Comment 43 for bug 1028617

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Julien-Charles Lévesque (jclevesque) wrote :

The problem is related to electrical interference from the power supply (see http://superuser.com/questions/76649/laptop-touchpad-works-incorrectly-when-on-power-supply). As suggested by users here, increasing the noise threshold helps.

In my case, this problem happens because I am using a cheap ebay power supply that was not manufactured by my laptop's maker.