My touchpad stopped working since the upgrade of the kernel to lunix419 and does not work either with linux420. I can't move the mouse and I can't click.
Each time I try to use the touchpad (to move or click), an error message appears in the journal like [Stable Update] 2019-01-17
elan_i2c i2c-ELAN0501:00: invalid report id data (1)
The touchpad is still well recognized as a libinput device:
Device: Elan Touchpad Kernel: /dev/input/event6 Group: 8 Seat: seat0, default Size: 104x75mm Capabilities: pointer gesture Tap-to-click: disabled Tap-and-drag: enabled Tap drag lock: disabled Left-handed: disabled Nat.scrolling: disabled Middle emulation: disabled Calibration: n/a Scroll methods: *two-finger edge Click methods: *button-areas clickfinger Disable-w-typing: enabled Accel profiles: none Rotation: n/a
I found this solution on the forum Touchpad Acer. But I have the same issue as Mibo, I have an ACER laptop (and not the serio1 but only serio0 and no protocol file in serio0).
*** SYSTEM ***
Acer Laptop with InsydeH20 Bios (v1.12)
Problem occurrs with Kernel v 4.19 and 4.20
Thanks for your help
*** SOLUTION ***
Switch the touchpad to basic mode in BIOS menu.
[EDIT] For information: I updated the kernel ACER/Insyde H20 to latest version 1.27). There is no change. Touchpad entry still in basic mode in BIOS and working well (even multiple-finger mode).