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snoxu

Member

Registered: 2010-01-24

Posts: 141

Elantech Touchpad stops working, somewhat randomly

My Elantech touchpad on my Acer laptop will stop working  somewhat randomly

Interesting tid bit: with two user sessions (KDE), on the other user session the touchpad is working fine.

I also have the patched synaptics touch pad driver for xswipe multitouch support.

Looked at dmesg and this seems somewhat relevante:

[ 8586.964003] usb 1-1.2: USB disconnect, device number 7
[ 8587.396604] psmouse serio1: elantech: retrying ps2 command 0xe6 (2).
[ 8587.914352] psmouse serio1: elantech: retrying ps2 command 0xf8 (2)

After I:

sudo modprobe -r psmouse
sudo modprobe psmouse

Touchpad works again, but it's a bit of a hassle to do this constantly. Following relevant dmesg bits:

[13880.011746] psmouse serio1: elantech: assuming hardware version 2 (with firmware version 0x040213)
[13880.083722] psmouse serio1: elantech: Synaptics capabilities query result 0x68, 0x18, 0x0c.
[13880.412503] psmouse serio1: elantech: retrying ps2 command 0xe6 (2).
[13880.927152] psmouse serio1: elantech: retrying ps2 command 0xf8 (2).
[13881.628734] psmouse serio1: elantech: retrying ps2 command 0xf8 (1).
[13882.274014] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input26

Last edited by snoxu (2014-07-17 13:37:12)

shubhoRoy

Member

Registered: 2016-08-13

Posts: 19

Re: Elantech Touchpad stops working, somewhat randomly

I have a lenovo E431 laptop with the same problem. I restart psmouse every time it locks up but that is not a feasible solution.