No movement starting from below softbutton RBT-value

Joschi Brauchle joschi.brauchle at
Fri Jun 13 02:06:04 PDT 2014

On 06/13/2014 06:11 AM, Peter Hutterer wrote:
> On Wed, Jun 11, 2014 at 10:36:29AM +0200, Joschi Brauchle wrote:
>> Dear all,
>> I am testing synaptics driver 1.8 on a Lenovo Thinkpad T440s using openSUSE
>> 13.1 and kernel 3.11 (without min-max fixes for this Clickpad so far).
>> Thanks a lot for making the Clickpads usable!
>> This is part of my 50-synaptics.conf:
>> -------------------------------------
>> # This option enables the bottom right corner to be a right button on
>> clickpads
>> # and the right and middle top areas to be right / middle buttons on
>> clickpads
>> # with a top button area.
>> # This option is only interpreted by clickpads.
>> Section "InputClass"
>>          Identifier "Default clickpad buttons"
>>          MatchDriver "synaptics"
>>          Option "SoftButtonAreas" "3068 0 4326 0 0 0 0 0"
>> 	#                        ~50%    ~82%
>> EndSection
>> -------------------------------------

Quick sanity check: Is the above configuration correct to achieve _only_ 
a right button click in the lower right corner and nothing else?

>> I have the problem that there is *no cursor motion* at all initiated from
>> the bottom part (looks like for Y > RBT=4326, but any X) of the clickpad at
>> all, i.e., not confined to the defined softbuttonarea!
>> This seems like a bug...?
>> Also, as a related question, is there a way to *allow* movement to start in
>> defined softbuttonareas?
> the code ignores movement starting inside the button area and any moves
> _within_ the button areas, but once you leave that area movement
> should be back to normal.

What I am getting is that movement is ignored starting below a certain 
horizonal line (strongly suspecing y>RBT=4326). The x position of the 
start of the movement does not matter. Hence it is _not_ confined to the 
right button area I am trying to achieve. Once I move above this 
horizontal line, movement starts and behaves normal.

> see synaptics.c:HandleState, line 3117 or so, where the "ignore motion
> *starting* inside softbutton areas" comment is. If that doesn't work for you
> then here is either some weird HW issue or there is a bug. Are you on
> synaptics 1.7.x or 1.8?

I'm on 1.8.


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