[Bug 241384] Synaptics touchpad not working right under 12.1-RC2

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241384

--- Comment #2 from Joshua Kinard <kumba at gentoo.org> ---
It looks like 12.1-RELEASE fixed this, in a way.  /dev/input/eventX is
populated now, and it took some tweaking of kern.evdev.rcpt_mask to get the
right devices to start recording events.  I also had to make some adjustments
to my xorg.conf file, following some instructions here:
https://lists.freebsd.org/pipermail/freebsd-current/2017-April/065653.html

This leads to a working config block for the Touchpad:

Section "InputDevice"
        Identifier      "Touchpad0"
        Driver          "libinput"
        Option          "Device"                "/dev/input/event3"
        Option          "AccelProfile"          "adaptive"
        Option          "DisableWhileTyping"    "True"
        Option          "MiddleEmulation"       "True"
        Option          "ScrollMethod"          "edge"
        Option          "Tapping"               "True"
        Option          "TappingDrag"           "True"
        Option          "TappingDragLock"       "False"
EndSection


However, a small bug has manifested itself w/ security implications.  I am
noticing that when I type my username and password into the login fields on
slim, that input is apparently being echoed to the virtual terminal that slim
is running on.  This is invisible, however, until you kill X or logout.  For a
brief second, when slim is restarting, both the username and password are
visible in plaintext on the console.  Once slim starts up, they can't be seen
again.

I suspect this laptop being from ~2011 and a bit slow enhances the delay in
slim's restart, allowing one to actually glimpse the echo'ed text.  I don't
recall seeing this when I was using kbd and /dev/psm0 under 12.0-RELEASE.

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