1 Information known about the problem
By today the problem occurs only on first start-up of the operating system. During the setup of the operating system, also the touch driver will be installed on suitable hardware environment (Panel PC only).
While the installation
of the touch driver, the serial touch controller must be selected by the touch driver. In current setup routine the touch driver installation is on-going with “auto detection” of touch controller.
At this stage of touch driver installation the touch driver searches on all existing COM interfaces for the touch controller. Normally a satisfying communication between touch controller and touch driver indicates the correct COM interface for the touch driver installation and for further touch functionality.
On the strength of three possible reasons, the touch controller couldn’t be found during touch installation with auto detection function:
COM port is already in use by operating system or any other application
COM interface is not shared by the operating system or system resources
Touch controller is not properly working
If auto detection could not successfully finish, the touch driver installation will complete without suspended
COM interface for touch controller and without touch function for the user of the touch panel.
Deeper analyses of reported issues are still on going.
2 Identification of problem
An indication for this issue could be done by.
2.1 Failure of touch functionality
Only a rough indication of that problem is given due missing
touch functionality after
First initial installation of operating system
Finished recovery process of operating system
Only a detail check in the touch driver setting gives a clear indicator to that problem:
1. Open “Start” > “Control Panel” > “Touch Screen” > Tab “Hardware”
