Public bug reported:
The Asus ep121 touchscreen is a two-finger (at the time) eGalax multitouch
screen 0xeef:0xa001. It should function as such but does not. The pointers
movement and position are relative and not absolute, like a giant laptop
touchpad. The hardware logs say it is a touchpad and load the Synaptics module
for it.
Touching the screen causes a constant "mouse wheel up" issue as well as
removing the ability to click even with a real mouse. The computer is unusable
in this state until rebooted.
There are a number of workarounds for other eGalax touchscreens such as
http://samiux.blogspot.com/2011/04/howto-ubuntu-1104-on-gigabyte-touchnote.html
but nothing works.
These issues occur on 10.10, 11.04, and the 11.10 beta released sept. 1.
In the 11.10 beta, blacklisting the synaptics module allows the
touchscreen to work with absolute coordinates but bad calibration. It
also registers a constant "left mouse button pressed" event after being
touched.
** Affects: xserver-xorg-input-evdev (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/854445
Title:
Asus ep121 (eee slate) touchscreen not working
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