http://bugzilla.opensuse.org/show_bug.cgi?id=1176971 http://bugzilla.opensuse.org/show_bug.cgi?id=1176971#c1 --- Comment #1 from Steffen Klein --- For the record, kernel tested: # uname -a Linux xxxxxxxxxxx 5.8.10-1-default #1 SMP Mon Sep 21 11:00:19 UTC 2020 (af3e800) x86_64 x86_64 x86_64 GNU/Linux I adapted now the workaround provided in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861610/comments/66 (just built a fixed dsdt.aml and did a acpi /boot/dsdt.aml in grub.cfg before kernel load (had to disable secure boot in BIOS for that workaround). I can confirm, that the touchpad works aftwerwards. Nevertheless it would be nice to have the available kernel fix included in the standard kernel for not having to fix with the dsdt to get a working touchpad (and yes, I'm aware of the fact, that this is a BIOS-bug which originally should be fixed by Lenovo...) The steps I took: # acpidump -b # iasl -d dsdt.dat # vi dsdt.dsl - Search the HID of the touch pad: ELAN0634 - Search the next _STA method declaration and comment out these four lines: Method (_STA, 0, NotSerialized) // _STA: Status { //If ((TPVD == 0x45)) //{ Return (0x0F) //} //Return (Zero) } - Increment the version number. It’s the last parameter of the DefinitionBlock (line 21 for me): DefinitionBlock ("", "DSDT", 2, "LENOVO", "ICL ", 0x20170002) # iasl -sa dsdt.dsl # cp dsdt.aml /boot reboot, press e in grub menu on your linux boot entry and enter the following line before kernel loading: acpi /boot/dsdt.aml (Secure boot has to be disabled in BIOS!) If it works, add it permanently to the grub.cfg -- You are receiving this mail because: You are the assignee for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1176971 http://bugzilla.opensuse.org/show_bug.cgi?id=1176971#c4 --- Comment #4 from Steffen Klein --- There is a related bug at redhat, where Hans de Goede seem to having submitted a working patch upstream: https://bugzilla.redhat.com/show_bug.cgi?id=1842039 -- You are receiving this mail because: You are the assignee for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1176971 http://bugzilla.opensuse.org/show_bug.cgi?id=1176971#c6 --- Comment #6 from Steffen Klein --- Sorry for the delay, didn't have access to the hardware. I can confirm, that your fix works. Touchpad is now working without acpi meddling. THX! -- You are receiving this mail because: You are the assignee for the bug.