ubuntu-x-swat team mailing list archive

["T. Dalbo" <576550@xxxxxxxxxxxxxxxxxx>]

I have also encountered this problem, and it is quite annoying.  I enjoy
two finger scroll, right click, etc...  My multi touch gestures also
work fine in Windows, with the driver being able to truly differentiate
between one, two, and three fingers.  This proves that my trackpad
supports true multi touch.

Using some synclient modifications, I can enable two finger emulation.
Two finger scroll and right click were working perfectly fine for two
weeks, and then all of a sudden I started encountering the same problem
as described in the above bug.  This has happened not only on Ubuntu,
but also on Fedora and Arch, leading me to believe that the bug lies
solely in the Synaptics Xorg driver.  This driver needs work anyway, as
my solution was not a true solution, just two finger pressure emulation.
It still lacks true multi touch support for my trackpad, and is unstable
at best.

I have noticed when I put one finger flat on the trackpad, it emulates
those two finger functions.  I can also make it work by placing two
fingers, but right next to each other.  It's when I spread the two
fingers apart that the cursor becomes "crazy" and jumps all over the
screen.

-- 
pointer gets crazy when tapping with two fingers on synaptics multitouch touchpad
https://bugs.launchpad.net/bugs/576550
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