Solved by using the proprietary non-free driver from eGalax http://www.eeti.com.tw/drivers_Linux.html
OpenSource and multiple displays where one is a touchscreen still don't get along very well yet. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1392064 Title: lightdm ignores .conf file in /usr/share/lightdm/lightdm.conf Status in lightdm package in Ubuntu: Expired Bug description: Setup: Ubuntu 14.04.1LTS IIyama 19" Pro-Lite Touchscreen Dell 17" regular monitor Due to another bug in the detection of input devices I had to write a script to tell Ubuntu which screen to use the touch from the touchscreen. so I put the following two entries into a basic bash script based on xinput list and xrandr -q ======== #!/bin/bash xinput map-to-output 12 DVI-I-1 xrandr --output DVI-I-1 --primary ========= I added this script to /usr/share/lightdm/lightdm.conf.d/50-dualscreen-touch.conf and the contents look like this. ============ [SeatDefaults] greeter-setup-script=/usr/local/bin/iiyama-touchscreen.sh session-setup-script=/usr/local/bin/iiyama-touchscreen.sh ============ When I start a user session the touchscreen is calibrated and works normally with the touch happening on the touchscreen. As soon as I logoff into LightDM the touch calibration is off moving the pointer a logarithmic distance from the left of the touchscreen. As soon as I log in again, no problems, touch works great, log back out into the lightDM greeter and boom touch is all crazy. Can lightdm please detect that a touchscreen can only accept touch input and output to the touchscreen device?? Or at least have lightdm actually run the script when given? ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: lightdm 1.10.1-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 CurrentDesktop: Unity Date: Wed Nov 12 22:11:38 2014 InstallationDate: Installed on 2014-11-03 (8 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) LightdmConfig: [SeatDefaults] autologin-user=boerske SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1392064/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp