[PLUG] Progress toward switching the touchpad on and off in Xfce

[Denis Heidtmann]

Fn F3 is the toggle for the touchpad in Gnome.  In Xfce most of the
function keys work as expected except for Fn F3.  Initially on booting
synclient reports TouchpadOff=1 even though the touchpad is functional.
 Subsequently I can turn it on and off using synclient TouchpadOff=0 and
synclient TouchpadOff=1 respectively, and synclient properly reports the
status thereafter.

In a text console, showkey -s: 0x74 0xf4

xev reports on pressing Fn F3:

KeyPress event, serial 34, synthetic NO, window 0x3000001,
    root 0xab, subw 0x3000002, time 3489713, (44,47), root:(672,258),
    state 0x0, keycode 199 (keysym 0x1008ffa9, XF86TouchpadToggle),
same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False

KeyRelease event, serial 34, synthetic NO, window 0x3000001,
    root 0xab, subw 0x3000002, time 3489713, (44,47), root:(672,258),
    state 0x0, keycode 199 (keysym 0x1008ffa9, XF86TouchpadToggle),
same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False

I note that this reports the name XF86TouchpadToggle, yet it does nothing
detectable.

I suspect that something has blocked or changed the function.

I wonder if anybody has ideas on what might be broken.  Alternatively a
script could capture the keypress and do the switching.  (I found such a
script on the web.)  I would prefer to fix what is broken just for the
satisfaction.

-Denis