HowTo: Disable Synaptics Touchpad While Typing – Ubuntu Forums
Purpose: For many of us, our laptop touchpads get in the way of our typing quite often and can actually cause us to highlight or minimize things we didn’t intend. So, this will help to alleviate that by making a small delay in the response of the touchpad after typing.
NOTE: Please read this guide entirely before attempting to do it. There is a section where you must restart X and thus close down your internet browser. The best way to do this would be to print this guide! I hope this works as well for you as it has for me!
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This has been my biggest frustration. I’ll be trying this tonight.