Device buttons get released when keyboard keys are pressed

[docelic]

Hey,

As discussed on IRC:

Device: SpaceMouse Enterprise
Spacenav components compiled from today's git source.
Daemon recognizes the device, config program works (i.e. setting LED, watching axes and button presses works fine).

I tried mapping 3 buttons to keys: Tab, Shift, and Control, while using XTEST.

In programs, Tab works fine (like a tab does on a keyboard).
But Shift and Ctrl on the device appear to be released too early, so e.g. Ctrl+c doesn't send term, and/or Shift+a doesn't result in uppercase A. As seen from the logs below, Shift_L release event gets triggered when 'a' is pressed on the keyboard, causing 'a' to be seen without shift.

Here are some logs from spacenavd and from xev:

Spacenavd log:

sudo /usr/local/bin/spacenavd -d -v 
Spacenav daemon v1.2-2-gd186c5d
reading config file: /etc/spnavrc
found usb device [256f:c633]: "3Dconnexion SpaceMouse Enterprise" (/dev/input/event1) 
adding device (id: 0).
device name: 3Dconnexion SpaceMouse Enterprise
  Number of axes: 6 (6a 0r)
Device 256f:c633 reports 255 buttons before disjointed button remapping
  Number of buttons: 31 (evdev offset: 256)
  Axis 0 value range: -350 - 350 (fuzz: 0)
  Axis 1 value range: -350 - 350 (fuzz: 0)
  Axis 2 value range: -350 - 350 (fuzz: 0)
  Axis 3 value range: -350 - 350 (fuzz: 0)
  Axis 4 value range: -350 - 350 (fuzz: 0)
  Axis 5 value range: -350 - 350 (fuzz: 0)
using device: 3Dconnexion SpaceMouse Enterprise (/dev/input/event1)
  device flags: swap y-z invert y-z
trying to open X11 display ":0"
   XAUTHORITY=/root/.Xauthority
Using XTEST to send key events
mapping ``Shift_L'' to keysym 65505
mapping ``Control_L'' to keysym 65507

Pressing Shift+a on the keyboard produces the following xev log:

KeyPress event, serial 54, synthetic NO, window 0x1e00001,
    root 0x3aa, subw 0x0, time 341907179, (158,112), root:(912,546),
    state 0x10, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyPress event, serial 54, synthetic NO, window 0x1e00001,
    root 0x3aa, subw 0x0, time 341909651, (158,112), root:(912,546),
    state 0x11, keycode 38 (keysym 0x41, A), same_screen YES,
    XLookupString gives 1 bytes: (41) "A"
    XmbLookupString gives 1 bytes: (41) "A"
    XFilterEvent returns: False

KeyRelease event, serial 54, synthetic NO, window 0x1e00001,
    root 0x3aa, subw 0x0, time 341909745, (158,112), root:(912,546),
    state 0x11, keycode 38 (keysym 0x41, A), same_screen YES,
    XLookupString gives 1 bytes: (41) "A"
    XFilterEvent returns: False

KeyRelease event, serial 54, synthetic NO, window 0x1e00001,
    root 0x3aa, subw 0x0, time 341910517, (158,112), root:(912,546),
    state 0x11, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False

Pressing Shift on the device and a on the keyboard produces the following xev log:

# Device button press+hold results in:

MappingNotify event, serial 54, synthetic NO, window 0x0,
    request MappingKeyboard, first_keycode 8, count 248

KeyPress event, serial 54, synthetic NO, window 0x1e00001,
    root 0x3aa, subw 0x0, time 341962743, (134,88), root:(888,522),
    state 0x10, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

# Pressing and releasing 'a' on keyboard results in:

KeyRelease event, serial 55, synthetic NO, window 0x1e00001,
    root 0x3aa, subw 0x0, time 341963347, (134,88), root:(888,522),
    state 0x11, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyPress event, serial 55, synthetic NO, window 0x1e00001,
    root 0x3aa, subw 0x0, time 341963347, (134,88), root:(888,522),
    state 0x10, keycode 38 (keysym 0x61, a), same_screen YES,
    XLookupString gives 1 bytes: (61) "a"
    XmbLookupString gives 1 bytes: (61) "a"
    XFilterEvent returns: False

KeyRelease event, serial 55, synthetic NO, window 0x1e00001,
    root 0x3aa, subw 0x0, time 341963425, (134,88), root:(888,522),
    state 0x10, keycode 38 (keysym 0x61, a), same_screen YES,
    XLookupString gives 1 bytes: (61) "a"
    XFilterEvent returns: False

# And finally releasing the button on the device results in:

MappingNotify event, serial 55, synthetic NO, window 0x0,
    request MappingKeyboard, first_keycode 8, count 248