I encountered the same issue and was able to solve it by adding i8042.reset=1 to the kernel command line. i8042.nomux was not necessary for me.
The quirk was committed in https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2712c91a54a1058d55c284152b4d93c979b67be6 which is included in Linux 5.7. It has also been merged into stable for the upcoming v5.6.16, v5.4.44, v4.19.126, v4.14.183, v4.9.226, and v4.4.226. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1210748 Title: On Lenovo Thinkpad Twist internal mouse does not work after turning on machine, only works after reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1210748/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
