BDL4252E - ghost touch issue
When ghost touch (unsolicited touch) are detected on the screen, this can be caused by external device feeding the screen with mouse coordinate somehow.
A case was reported by a customer once where a screen exhibited a ghost touch issue.
At the end, it was found that the Poly bar attached to the screen via USB-C introduce the "touch" phenomenon..
So to troubleshoot ghost touch, the first thing to do is to eliminate all external sources, especially USB/USB-C
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