Touch Screen Troubleshooting - HP Compaq L2206tm User Manual

Touch screen troubleshooting

NOTE: For general troubleshooting information, refer to
Table 4-2 Touch screen troubleshooting
Problem
Computer does not recover from Sleep mode when the touch
screen is touched.
The USB cable is quickly removed from the monitor and
reinserted, and the touch function is lost.
Multi-touch gestures do not function on Windows 7 Home
Basic or Starter editions, Windows Vista, or Windows XP.
The Start, Close, and other icons are too small to touch with
a finger.
Touch operation does not function properly on lower-
resolution video modes that are not displayed in fullscreen.
A single touch is recognized as two touches. If using a paint
tool, a single finger creates two lines.
When the monitor used is in a dual-screen configuration, the
touch function on the second display does not work.
Touch function is erratic.
Support and troubleshooting on page
Solution
Sleep mode recovery is not supported by the touch screen.
Use the keyboard or mouse to recover from Sleep mode.
Windows takes a minimum amount of time to adjust system
parameters when a USB device is either removed or
connected. Try removing the USB cable again, wait for at
least five seconds, and then plug it in again.
Only Windows 7 Home Premium, Professional, Enterprise,
and Ultimate editions support multi-touch gestures.
Windows 7 provides a large icon feature that supports touch
screen functions. This feature can be accessed in the
Control Panel. A stylus may also be used.
Although the monitor supports a fill-to-aspect ratio function,
the touch controller does not know how to respond to less-
than-fullscreen images. Either change the resolution to 1920
x 1080, or access the OSD menu and select Image Control
to enable Fill-to-Screen (default setting).
The touch controller has a limitation on the size of the
"touch" area. A fingertip touch usually works better than a flat
forefinger or thumb touch.
The USB connection is only capable of operating a single-
touch screen monitor. If the second monitor is a touch
monitor, you must connect a second USB cable.
NOTE: Windows 7 Home Basic and Starter editions,
Windows Vista, and Windows XP do not support extended
display touch functionality. They support single-touch
functions on the primary monitor only, not the secondary
monitor (extended or cloned desktop).
The screen may have surface contamination. Refer to
Cleaning the monitor panel, in the Tips and troubleshooting
section.
Tips and troubleshooting
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