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Date:      Sun, 28 Aug 2016 17:33:11 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 212219] psm device works until reboot or xorg restart
Message-ID:  <bug-212219-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212219

            Bug ID: 212219
           Summary: psm device works until reboot or xorg restart
           Product: Base System
           Version: 11.0-RC1
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: bsd@abinet.ru

I have very strange problem with Dell XPS 13 Laptop (Skylake version). While
almost works flawlessly, touchpad has issue with hw.psm.synaptics_support=
=3D1

It works only ones! I mean, the first time I add synaptics support and boot
xorg - cursor moves, button clicks. After I restart xorg - buttons become
unresponsive. button2 event is not registered anymore, button1 event regist=
ered
maybe 1 time for 10 taps and it can stick in pressed state, leaving touchpad
completely unusable.=20

I recompiled kernel with psm_debug flag =3D 1 and noticed nothing suspiciou=
s. To
workaround the issue I must enable-disable device with xinput.=20
The interesting part is that on enable phase the system hangs until I tap t=
he
touchpad.=20

I tried linux from pen drive - touchpad works, so this is not a hardware
problem.

synaptics driver has the same problem, however it survives xorg restart.
Touchpad becomes broken after reboot, in broken state Xorg.log is being rap=
idly
filled with synaptics driver attached to psm0 device - like driver attaches=
 to
device in endless loop.

I have no idea what information provide - the problem looks completely insa=
ne
and unique.=20

CURRENT has the same problem.

--=20
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