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-   -   erratic mouse behaviour... (http://www.mac-forums.com/forums/apple-desktops/293465-erratic-mouse-behaviour.html)

Thymen 01-16-2013 12:20 PM

erratic mouse behaviour...
 
Boy, was I frustrated today......

turned on my mac, and as soon as the login screen appeared my mouse pointer behaved very erratically. No matter what I did, it always jumped to and fro, and put itself mostly in the right lower portion of the screen. If I moved it to the centre, it jumped back.

Tabbed to my login, and entered my password. On the desktop, same behaviour. So I logged in to my trustworthy, always working, never-have-problems Windows box ( ;P ) to google. Found out that there are quite some users having or having had the same problem. Often related to other connected hardware, like Firewire drives.

I connected/disconnected all peripherals, and the problem dis-appeared. Then, one by one, I reconnected. Found out that the USB port to the USB hub gave the problem. So connected/disconnected each of the 7 or so usb devices, and I finally found out it was the Wacom tablet that was causing it.

Was about to scrap it, until I noticed my wife had put the stylus, in it's holder, on top of the tablet.. causing the tablet to constantly negotiate mouse position with the stylus.. :Mischievous:

All in all, took me about an hour to figure it out...

Thymen.


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