I have performed some tests with raring beta2 (linux 3.8.0-16-generic,
X.Org X Server 1.13.3 - 2013-03-07 -, unity
6.12.0daily13.04.01-0ububtu1). The touch screen does not work out of the
box. After the first touch it no longer responds to touches.

After installing Benjamin's kernel module  (hid-multitouch-3.6+) the
touchscreen works as expected most of the time. The bug "triggered
'if(!(event->device_event.flags & (1 << 5)))'" described at my very
first post here, still apears from time to time while using the touch
screen. I have not verified yet under what exact circumstances. I have
also noticed that using the touch screen with some applications cause
subsequent failure of getting a click event by tapping. E.g. In firefox
tap on the search box. Then open onBoard keyboard. Try to type something
in firefox search box with onBoard. After the first character firefox
popups search suggestions that seem to take the focus from the text-box
and no other characters are typed. After that tapping anywhere on the
screen fails to produce a click. The problem may be solved by switching
a couple of times between open windows/applications with alt+tab using
the physical keyboard, or  with logging out and in again. (Could this be
related with the appearance of the bug error line in Xorg.0.log? ) The
same problem exists with chromium web browser, when trying to tap on the
options menu icon.

The good news is that nautilus is working good with the touch screen.
Double taps are correctly caught and interpreted to double clicks.

After all, apart from the bug error in Xorg.0.log (can anyone tell what
does it mean??) and the failure of click under the circumstances I
described above, the touchscreen works fine with 13.04 at a basic level.
The main problem seems to be the lack of proper multitouch suport of the
main applications. Firefox does not scroll or zoom with guestures (drag
n scroll pluggin can help for scrolling), the same with chromium. Evince
seems to have some support for touch. I enjoyed reading a pdf with good
accelerated scrolling, but no luck with zoom with pinch. Libreoffice
writer is hard to use with multitouch (no scroll with drag).

I have read on the web about an ubuntu version oriented to tablets that
is being prepared. From what I know it is tested against samsung galaxy
tablets and has released some testing images for these devices (non x86
processors). Is there any luck that we will have some of the
achievements of that project coming to the desktop x86 version of
ubuntu?

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https://bugs.launchpad.net/bugs/1121379

Title:
  Multiple finger touch fails on Sony Vaio Duo 11 running Ubuntu 12.10
  (N-Trig DuoSense MultiTouch)

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