@kaihengfeng I installed the udev and libudev packages you provided but I got two errors during installation. After installing these two packages I rebooted, and the trackpad is still not working, I cannot make the trackpad work anymore, even with the two commands above that used to do the magic. Any rollback? If I marked these two packages as removal in synaptic I will remove a lot of packages linked to them, even some system packages.
(Reading database ... 225803 files and directories currently installed.) Preparing to unpack libudev1_232-21ubuntu3_amd64.deb ... Unpacking libudev1:amd64 (232-21ubuntu3) over (232-21ubuntu3) ... Preparing to unpack udev_232-21ubuntu3_amd64.deb ... Unpacking udev (232-21ubuntu3) over (232-21ubuntu3) ... Setting up libudev1:amd64 (232-21ubuntu3) ... Setting up udev (232-21ubuntu3) ... Error, DATA expected but got 'evdev:name:PS/2 Logitech Wheel Mouse:dmi:*svnLENOVO*:pvrLenovoideapadY700-15ISK*' in '/lib/udev/hwdb.d/70-touchpad.hwdb': Error, MATCH expected but got ' PSMOUSE_PROTOCOL=elantech' in '/lib/udev/hwdb.d/70-touchpad.hwdb': addgroup: The group `input' already exists as a system group. Exiting. update-initramfs: deferring update (trigger activated) Processing triggers for libc-bin (2.24-9ubuntu2) ... Processing triggers for ureadahead (0.100.0-19) ... ureadahead will be reprofiled on next reboot Processing triggers for systemd (232-21ubuntu3) ... Processing triggers for man-db (2.7.6.1-2) ... Processing triggers for initramfs-tools (0.125ubuntu9) ... update-initramfs: Generating /boot/initrd.img-4.12.0-041200rc3-generic W: Possible missing firmware /lib/firmware/i915/kbl_huc_ver02_00_1810.bin for module i915 W: Possible missing firmware /lib/firmware/i915/bxt_huc_ver01_07_1398.bin for module i915 W: Possible missing firmware /lib/firmware/i915/skl_huc_ver01_07_1398.bin for module i915 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693440 Title: Cypress PS/2 Trackpad not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1693440/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
