Laptop Left Click button on touchpad not functioning after "apug" update

Yes set it to 0 with the same string. Be aware that will turn the TP off completely.

OTOH, this makes clear that the TP is recognized so, although it's jittery:
It might be an idea to use the TP-configurator to change the settings.....on first sight this looks a lot like your post here.
or try:
"killall syndaemon ; syndaemon -d -K -R -i 0.9"
again, which is the default setting the TP-configurator runs.

So frankly, I'm getting suspicious of your hardware too...albeit 99% of issues that seem to be hardware related are usually software related. :nod: