Arch Linux

AkechiShiro

Member

Registered: 2017-01-22

Posts: 6

Bluetooth Headset Sony WH1000-XM3 writes 428u when pressing Play/Pause

Hi,

I had a look at the ArchWiki, more precisely at MPRIS page and it is said that the BT headset Sony WH1000-XM3 is capable of using AVCRP to kind of send keycodes to the computer (or at least that's how I understood it worked kinda).

I've launched xev to see what do these resolve to, I've seen XF86AudioPlayPause, XF86AudioPrev, XF86AudioNext. 

My issue is when I press the Play/Pause button of the BT headset, the song played by Chromium (triggers a hotkey binding in my i3 configuration which calls "exec playerctl play-pause").

So let's suppose I'm playing a song (in Chromium):

Press Play/Pause -> XF86AudioPlayPause -> playerctl -> music on Chromium pauses.

Press again Play/Pause -> writes into terminal 426u which looks like a very weird character (in vim) no idea what is that but it doesn't display correctly under Chromium with my current set of fonts, so I took a screenshot of it -> .

I can reproduce the issue reliably because the music never plays back again, even if xev shows it received the correct KeyPress event.

Here is the exact output of xev -event keyboard

> xev -event keyboard
Outer window is 0xa00001, inner window is 0xa00002

KeymapNotify event, serial 24, synthetic NO, window 0x0,
    keys:  87  0   0   0   16  0   0   0   0   0   0   0   0   0   0   0   
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   

KeyRelease event, serial 25, synthetic NO, window 0xa00001,
    root 0x6d5, subw 0x0, time 94050801, (-246,761), root:(723,785),
    state 0x0, keycode 36 (keysym 0xff0d, Return), same_screen YES,
"   XLookupString gives 1 bytes: (0d) "
    XFilterEvent returns: False

MappingNotify event, serial 28, synthetic NO, window 0x0,
    request MappingKeyboard, first_keycode 8, count 248

KeyPress event, serial 28, synthetic NO, window 0xa00001,
    root 0x6d5, subw 0x0, time 94052184, (-246,761), root:(723,785),
    state 0x0, keycode 208 (keysym 0x1008ff14, XF86AudioPlay), same_screen YES,
    XKeysymToKeycode returns keycode: 172
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyRelease event, serial 29, synthetic NO, window 0xa00001,
    root 0x6d5, subw 0x0, time 94052194, (-246,761), root:(723,785),
    state 0x0, keycode 208 (keysym 0x1008ff14, XF86AudioPlay), same_screen YES,
    XKeysymToKeycode returns keycode: 172
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False 

MappingNotify event, serial 29, synthetic NO, window 0x0,
    request MappingKeyboard, first_keycode 8, count 248

# Here I pressed left CTRL
KeyPress event, serial 29, synthetic NO, window 0xa00001,
    root 0x6d5, subw 0x0, time 94053201, (-246,761), root:(723,785),
    state 0x0, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False