One major grief with the ntrig devices is the poor filtering of ghost contacts. The ghosts fall on random combinations of X and Y from the real contacts (x_i, y_i), such that (x_i, y_j) may become a contact for arbitrary i != j. Running the mtview program (git clone http://bitmath.org/git/mtview.git, cd mtview, make, ./bin/mtview <device>) and putting two fingers diagonally on the canvas reveals the problem very clearly. It would be great with a confirmation that this problem persists on the T410s.
As a drastic possibility, it could be possible to convert the ntrig to a non-mt driver, just reporting one position and concentrating on counting the number of fingers properly. With such a solution, one loses the pinch-to-zoom and rotate, but multi-finger tapping and dragging could still work. -- Work around possible touch hardware issues in Lenovo T410s https://bugs.launchpad.net/bugs/626769 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
