I've tried adding these kernel parameters in GRUB before boot placing them just between the "splash" and "---":
i8042.nopnp=1 pci=nocrs (according to here https://www.reddit.com/r/linuxquestions/comments/f9h0q4/touchpad_issue_lenovo_s14515iil/fmg277m/ ) And voila! - Touchpad is working - Touchscreen is working - pen/Stylus is NOT working properly - it behaves only just like if using a finger - no additional functionality except for basic "clicking" BUT! according to kernel documentation ( https://www.kernel.org/doc/html/v4.10/admin-guide/kernel-parameters.html ) - this is a BUG and shall be reported: nocrs [X86] Ignore PCI host bridge windows from ACPI. If you need to use this, please report a bug. So... what are next steps, please? Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1884232 Title: touchpad doesn't work at all on ACER Spin 5 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1884232/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs