I have just completed a kernel driver that fully handles the T230H: multitouch events plus single touch emulation. When this kernel driver is activated, the device can be used as a touchscreen with the evdev X.org driver, and as a multitouch screen with a patched evdev driver, as explained at http://lii-enac.fr/en/projects/shareit/xorg.html The driver was submitted for inclusion in Linux 2.6.33. Meanwhile, it is available at http://lii-enac.fr/en/projects/shareit/hid-acer.c and there are instructions at http://lii-enac.fr/en/projects/shareit/linux-howto.html Thanks to euxneks, I have found out that the panel in the T230H is the same as in some HP displays. This probably means that the driver will be renamed into hid-quanta.c at some point in the future.