Comment 15 for bug 1798363

Hello, I also have the same issue on my Asus GL503GE. This touchpad actually worked on kernel 4.20.16, but after I updated the kernel to 5.0.3, the touchpad didn't respond at all. So here is my dmesg log :

[ 5.648605] i2c_hid i2c-ELAN1200:00: i2c-ELAN1200:00 supply vdd not found, using dummy regulator
[ 5.651130] i2c_hid i2c-ELAN1200:00: Linked as a consumer to regulator.0
[ 5.653404] i2c_hid i2c-ELAN1200:00: i2c-ELAN1200:00 supply vddl not found, using dummy regulator
[ 5.883577] input: ELAN1200:00 04F3:3090 Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-7/i2c-ELAN1200:00/0018:04F3:3090.0004/input/input25
[ 5.884831] input: ELAN1200:00 04F3:3090 Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-7/i2c-ELAN1200:00/0018:04F3:3090.0004/input/input26
[ 5.886132] hid-generic 0018:04F3:3090.0004: input,hidraw3: I2C HID v1.00 Mouse [ELAN1200:00 04F3:3090] on i2c-ELAN1200:00
[ 5.939805] input: ELAN1200:00 04F3:3090 Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-7/i2c-ELAN1200:00/0018:04F3:3090.0004/input/input28
[ 5.940973] hid-multitouch 0018:04F3:3090.0004: input,hidraw3: I2C HID v1.00 Mouse [ELAN1200:00 04F3:3090] on i2c-ELAN1200:00
[ 19.557227] i2c_hid i2c-ELAN1200:00: i2c_hid_get_input: incomplete report (16/255)

And here is my xinput log
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Logitech USB Receiver Mouse id=14 [slave pointer (2)]
⎜ ↳ Logitech USB Receiver Consumer Control id=15 [slave pointer (2)]
⎜ ↳ Asus Keyboard id=17 [slave pointer (2)]
⎜ ↳ ELAN1200:00 04F3:3090 Touchpad id=18 [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)]
    ↳ Asus Wireless Radio Control id=7 [slave keyboard (3)]
    ↳ Video Bus id=8 [slave keyboard (3)]
    ↳ Video Bus id=9 [slave keyboard (3)]
    ↳ Power Button id=10 [slave keyboard (3)]
    ↳ Sleep Button id=11 [slave keyboard (3)]
    ↳ Logitech USB Receiver id=12 [slave keyboard (3)]
    ↳ Logitech USB Receiver System Control id=13 [slave keyboard (3)]
    ↳ USB2.0 HD UVC WebCam: USB2.0 HD id=16 [slave keyboard (3)]
    ↳ Asus WMI hotkeys id=19 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=20 [slave keyboard (3)]
    ↳ Logitech USB Receiver Consumer Control id=21 [slave keyboard (3)]
    ↳ Asus Keyboard id=22 [slave keyboard (3)]

My OS is Fedora 29 using latest Linux kernel 5.0.3-200.fc29.x86_64