Comment 28 for bug 1696929

I see a much worse version of this problem on my brand new ThinkPad X1 Carbon 6th gen: the mouse cursor moves/clicks only about 5% of the time I use the touchpad. The Trackpoint doesn't work at all. Installing Ubuntu was a keyboard-only affair, and I hoped that some updates would fix this dealbreaker issue. In Ubuntu Budgie 18.04, the mouse worked fine after the DE started up, but was frozen during the startup for ~30 seconds. So this isn't a hardware problem.

I've already installed xserver-xorg-input-synaptics and rebooted - no luck.

What else can I try? The mouse responds normally but only ~5% of the time I use the touchpad (move cursor, or tap/click).