Find the right device to reverse-engineer

I have an Asus GL503VD for which the touchpad doesn't work on linux. I tried many different distros: Arch, Debian, Ubuntu 16/17/18, Sabayon, Pop_OS, Fedora. None of them made the touchpad work so I settled with Ubuntu 18.04 and decided to debug it myself. First of, this laptop is pretty new so it will not boot without the acpi=force GRUB parameter. Secondly, it will boot to a black-screen if the module i2c-hid is allowed to load (so I had to blacklist i2c-hid). I am pretty sure i2c-hid is the driver supposed to take care of my touchpad so this is a problem probably worth looking into. The thing is when the module is allowed to load I can't even reach a terminal with a ctrl+alt+f* combo, it's just black, nothingness. From my Windows partition I could tell that the touchpad is an ELAN1200(not elantech). I tried loading the module hid-elan without any success. Out of desperation I also tried the synaptics module without any luck. Tried various x.org.conf.d configurations which only stopped my laptop from reaching Gnome DE. Tried using libinput, in vain. Tried i8042.nomux=1, i8042.noloop, i8042.nopnp, i8042.kdbreset=1, i8042.reset; none of those worked. (From what I gather, my touchpad/keyboard combo might be managed by an i8042 chip; though from the xinput output it looks more like an ITE8910 is managing the combo.) The xinput output is also what tells me the touchpad might be part of a touchpad/keyboard combo. I think the touchpad and the keyboard are one device: ITE8910 xinput output: ⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ MOSART Semi. USB Device id=12 [slave pointer (2)] ⎜ ↳ ITE Tech. Inc. ITE Device(8910) id=14 [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)] ↳ USB2.0 HD UVC WebCam: USB2.0 HD id=13 [slave keyboard (3)] ↳ Asus WMI hotkeys id=15 [slave keyboard (3)] ↳ AT Translated Set 2 keyboard id=16 [slave keyboard (3)] ↳ ITE Tech. Inc. ITE Device(8910) id=17 [slave keyboard (3)] The ouput of dmesg tells me the device is connected through USB: [ 2.408602] usb 1-8: new full-speed USB device number 5 using xhci_hcd [ 2.562105] usb 1-8: New USB device found, idVendor=0b05, idProduct=1869 [ 2.562106] usb 1-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 2.562107] usb 1-8: Product: ITE Device(8910) [ 2.562108] usb 1-8: Manufacturer: ITE Tech. Inc. If I lsusb I see the right device with vendor ID and product ID: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 0b05:1869 ASUSTek Computer, Inc. Bus 001 Device 004: ID 13d3:5666 IMC Networks Bus 001 Device 003: ID 8087:0a2b Intel Corp. Bus 001 Device 002: ID 062a:410c Creative Labs Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Note: The Creative Labs device is an external mouse. When I lsusb -vd 0b05:1869 I only see keyboard related descriptors: Bus 001 Device 005: ID 0b05:1869 ASUSTek Computer, Inc. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0b05 ASUSTek Computer, Inc. idProduct 0x1869 bcdDevice 0.03 iManufacturer 1 ITE Tech. Inc. iProduct 2 ITE Device(8910) iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 34 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 1 Boot Interface Subclass bInterfaceProtocol 1 Keyboard iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.10 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 263 Report Descriptor: (length is 263) Item(Global): Usage Page, data= [ 0x89 0xff ] 65417 (null) Item(Local ): Usage, data= [ 0x10 ] 16 (null) Item(Main ): Collection, data= [ 0x01 ] 1 Application Item(Global): Report ID, data= [ 0xa5 ] 165 Item(Local ): Usage, data= [ 0x01 ] 1 (null) Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 Item(Global): Report Size, data= [ 0x08 ] 8 Item(Global): Report Count, data= [ 0x10 ] 16 Item(Main ): Feature, data= [ 0x00 ] 0 Data Array Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Main ): End Collection, data=none Item(Global): Usage Page, data= [ 0x89 0xff ] 65417 (null) Item(Local ): Usage, data= [ 0x0f 0xff ] 65295 (null) Item(Main ): Collection, data= [ 0x01 ] 1 Application Item(Global): Report ID, data= [ 0x05 ] 5 Item(Local ): Usage Minimum, data= [ 0x00 ] 0 (null) Item(Local ): Usage Maximum, data= [ 0xff ] 255 (null) Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0xff ] 255 Item(Global): Report Count, data= [ 0x08 ] 8 Item(Global): Report Size, data= [ 0x01 ] 1 Item(Main ): Input, data= [ 0x06 ] 6 Data Variable Relative No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Main ): End Collection, data=none Item(Global): Usage Page, data= [ 0x01 ] 1 Generic Desktop Controls Item(Local ): Usage, data= [ 0x06 ] 6 Keyboard Item(Main ): Collection, data= [ 0x01 ] 1 Application Item(Global): Report ID, data= [ 0x01 ] 1 Item(Global): Report Size, data= [ 0x01 ] 1 Item(Global): Report Count, data= [ 0x08 ] 8 Item(Global): Usage Page, data= [ 0x07 ] 7 Keyboard Item(Local ): Usage Minimum, data= [ 0xe0 ] 224 Control Left Item(Local ): Usage Maximum, data= [ 0xe7 ] 231 GUI Right Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0x01 ] 1 Item(Main ): Input, data= [ 0x02 ] 2 Data Variable Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Global): Report