48 | 3M™ MicroTouch™ Software MT 7 User Guide |
3.The TWDrvStartup script must complete before running the X server. The TWDrvStartup script modifies the X server configuration file (either xorg.cfg or xfree86.cfg). When the system shuts down, these files are restored to their original state. It also starts the touch driver, TwDriver. Scripts that launch the X server reference the programs xdm, gdm, or kdm. Symptoms of this are a lack of touch or possibly erratic touch with USB touch controllers.
In each case, you need to rearrange the order of the init scripts to satisfy the requirements of the MT 7 for Linux® software. The method to do t his is specific to your system's distribution.
Troubleshooting Touch Behavior
Many issues can affect touch.
If you have no touch, it is likely that the X Windows server is starting before the MT 7 for Linux® driver. First, inspect the X Windows con figuration file, usually either /etc/X11/xorg.conf or /etc/X11/xfree86.conf, and see if there is an entry for the "twxinput" driver. If this entry is present, inspect the X Windows server log file, usually either /var/log/Xorg.0.log or /var/log/XFree86.0.log, to see if the driver loaded without error. If the entry is missing or there is an error in the log file, refer to the section above, "Troubleshooting the Init Script".
If the cursor reacts to a touch but does not appear under your finger, usually a simple calibration fixes the problem. If it does not, open a terminal window and type the command "X
Running Touch Applications
There are two touch applications that you can run to customize the touch system. These programs reside in the directory where you installed the package.
1.The Calibration program aligns the sensor to the display's screen. You should run this program after installation or whenever adding a new sensor to the system. Run the program by running the TwCalib program.
2.The Control Panel provides more features to customize your touch system. Run this program as needed by running the StartCP script.
Note: This is a Java® program and runs with the JRE from Oracle®. If you experience problems running the Control Panel, download a JRE from www.oracle.com and install it.
You also need to edit the StartCP script to provide the proper path to the JRE.
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