There are a couple of commits in the upstream 3.0.18 kernel which might
fix this. From the changelog:
commit a92035b63540e2d47326540dc38625283143b770
Author: Marek Vasut
Date: Wed Nov 23 10:54:32 2011 +0100
HID: multitouch: Add egalax ID for Acer Iconia W500
commit bb9ff21072043634f147c05ac65dbf8185d4af6d upstream.
This patch adds USB ID for the touchpanel in Acer Iconia W500. The panel
supports up to five fingers, therefore the need for a new addition of panel
types.
Signed-off-by: Marek Vasut
Signed-off-by: Benjamin Tissoires
Signed-off-by: Jiri Kosina
Signed-off-by: Greg Kroah-Hartman
commit 369f7532bcaa78eb3919306e1ff997aa14bbfbbb
Author: Benjamin Tissoires
Date: Wed Nov 23 10:54:31 2011 +0100
HID: multitouch: cleanup with eGalax PID definitions
commit e36f690b37945e0a9bb1554e1546eeec93f7d1f6 upstream.
This is just a renaming of USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH{N}
to USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_{PID} to handle more eGalax
devices.
Signed-off-by: Benjamin Tissoires
Signed-off-by: Jiri Kosina
Signed-off-by: Greg Kroah-Hartman
Otherwise you might need the upcoming Ubuntu 12.04 "Precise Pangolin".
In addition to the 3.2.x kernel (which I'm assuming contains these
patches) it has xserver 1.11 with all of the new X Input 2.2 framework
backported from the upcoming xserver 1.12. X Input 2.2 contains a much
improved multitouch system.
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https://bugs.launchpad.net/bugs/801988
Title:
[Acer W500] multitouch doesn't work
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