touchpad not detected, works with Windows 10 - Lenovo Ideapad 81H5

[northleaf]

Lenovo Ideapad 81H5 laptop
Dual boot installation Windows 10 factory installed, added Ubuntu 18.04 no problem, built WiFi drivers no problem, unable to figure our how to get touchpad working.

Description: Ubuntu 18.04.2 LTS
Release: 18.04

Bug fixed, not a bug actually.
Problem was touchpad ELAN0620 is new and not supported in kernels up to 4.18
Fix:
Install ukuu to then get a kernel greater then or equal to 4.19
  sudo apt-add-repository -y ppa:teejee2008/ppa
  sudo apt-get update
  sudo apt-get install ukuu

Run ukuu via gui or in terminal with ukuu-gtk
Select kernel at least 4-19 or up
Repoot

Touchpad now working fine.

Before fix couldn't see touchpad:
cat /proc/bus/input/devices output:

Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:24/PNP0C0D:00/input/input0
U: Uniq=
H: Handlers=event0
B: PROP=0
B: EV=21
B: SW=1

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=PNP0C0C/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input2
U: Uniq=
H: Handlers=kbd event1
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input3
U: Uniq=
H: Handlers=kbd event2
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0011 Vendor=0001 Product=0001 Version=ab41
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input4
U: Uniq=
H: Handlers=sysrq kbd event3 leds
B: PROP=0
B: EV=120013
B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0003 Vendor=046d Product=404c Version=0111
N: Name="Logitech K830"
P: Phys=usb-0000:00:10.0-2:1
S: Sysfs=/devices/pci0000:00/0000:00:10.0/usb2/2-2/2-2:1.2/0003:046D:C52B.0003/0003:046D:404C.0004/input/input12
U: Uniq=404c-0e-fc-54-a8
H: Handlers=sysrq kbd mouse0 event4 leds
B: PROP=0
B: EV=12001f
B: KEY=3007f 0 0 483ffff17aff32d bf54444600000000 ffff0001 130f938b17c007 ffff7bfad941dfff febeffdfffefffff fffffffffffffffe
B: REL=143
B: ABS=100000000
B: MSC=10
B: LED=1f

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input13
U: Uniq=
H: Handlers=kbd event5
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Ideapad extra buttons"
P: Phys=ideapad/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.3/PNP0C09:00/VPC2004:00/input/input14
U: Uniq=
H: Handlers=rfkill kbd event6
B: PROP=0
B: EV=13
B: KEY=81000800100c03 4400000000300000 0 2
B: MSC=10

I: Bus=0003 Vendor=04f2 Product=b5d7 Version=1407
N: Name="EasyCamera: EasyCamera"
P: Phys=usb-0000:00:12.0-1.3/button
S: Sysfs=/devices/pci0000:00/0000:00:12.0/usb1/1-1/1-1.3/1-1.3:1.0/input/input15
U: Uniq=
H: Handlers=kbd event7
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA ATI HDMI HDMI/DP,pcm=3"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:01.1/sound/card0/input16
U: Uniq=
H: Handlers=event8
B: PROP=0
B: EV=21
B: SW=140

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HD-Audio Generic Mic"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:09.2/sound/card1/input17
U: Uniq=
H: Handlers=event9
B: PROP=0
B: EV=21
B: SW=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HD-Audio Generic Headphone"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:09.2/sound/card1/input18
U: Uniq=
H: Handlers=event10
B: PROP=0
B: EV=21
B: SW=4

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.18.0-15-generic 4.18.0-15.16~18.04.1
ProcVersionSignature: Ubuntu 4.18.0-15.16~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Jun 25 12:05:39 2019
InstallationDate: Installed on 2019-06-25 (0 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)

[Po-Hsu Lin (cypressyew)]

Patch for this touchpad has been applied in the Ubuntu Disco kernel,
https://kernel.ubuntu.com/git/ubuntu/ubuntu-disco.git/commit/?id=3ed64da3b790be7c63601e8ca6341b7dff74a660

The 5.0 HWE kernel for Bionic will soon to be released, therefore I will mark this bug as fix-released.

For those who are affected by this issue, please wait a moment for 5.0 HWE kernel to land or use the newer release like Disco.

[Po-Hsu Lin (cypressyew)]

I thinks it's better to flip the status after the release of 5.0 HWE kernel .

[Po-Hsu Lin (cypressyew)]

5.0 kernel available for Bionic now. Closing this.