Comment 21 for bug 1881319

I also have a Lenovo IdeaPad 5 15ARE05 with Ubuntu 20.04 installed on it. No touchpad working.

cat /proc/bus/input/devices
I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/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/input1
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/input2
U: Uniq=
H: Handlers=kbd event2
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0011 Vendor=0001 Product=0001 Version=ab83
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input3
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=0018 Vendor=0000 Product=0000 Version=0000
N: Name="Elan Touchscreen"
P: Phys=
S: Sysfs=/devices/platform/AMDI0010:01/i2c-1/i2c-ELAN0001:00/input/input4
U: Uniq=
H: Handlers=mouse0 event4
B: PROP=2
B: EV=b
B: KEY=400 0 0 0 0 0
B: ABS=661800001000003

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/device:05/LNXVIDEO:00/input/input5
U: Uniq=
H: Handlers=kbd event5
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0003 Vendor=093a Product=2510 Version=0111
N: Name="PixArt USB Optical Mouse"
P: Phys=usb-0000:03:00.4-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:08.1/0000:03:00.4/usb3/3-1/3-1:1.0/0003:093A:2510.0001/input/input6
U: Uniq=
H: Handlers=mouse1 event6
B: PROP=0
B: EV=17
B: KEY=70000 0 0 0 0
B: REL=903
B: MSC=10

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/input7
U: Uniq=
H: Handlers=rfkill kbd event7
B: PROP=0
B: EV=13
B: KEY=81000800100c03 4400000000300000 0 2
B: MSC=10

I: Bus=0003 Vendor=174f Product=244c Version=0013
N: Name="Integrated Camera: Integrated C"
P: Phys=usb-0000:03:00.3-3/button
S: Sysfs=/devices/pci0000:00/0000:00:08.1/0000:03:00.3/usb1/1-3/1-3:1.0/input/input8
U: Uniq=
H: Handlers=kbd event8
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HD-Audio Generic HDMI/DP,pcm=3"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:08.1/0000:03:00.1/sound/card0/input9
U: Uniq=
H: Handlers=event9
B: PROP=0
B: EV=21
B: SW=140

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HD-Audio Generic HDMI/DP,pcm=7"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:08.1/0000:03:00.1/sound/card0/input10
U: Uniq=
H: Handlers=event10
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/pci0000:00/0000:00:08.1/0000:03:00.6/sound/card1/input11
U: Uniq=
H: Handlers=event11
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/pci0000:00/0000:00:08.1/0000:03:00.6/sound/card1/input12
U: Uniq=
H: Handlers=event12
B: PROP=0
B: EV=21
B: SW=4

And

xinput --list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ PixArt USB Optical Mouse id=10 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Video Bus id=7 [slave keyboard (3)]
    ↳ Power Button id=8 [slave keyboard (3)]
    ↳ Integrated Camera: Integrated C id=9 [slave keyboard (3)]
    ↳ Ideapad extra buttons id=11 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]