I recently installed Ubuntu 18.04 on my Dell XPS laptop. From the get-go, the touchpad was finnicky, often stalling, and really unusable. I found that this answer helped to resolve the basic problem, and movement with the touchpad now works smoothly, no issue with basic functionality. Great!
However, it still does not does not do two-finger scrolling, which is super useful on a laptop. I really miss it. I've been trying to figure out how to fix it, but there is no "two-finger scroll" option in System Settings > Devices > Mouse & Touchpad. In fact, there is no Touchpad section at all, and here is the output from xinput:
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ImPS/2 Generic Wheel Mouse id=13 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ Laptop_Integrated_Webcam_1.3M: id=10 [slave keyboard (3)]
↳ Dell WMI hotkeys id=11 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]
I'm not very knowledgeable about this, but it appears to me that the touchpad has not been detected. Any thoughts on how to troubleshoot this?
Thanks!
