I have exactly the same problem on a Lenovo IdeaPad 3 14IIL05. I don't know if it is of any help but this is the touchpad's info:
cat /proc/bus/input/devices MSFT0001:01 06CB:CE2D Touchpad -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1970056 Title: Ubuntu 22.04 unable to mount root partition To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1970056/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs