The problem
When I try to use my laptop touchpad, nothing happens. It also does not respond to clicks. The keyboard works fine.
Workarounds
Using a usb mouse works just fine
My system
Acer Aspire 5
Pop!_os 20.10 (I started with 20.04 and upgraded last night. Didn't fix)
> uname -a
Linux pop-os 5.8.0-7642-generic #47~1614007149~20.10~82fb226-Ubuntu SMP Tue Feb 23 02:59:01 UTC x86_64 x86_64 x86_64 GNU/Linux
It does seem to be recognized though...
> sudo cat /proc/bus/input/devices
I: Bus=0018 Vendor=04f3 Product=303f Version=0100
N: Name="ELAN0504:00 04F3:303F Touchpad"
P: Phys=i2c-ELAN0504:00
S: Sysfs=/devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-1/i2c-ELAN0504:00/0018:04F3:303F.0001/input/input26
U: Uniq=
H: Handlers=mouse1 event18
B: PROP=5
B: EV=1b
B: KEY=e520 10000 0 0 0 0
B: ABS=2e0800000000003
B: MSC=20
It is also showing up under Virtual core pointer:
> xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Razer Razer DeathAdder V2 id=11 [slave pointer (2)]
⎜ ↳ Razer Razer DeathAdder V2 id=12 [slave pointer (2)]
⎜ ↳ OLKB Preonic Mouse id=15 [slave pointer (2)]
⎜ ↳ OLKB Preonic Consumer Control id=17 [slave pointer (2)]
⎜ ↳ ELAN0504:00 04F3:303F Mouse id=20 [slave pointer (2)]
⎜ ↳ ELAN0504:00 04F3:303F Touchpad id=21 [slave pointer (2)]
> sudo dmesg | grep ELAN
[ 0.886077] i2c_hid i2c-ELAN0504:00: supply vdd not found, using dummy regulator
[ 0.886087] i2c_hid i2c-ELAN0504:00: supply vddl not found, using dummy regulator
[ 1.183623] input: ELAN0504:00 04F3:303F Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-1/i2c-ELAN0504:00/0018:04F3:303F.0001/input/input5
[ 1.183935] input: ELAN0504:00 04F3:303F Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-1/i2c-ELAN0504:00/0018:04F3:303F.0001/input/input6
[ 1.184274] hid-generic 0018:04F3:303F.0001: input,hidraw0: I2C HID v1.00 Mouse [ELAN0504:00 04F3:303F] on i2c-ELAN0504:00
[ 2.513752] usb 1-7: Product: ELAN:Fingerprint
[ 2.513753] usb 1-7: Manufacturer: ELAN
[ 39.950963] input: ELAN0504:00 04F3:303F Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-1/i2c-ELAN0504:00/0018:04F3:303F.0001/input/input25
[ 39.951072] input: ELAN0504:00 04F3:303F Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-1/i2c-ELAN0504:00/0018:04F3:303F.0001/input/input26
[ 39.951163] hid-multitouch 0018:04F3:303F.0001: input,hidraw0: I2C HID v1.00 Mouse [ELAN0504:00 04F3:303F] on i2c-ELAN0504:00
