I use a HP NoteBook 15 and formatted the laptop and installed ubuntu in it. The touchpad works with the initial version of the kernel. After I ran sudo apt-get upgrade it stopped detecting the touchpad. I tried many solutions but nothing worked.
I tried this solution- Touchpad is not recognized but still it did not work.
When I run xinput list this is the output,
WARNING: running xinput against an Xwayland server. See the xinput man page for details.
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ xwayland-pointer:17 id=6 [slave pointer (2)]
⎜ ↳ xwayland-relative-pointer:17 id=7 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ xwayland-keyboard:17 id=8 [slave keyboard (3)]
The touchpad is not detected here.
