ASUS GU501GM touchpad not detected

The touchpad on the new ASUS GU501GM (the junior Zephyrus M that is a Best Buy exclusive) does not seem to be detected whatsoever. Below is a printout of "xinput list". I've also attached output files for devices, dmesg, lspci -vnvn, Xorg.0.log, and version.log. I suspect it is an Elantech. I did manage to get one command to print ELAN120x (x being some number). Alas, I don't remember the command now, and none of what I've attached is showing it. (Sorry, I've had a long night of troubleshooting.) The Windows 10 device manager won't even list the brand, even though it's working there. Still, I am fairly confident it's Elan, as that's what ASUS seems to roll with these days.

I've tried various combinations of i8042.* kernel parameters, but to no avail. I've also tried blacklisting i2c_hid. It's like it thinks the touchpad is a keyboard? I'm on Ubuntu 18.04. I've tried the mainstream kernel 4.16.7, also to no avail. The latest release candidate (#4) for 4.17 would not let me log in past SDDM, and I noticed no touchpad miracle while I was in the SDDM login screen.

If you have any further suggestions of what I could try, I would very much appreciate it! Thanks in advance!

xinput list:

⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ASUSTeK Computer Inc. N-KEY Device id=14 [slave pointer (2)]
⎜ ↳ Logitech USB Optical Mouse id=15 [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)]
    ↳ ASUSTeK Computer Inc. N-KEY Device id=12 [slave keyboard (3)]
    ↳ ASUSTeK Computer Inc. N-KEY Device id=13 [slave keyboard (3)]
    ↳ USB2.0 HD UVC WebCam: USB2.0 HD id=16 [slave keyboard (3)]
    ↳ Asus WMI hotkeys id=17 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=18 [slave keyboard (3)]
    ↳ ASUSTeK Computer Inc. N-KEY Device id=19 [slave keyboard (3)]
---
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mustangsally 1416 F.... pulseaudio
CurrentDesktop: KDE
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-05-12 (0 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: ASUSTeK COMPUTER INC. ROG GU501GM
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic root=UUID=899a1b40-3034-4afc-9f21-299d52a753ab ro quiet splash i8042.noloop=1 i8042.nomux=1 i8042.kbdreset=1 i8042.reset vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-20-generic N/A
 linux-backports-modules-4.15.0-20-generic N/A
 linux-firmware 1.173
Tags: bionic
Uname: Linux 4.15.0-20-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/16/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: GU501GM.301
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: GU501GM
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrGU501GM.301:bd03/16/2018:svnASUSTeKCOMPUTERINC.:pnROGGU501GM:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnGU501GM:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: ROG
dmi.product.name: ROG GU501GM
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.