See this post

I have the same issue. Touchpad goes into a mode with intermittent freezes after the system is idle but screen blanks. The last post is a recommendation to "press the laptop power button, wait 2 seconds and the press it again to resume and login again"   There is no indication of how the power button is configured. On mine, it causes a shutdown, which is what I'm trying to avoid.

Maybe there is a way to reset the touchpad from the commandline? Like disable/re-enable?

Is there any real solution from Dell? I don't see any touchpad driver in the support listing.

In Device Manager, under "mice and pointing devices" I see three HID compliant Mouse, and one PS/2 compatible mouse.  No mention of trackpad.