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On 2017-05-05T09:04:20+00:00 rghvdberg wrote:

Created attachment 256219
lshw

OS Kubuntu 17.04
Kernel 4.11.0-041100-generic (mainline)
The touchpad isn

I've tried several kernel paramaters

i8042.nomux=1
i8042.reset=1
i8042.noloop=1
i8042.kbdreset=1
i8042.nopnp=1
i8042.debug=1

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On 2017-05-05T09:05:12+00:00 rghvdberg wrote:

Created attachment 256221
dmesg

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On 2017-05-05T09:07:17+00:00 rghvdberg wrote:

Created attachment 256223
devices

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On 2017-09-19T13:37:32+00:00 nikolas wrote:

Can you attach the output of `udevadm info -e` run as root?

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On 2017-09-20T13:45:40+00:00 rghvdberg wrote:

NOTE : Currently on 4.9.48-1-MANJARO
output was too long so I pastebinned it

https://pastebin.com/HV6CRvFJ

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On 2019-02-25T14:50:08+00:00 vbatts wrote:

This is still not working on 4.16.3 and 4.20.8 on Fedora
reading on https://alpha-labs.net/2015/08/lenovo-s21e-linux-and-the-touchpad/
it looks like there had been a fix floated for the hid-rmi module.

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On 2019-02-25T15:26:19+00:00 vbatts wrote:

ah, sorry. This looks like an i2c elan touchpad issue. My apologies.
[vbatts@dhcp6-118 ~]$ dmesg | grep -i elan
[    2.442191] i2c_hid i2c-ELAN0601:00: i2c-ELAN0601:00 supply vdd not found, 
using dummy regulator

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On 2019-02-25T19:52:30+00:00 vbatts wrote:

Created attachment 281341
add the ELAN0601 ID

this is the patch i've emailed to Duson Lin

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On 2019-02-25T19:54:10+00:00 vbatts wrote:

Confirmed the patch works on the Lenovo s21e-20 laptop with 5.0.0-rc8
kernel. Surely could be backported to other releases.

Duson's EMC email bounced. What subsystem should I mail this patch to

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** Changed in: linux
       Status: Unknown => Confirmed

** Changed in: linux
   Importance: Unknown => Medium

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Title:
  Touchpad not detected on Lenovo S21e-20

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