How do I disable the touchpad using the upper left corner on an HP Pavilion dv6?
Solution 1:
The option you mentoined is a driver feature - there is no linux alternative for that until someone do patch for it.
Look around touchpad settings and you'll find useful replacement settings. For example you can set up a keyboard shourtcut to turn on/off touchpad.
Solution 2:
gsettings set org.gnome.settings-daemon.peripherals.touchpad disable-while-typing true
will disable your touchpad while you are typing and re-enable it when it feels that you are using your finger on the touchpad.
Not sure if it will fit your needs but its a solution that fits me perfectly on my laptop.
To revert to the default parameter use
gsettings set org.gnome.settings-daemon.peripherals.touchpad disable-while-typing false
If it doesn't help drop a comment, well figure out something about your touchpad.