Count, data= [ 0x01 ] 1 Item(Global): Report Size, data= [ 0x08 ] 8 Item(Main ): Input, data= [ 0x03 ] 3 Constant Variable Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Global): Report Count, data= [ 0x05 ] 5 Item(Global): Report Size, data= [ 0x01 ] 1 Item(Global): Usage Page, data= [ 0x08 ] 8 LEDs Item(Local ): Usage Minimum, data= [ 0x01 ] 1 NumLock Item(Local ): Usage Maximum, data= [ 0x05 ] 5 Kana Item(Main ): Output, data= [ 0x02 ] 2 Data Variable Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Global): Report Count, data= [ 0x01 ] 1 Item(Global): Report Size, data= [ 0x03 ] 3 Item(Main ): Output, data= [ 0x03 ] 3 Constant Variable Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Global): Usage Page, data= [ 0x07 ] 7 Keyboard Item(Local ): Usage Minimum, data= [ 0x00 ] 0 No Event Item(Local ): Usage Maximum, data= [ 0xff 0x00 ] 255 (null) Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 Item(Global): Report Count, data= [ 0x06 ] 6 Item(Global): Report Size, data= [ 0x08 ] 8 Item(Main ): Input, data= [ 0x00 ] 0 Data Array Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Global): Usage Page, data= [ 0x07 ] 7 Keyboard Item(Local ): Usage Minimum, data= [ 0x00 ] 0 No Event Item(Local ): Usage Maximum, data= [ 0xdf ] 223 (null) Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0x01 ] 1 Item(Global): Report Count, data= [ 0xe0 ] 224 Item(Global): Report Size, data= [ 0x01 ] 1 Item(Main ): Input, data= [ 0x02 ] 2 Data Variable Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Main ): End Collection, data=none Item(Global): Usage Page, data= [ 0x31 0xff ] 65329 (null) Item(Local ): Usage, data= [ 0x76 ] 118 (null) Item(Main ): Collection, data= [ 0x01 ] 1 Application Item(Global): Report ID, data= [ 0x5a ] 90 Item(Local ): Usage Minimum, data= [ 0x00 ] 0 (null) Item(Local ): Usage Maximum, data= [ 0xff 0x00 ] 255 (null) Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 Item(Global): Report Size, data= [ 0x08 ] 8 Item(Global): Report Count, data= [ 0x01 ] 1 Item(Main ): Input, data= [ 0x00 ] 0 Data Array Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Local ): Usage Minimum, data= [ 0x00 ] 0 (null) Item(Local ): Usage Maximum, data= [ 0xff 0x00 ] 255 (null) Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 Item(Global): Report Size, data= [ 0x08 ] 8 Item(Global): Report Count, data= [ 0x10 ] 16 Item(Main ): Feature, data= [ 0x00 ] 0 Data Array Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Main ): End Collection, data=none Item(Global): Usage Page, data= [ 0x31 0xff ] 65329 (null) Item(Local ): Usage, data= [ 0x79 ] 121 (null) Item(Main ): Collection, data= [ 0x01 ] 1 Application Item(Global): Report ID, data= [ 0x5d ] 93 Item(Local ): Usage Minimum, data= [ 0x00 ] 0 (null) Item(Local ): Usage Maximum, data= [ 0xff 0x00 ] 255 (null) Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 Item(Global): Report Size, data= [ 0x08 ] 8 Item(Global): Report Count, data= [ 0x05 ] 5 Item(Main ): Input, data= [ 0x00 ] 0 Data Array Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Local ): Usage Minimum, data= [ 0x00 ] 0 (null) Item(Local ): Usage Maximum, data= [ 0xff 0x00 ] 255 (null) Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255 Item(Global): Report Size, data= [ 0x08 ] 8 Item(Global): Report Count, data= [ 0x10 ] 16 Item(Main ): Feature, data= [ 0x00 ] 0 Data Array Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Main ): End Collection, data=none Item(Global): Usage Page, data= [ 0x0c ] 12 Consumer Item(Local ): Usage, data= [ 0x01 ] 1 Consumer Control Item(Main ): Collection, data= [ 0x01 ] 1 Application Item(Global): Report ID, data= [ 0x02 ] 2 Item(Local ): Usage Minimum, data= [ 0x00 ] 0 Unassigned Item(Local ): Usage Maximum, data= [ 0x3c 0x02 ] 572 AC Format Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0x3c 0x02 ] 572 Item(Global): Report Size, data= [ 0x10 ] 16 Item(Global): Report Count, data= [ 0x01 ] 1 Item(Main ): Input, data= [ 0x00 ] 0 Data Array Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Main ): End Collection, data=none Item(Global): Usage Page, data= [ 0x01 ] 1 Generic Desktop Controls Item(Local ): Usage, data= [ 0x80 ] 128 System Control Item(Main ): Collection, data= [ 0x01 ] 1 Application Item(Global): Report ID, data= [ 0x04 ] 4 Item(Local ): Usage Minimum, data= [ 0x81 ] 129 System Power Down Item(Local ): Usage Maximum, data= [ 0x83 ] 131 System Wake Up Item(Global): Logical Minimum, data= [ 0x00 ] 0 Item(Global): Logical Maximum, data= [ 0x01 ] 1 Item(Global): Report Count, data= [ 0x08 ] 8 Item(Global): Report Size, data= [ 0x01 ] 1 Item(Main ): Input, data= [ 0x02 ] 2 Data Variable Absolute No_Wrap Linear Preferred_State No_Null_Position Non_Volatile Bitfield Item(Main ): End Collection, data=none Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 4 Device Status: 0x0001 Self Powered This tells me the touchpad side of things is not available to me right now. I can't even see it. So here are my questions: Why can't I see the touchpad? What can I do to find it and start reverse engineering its driver? Link to launchpad bug report(with a lot more log files)