P52: "cat /sys/bus/serio/devices/serio1/firmware_id": PNP: LEN2132 PNP0f13
Confirming a fresh install of ubuntu 18.10 works yields a fully functional touchpad but updating (tested with current kernel 4.18.0-12-generic) renders the touchpad unusable. Issuing "sudo sh -c 'echo -n "elantech"> /sys/bus/serio/devices/serio1/protocol'" restores the trackpads functionality for the current session as already described. "dmesg | grep -i elan" yields: [ 3.167455] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001) [ 3.179490] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e. [ 3.191246] psmouse serio1: elantech: Elan sample query result 00, 28, 96 [ 3.202881] psmouse serio1: elantech: Trying to set up SMBus access [ 4.032146] elan_i2c 0-0015: 0-0015 supply vcc not found, using dummy regulator [ 4.048144] elan_i2c 0-0015: failed to get resolution: -5 [ 4.048168] elan_i2c: probe of 0-0015 failed with error -5 after echoing "elantech", dmesg shows [ 2185.669979] input: ETPS/2 Elantech TrackPoint as /devices/platform/i8042/serio1/input/input17 [ 2185.683258] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input16 instead of the former last three lines. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1803600 Title: Elantech - Touchpad not working after upgrading to 18.10 from 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803600/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
