When using something like `xinput set-float-prop $INPUTDEV "Coordinate Transformation Matrix" 0.0 -1.0 1.0 1.0 0.0 0.0 0.0 0.0 1.0` to match the coordinates of a touchscreen/tablet to a rotated (transformed) screen, the cursor moves around erratically.
From the original report of david-dklevine (https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-evdev/+bug/742567/comments/32):
when a horizontal or vertical drag is performed the cursor jumps wildly - it appears to jump between what it should be according to the coordinate transformation and what it would be if x=0 and y=1 (that is if the second line of the matrix was the identity). With a diagonal drag or a touch the cursor appears where it should be.
Binary package hint: xserver- xorg-input- evdev
When using something like `xinput set-float-prop $INPUTDEV "Coordinate Transformation Matrix" 0.0 -1.0 1.0 1.0 0.0 0.0 0.0 0.0 1.0` to match the coordinates of a touchscreen/tablet to a rotated (transformed) screen, the cursor moves around erratically.
From the original report of david-dklevine (https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-input- evdev/+ bug/742567/ comments/ 32):
when a horizontal or vertical drag is performed the cursor jumps wildly - it appears to jump between what it should be according to the coordinate transformation and what it would be if x=0 and y=1 (that is if the second line of the matrix was the identity). With a diagonal drag or a touch the cursor appears where it should be.
In addition to the Cando Multi Touch Panel reported at https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-input- evdev/+ bug/742567/ comments/ 32, it also affects me with a AsusTek, Inc. MultiTouch(TTI) (on Asus EeePC T101MT)
lsb_release -rd
Description: Ubuntu 11.04
Release: 11.04
$ apt-cache policy xserver- xorg-input- evdev xorg-input- evdev: gd.tuwien. ac.at/opsys/ linux/ubuntu/ archive/ natty/main amd64 Packages dpkg/status
xserver-
Installed: 1:2.6.0-1ubuntu12
Candidate: 1:2.6.0-1ubuntu12
Version table:
*** 1:2.6.0-1ubuntu12 0
500 http://
100 /var/lib/