Hi Dmitry,

On Thu, Aug 20, 2015 at 11:35 PM, Dmitry Torokhov
[off-list ref] wrote:

On Thu, Aug 20, 2015 at 10:50:27PM +0200, Gabor Balla wrote:

[...]

quoted

At some point a new PS/2 mode was introduced by Synaptics, called EWmode. This
can be enabled by setting bit 2 of the mode byte. But previously this bit was
used for 'Disable Gesture', whatever that stands for, and it was reused for
selecting EWmode. Now if plain Wmode is selected, with bit 0 of the mode byte,
than disable gesture is on by default and bit 2 selects EWmode instead.

Reference:
http://www.synaptics.com/sites/default/files/511-000275-01_RevB.pdf

[...]

quoted

A quick fix follows:

[...]

It looks like the patch "direction" is reverted. Also, the presence of
extended capabilities is not the indication that gesture mode should not
be used: in relative mode bit 2 disables gesture reporting, in absolute
mode it enables Extended W-mode.

Does the patch below also work for you?

If I'm not mistaken, the function of bit 2 depends on the state of W mode rather
than absolute vs relative mode. From page 40 of the PDF:

"If the Wmode bit is not set (0), then Gesture is reported and bit 2 refers to
DisGest. (..) When this bit is 1, the Relative mode mouse packet reports the
true physical button states, and the Absolute mode packet’s Gesture bit always
reports as zero."

So it still has a meaning in absolute mode, when Wmode is disabled.
I've tried the patch, it works, but I don't believe it's correct.

Sorry for the reversed patch, I'm not really experienced with making patches.

Regards,
Gabor
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