3M MT7 Removing MT 7 For Linux , Troubleshooting The Init Script

3M™ MicroTouch™ Software MT 7 User Guide 47
3M Touch Systems, Inc. Proprietary Information – 25695M
Cannot install the init script
The Install script tries to detect the presence of the chkconfig and update-rc.d utilities
and the /etc/rc.d/rc.local script. If it cannot find any of these, this message
appears. If your system uses the chkcconfig or update-rc programs, make sure the PATH
environment variable contains the path to where the programs reside. If rc.local is in
another directory, edit the Install script and change the value of the InitDir variable. If
your system uses some other system, you need to place the init script TWDrvStartup
in the appropriate place. The Install script creates a copy where the MT 7 for Linux®
package resides. You may need to edit the TWDrvStartup script to work with your
system.
Cannot install the X init script
The Install script could not determine where to install the X init script needed by MT 7
for Linux® to launch background tasks. Edit the Install script and set the XinitDir
variable.
Cannot install the X input module
The Install script could not find the directory for the X input module. Confirm that the
variable XorgDir or XFree86Dir is set correctly in the Install script.
Hot plugging of USB touch controllers is not supported
The Install script cannot find the udev or hotplug support files. If you do not need hot
plugging of USB controllers, ignore this message. Otherwise, edit the Install script and
change the UdevDir or Hotplug variable to an appropriate value.
Removing MT 7 For Linux
In the installation directory, run the script Remove. This removes the data directories and
disengages MT 7 for Linux® from the system. The files remain. You must manually
remove the files from the twscreen directory.
Troubleshooting The Init Script
Due to the variety of methods of running init scripts, the Install script makes a best guess
as to when the TWDrvStartup script should run. This guess is occasionally wrong.
There are three critical considerations regarding the init script sequence.
1. The USB file system must be operational before the TWDrvStartup script runs. If
not, the driver does not service USB touch controllers. A symptom of this is
calibration does not work.
2. Any script that inspects serial ports must finish before the TWDrvStartup script runs.
These programs can interfere with the driver's ability to detect and identify serial
touch controllers. A symptom of this is touch or calibration not working.