Touchpad Unresponsive After Touching Upper Corners on Latitude 3540
Summary: A touchpad is unresponsive after dragging a finger to the upper left or right corner. It responds after lifting and returning the finger to the touchpad.
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Symptoms
The touchpad of a Latitude 3540 may become unresponsive or appear to lock up after dragging a finger to the upper corners of the touchpad. If the user lifts their finger off the touchpad and then returns it to the touchpad, the touchpad works again.
Affected Platforms:
- Latitude 3540
Cause
The palm rest rejection feature causes this issue. This is part of the touchpad operation and is working as designed.
Resolution
This is expected behavior. The palm rest rejection feature prevents unexpected cursor movement when the user is typing on the internal keyboard. The cursor works as expected when a finger is lifted from the touchpad and then lowered back to the center of the touchpad.
Affected Products
Latitude 3540Article Properties
Article Number: 000216687
Article Type: Solution
Last Modified: 10 Apr 2025
Version: 3
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