CastorisCausa

Personal blog and hacks by Raymundo Cassani

Keeping Synaptics Touchpad disabled

Touchpads in laptops are not for everyone, one of the first things to do when a I get a new computer is to plug a mouse and disable the touchpad (TP).

Few weeks ago, I noticed a strange behavior, in my laptop, every time I started a session in Windows, the touchpad was enabled, that is to say it did not keep its previous status. The touchpad is a Synaptics SMBus TouchPad. As this behavior was annoying, something needed to be done.

After some research I came across this wonderful solution where the touchpad is automatically disabled when a mouse is detected. Unfortunately, the Steelseris Keyboard in my laptop is detected as keyboard-mouse combo, then, the auto-disable, would permanently disable the touchpad, without option to enable it and who knows it could be useful (someday).

Alt
Touchpad and Keyboard in GE62VR

Later, after diving in Windows Register, with Regedit, I noticed a value, in two keys, that controls the touchpad's behavior at the beginning of the Windows session:

DisableDeviceUntilSessionEnd in
HKEY_CURRENT_USER\SOFTWARE\Synaptics\SynTP\TouchPadPS2TM3163
HKEY_CURRENT_USER\SOFTWARE\Synaptics\SynTP\TouchPadSMB2cTM3163

Basically, when they are 0 the touchpad remembers its state at the moment of the last logout, and when 1, the touchpad will be enabled every login.


Changing the values from 1 to 0 was the solution, to keep the touchpad disable.


In case you're want to the same re-enabling behaviour in the touchpad, edit the above-mentioned values in the Registry. You can learn the basics on editing the Windows Registry here: Learn How to Use the Windows Registry Editor (Regedit) in One Easy Lesson.

Comments

comments powered by Disqus