Hi Po-Hsu, I installed the Focal kernel (using dpkg -i) then removed the i8042.noloop=1 boot option and rebooted. The touchpad still works, and I confirmed that I was actually running the 5.0.4-57 kernel you provided. Looks really good for Focal.
Would you like me to do the same for the Bionic kernel, or was that just a choice in case I needed it? Thanks and Very Best Regards! Tom -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906128 Title: Touchpad not deteced on Bytespeed C15B laptop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1906128/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs