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kern/49404: pms0: bad elantech magic (3C 3 0)

>Number:         49404
>Category:       kern
>Synopsis:       pms0: bad elantech magic (3C 3 0)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Nov 20 01:40:00 +0000 2014
>Originator:     Andrew Cagney
>Release:        trunk
NetBSD 7.99.1 (POP) #8: Wed Nov 19 19:54:44 UTC 2014
Samsung 530u laptop with an ElanTex SmartPad I believe if someone has documentation I'm interested

from dmesg with some debugging enabled:

wskbd0 at pckbd0: console keyboard
pms0 at pckbc1 (aux slot)
pms0: bad elantech magic (3C 3 0)
pckbc1: using irq 12 for aux slot
wsmouse0 at pms0 mux 0

While basic functionality does work, there's no ability to do things like turn off gestures such as inadvertently touching the touch-pad while typing being turned into mouse motion / click.

As a starting point, the obvious change - just accept 3c 3 0 as an elantec - didn't work, I suspect the underlying protocol has also changed


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