Hi everyone, I'm late in this discussion but I may have a solution for those who are in the same case than Alistair Sutter and me before. This solution works if you use the kernel command 'acpi_osi=!" and maybe some else. I had exactly the same issue on my Asus FX503VD with the same config. I tried everything I found on several forums without success... until today!
If you get one of the latest kernel (4.17.2 for me) and remove the kernel parameter 'acpi_osi=!' you should find the elantech touchpad with xinput and use it (for years I hope...) without bugs with the screen backlight... et voilaaaa! Sorry for my frenglish. Maxime -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1777679 Title: ELAN1200 touchpad not working at all with kernel 4.15+; Recognized as ITE 8910 keyboard Status in linux package in Ubuntu: Confirmed Bug description: Laptop is an Asus-GL503VD Touchpad is an ELAN touchpad model 1200. This bug is relative to the Asus-GL503VD and any Asus laptop using the ELAN1200 touchpad. I tried Arch, Debian, Ubuntu 14/16/18, Pop_OS, Sabayon Linux, Fedora. Same problem, touchpad is totally unresponsive. From what I understand the touchpad is being recognized as a keyboard and I cannot get any driver to recognize it: elan-i2c or synaptics. The touchpad is also being recognized as a USB device. This behaviour was consistent on kernels 4.15.0-22, 4.15.0-23 and 4.17.1. Right now trying to make it work on kernel 4.15.0-23 because it seems more "main-stream". Note: I have a keyboard recognized as AT Translated Set 2 keyboard which makes me believe I do not need ITE8910 to be a keyboard. Note2: Been researching LKM development. Managed to make a signed 'hello world' lkm and make it output in dmesg. Willing to help debug/develop the driver for this touchpad. --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ttr 1798 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=7791e5a6-d685-49b9-93d7-017c1abf4b89 InstallationDate: Installed on 2018-06-10 (9 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: ASUSTeK COMPUTER INC. GL503VD NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcEnviron: TERM=screen PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-23-generic root=UUID=98160487-6d8d-429c-830c-035e5faeb890 ro CONFIG_MODVERSIONS=true nvidia.modeset=1 nouveau.modeset=0 acpi=force i8042.reset i8042.nomux i8042.nopnp i8042.noloop ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-23-generic N/A linux-backports-modules-4.15.0-23-generic N/A linux-firmware 1.173.1 Tags: bionic Uname: Linux 4.15.0-23-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/03/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: GL503VD.304 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: GL503VD 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.:bvrGL503VD.304:bd10/03/2017:svnASUSTeKCOMPUTERINC.:pnGL503VD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnGL503VD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: GL dmi.product.name: GL503VD dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1777679/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp