0
Input device name: "ACCDET"
[...]
Properties:
Testing ... (interrupt to exit)
Event: time 1620815706.095935, type 1 (EV_KEY), code 164 (KEY_PLAYPAUSE), value 1
Event: time 1620815706.095935, type 1 (EV_KEY), code 164 (KEY_PLAYPAUSE), value 0

Only white central button works, not the volume ones

rik

Nexus 5, RC Channel (2021-W18), wired headset w/ play/pause, volume +, volume - buttons:

phablet@ubuntu-phablet:~$ sudo evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:	qpnp_pon
/dev/input/event1:	touch_dev
/dev/input/event2:	gpio-keys
/dev/input/event3:	hs_detect
/dev/input/event4:	msm8974-taiko-mtp-snd-card Button Jack
/dev/input/event5:	msm8974-taiko-mtp-snd-card Headset Jack
Select the device event number [0-5]: 3
Input driver version is 1.0.1
Input device ID: bus 0x0 vendor 0x1 product 0x1 version 0x1
Input device name: "hs_detect"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 114 (KEY_VOLUMEDOWN)
    Event code 115 (KEY_VOLUMEUP)
    Event code 226 (KEY_MEDIA)
  Event type 5 (EV_SW)
    Event code 2 (SW_HEADPHONE_INSERT) state 1
    Event code 4 (SW_MICROPHONE_INSERT) state 1
Properties:
Testing ... (interrupt to exit)
Event: time 439671.235176, type 1 (EV_KEY), code 226 (KEY_MEDIA), value 1
Event: time 439671.235866, -------------- SYN_REPORT ------------
Event: time 439671.400194, type 1 (EV_KEY), code 226 (KEY_MEDIA), value 0
Event: time 439671.400336, -------------- SYN_REPORT ------------

So the volume + and volume - buttons are not detected, but the play / pause button is detected (correctly) as KEY_MEDIA. However, pressing it 1 time gives 2 events, both the value 1 and the value 0 entries above are from a single key press.

rik

@kugiigi this means the device you are inspecting isn't associated with your headset (or it isn't detecting any button presses). Try again with another device selected. If it is a bluetooth device and you have selected the correct device (by mac address for bluetooth) then I think that means unfortunately button detection isn't working for that device. Can you try other bluetooth devices and / or other wired headsets?

UPDATE: I tried with 2 bluetooth devices and got no detected events either.....

flohack

@rik Yeah the 2 events are okay, you could have different functions for a long and a short press, so thats why it needs to send press and release.

rik

Nexus 5, RC Channel (2021-W18), 2 bluetooth headsets (Mpow M30 earbuds, Anker Sound Core Mini speaker): no events detected when pressing play/pause, volume buttons but sound does work to both devices