Hello, Basically, what I would like to do is prevent input events from my touchscreen from appearing on /dev/input/mice. I have a dual-head setup with a regular screen (built into my laptop) on the left and a touchscreen on the right. When the touchscreen is touched, it registers two clicks; this is undesirable. From what I can find in forums, etc., the issue is that input events appear on both /dev/input/mice and /dev/input/mouse0. Indeed, when the touchscreen is touched, both devices show activity. Earlier, the multiple-click issue did not occur, but there was another issue: touchscreen events did not occur in the correct spot (they were spread across both monitors). I fixed this using $ xinput set-prop "QUANTA OpticalTouchScreen" --type=float "Coordinate Transformation Matrix" 0.53333333 0 0.46666666667 0 1 0 0 0 1 n.b. The touchscreen is a HP Compaq L2105tm, which uses a touch sensor manufactured by Quanta. The screen is 1920x1080 and is sitting to the right of the laptop, which has a 1680x1050 display, so the transformation matrix is correct. Now that the touchscreen is properly calibrated, there are two clicks: one in the correct spot, and one in the original spot (where it clicked before I invoked xinput; this location corresponds to an identity transformation matrix). How can I fix this issue? I found 3 separate solutions, none of which worked for me: 1. Disable /dev/input/mice, as described at <a href="http://www.conan.de/touchscreen/evtouch.html">http://www.conan.de/touchscreen/evtouch.html</a> -There is no ServerLayout section in my xorg.conf. The dual-head layout is configured dynamically by Gnome 3 when I log in or when the monitor is attached; I'll eventually configure ivman or similar to automatically invoke xinput when the display is attached. -As I understand it, this will prevent the mouse (a TrackPoint) from working; the mouse is needed for the regular display. 2. Patch the driver, per <a href="http://www.linuxquestions.org/questions/linux-desktop-74/hal-vs-xserver-dev-input-mice-convincing-x-to-*not*-use-a-given-input-device-697802/#post3415561">http://www.linuxquestions.org/questions/linux-desktop-74/hal-vs-xserver-dev-input-mice-convincing-x-to-*not*-use-a-given-input-device-697802/#post3415561</a> -I don't know where in the driver I should insert this code; plus, the driver is part of the kernel (module hid-quanta), so I'd have to recompile my kernel. 3. Write a HAL rule, per <a href="http://www.linuxquestions.org/questions/linux-desktop-74/hal-vs-xserver-dev-input-mice-convincing-x-to-*not*-use-a-given-input-device-697802/#post3625659">http://www.linuxquestions.org/questions/linux-desktop-74/hal-vs-xserver-dev-input-mice-convincing-x-to-*not*-use-a-given-input-device-697802/#post3625659</a> -I tried this, and it didn't work. I used <match key="info.product" contains="OpticalTouchScreen">, but I'm not sure if this is correct. I'm running X.Org 1.10.3.901 (1.10.4 RC 1) on Linux 3.0 (the distribution is Arch Linux). If there is any additional information needed (log output, etc.), please ask. Thanks, Kerrick Staley