Synaptics clickpad release events

[Peter Hutterer]

On Tue, Oct 28, 2014 at 03:16:59PM -0500, ross wrote:
> Hello all,
> 
> I have a T440s clickpad that's behaving badly.  When I click the pad, a
> ButtonPress is sent as soon as I click.  When I release, no ButtonRelease is
> sent until I actually remove my finger from the touchpad surface.  So most
> clicks end up as drags - very annoying.  I've tried various options with
> synclient, but according to xev, nothing changes when the release event is
> generated.
> 
> The weird thing: a different T440s (different sku) with the same model
> clickpad, same software, and same config behaves normally - a ButtonRelease
> is sent as soon as the click is over, no need to remove the finger.
> 
> How can I get the first to behave like the second?  I'm using synaptics
> 1.8.1 from Debian jessie, with Xserver 1.16.1, and Linux kernel 3.16.5.

try dropping the options from your conf and see if any of them make a
difference, specifically the Palm options.

if it doesn't work, record your device with evemu-record and file a bug with
the recording attached. this allows us to reproduce the issue.
http://www.freedesktop.org/wiki/Evemu

Cheers,
   Peter

> In /etc/X11/xorg.conf.d/50-synaptics.conf I have the following config:
> 
> Section "InputClass"
>         Identifier "Default clickpad buttons"
>         MatchDriver "synaptics"
>         Option "HasSecondarySoftButtons" "1"
>         Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
>         Option "SecondarySoftButtonAreas" "58% 0 0 15% 42% 58% 0 15%"
>         Option "VertHysteresis" "30"
>         Option "HorizHysteresis" "30"
>         Option "PalmDetect" "1"
>         Option "PalmMinWidth" "5"
>         Option "PalmMinZ" "40"
>         Option "VertTwoFingerScroll" "0"
>         Option "HorizTwoFingerScroll" "0"
>         Option "VertEdgeScroll" "1"
>         Option "VertScrollDelta" "25"
>         Option "CoastingSpeed" "0"
> EndSection
> 
> Thanks for the help,
> Ross
> 
> PS - please keep me CCed, as I don't subscribe.  Thanks!
>