I too am affected now. After suspend+resume, my touchpad isn't found. Rebooting doesn't help: I really have to turn the machine off and on again.
I can attach mouse, and then if I try to open touchpad settings in Input Devices settings (I use Kubuntu), it says that Touchpad isn't found, and xinput doesn't show it either. - Fujitsu E556 laptop - 4.15.0-20-generic #21-Ubuntu I still have Ubuntu 16.04 on one SSD with the kernel 4.4.0-119-generic, and the issue doesn't appear there. I think the issue didn't appear on Kubuntu 17.04 either. I didn't try 17.10. The workaround mentioned in the original post didn't work for me. When I ran sudo modprobe i2c-hid, I got this message: rmmod: ERROR: Module i2c_hid is not currently loaded The command sudo modprobe i2c-hid completed, but the touchpad didn't start working. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1723799 Title: touchpad not working after resume on kernel 4.13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1723799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs