Comment 85 for bug 1784485

I managed to solve it in my Asus ZenBook UX433F. I'm running Ubuntu 18.04.
I upgraded the Kernel to v4.19.11 as to Jorge Castro's answer to this question:

https://askubuntu.com/questions/119080/how-to-update-kernel-to-the-latest-mainline-version-without-any-distro-upgrade

Here are the exact steps I followed:

1. Download the appropriate files from:

https://kernel.ubuntu.com/~kernel-ppa/mainline/

For example:

linux-headers-4.19.11-041911_4.19.11-041911.201812191931_all.deb
linux-headers-4.19.11-041911-generic_4.19.11-041911.201812191931_amd64.deb
linux-image-unsigned-4.19.11-041911-generic_4.19.11-041911.201812191931_amd64.deb
linux-modules-4.19.11-041911-generic_4.19.11-041911.201812191931_amd64.deb

2. Install each one in the appropriate order:

sudo dpkg -i linux-headers-4.19.11-041911_4.19.11-041911.201812191931_all.deb
sudo dpkg -i linux-headers-4.19.11-041911-generic_4.19.11-041911.201812191931_amd64.deb
sudo dpkg -i linux-modules-4.19.11-041911-generic_4.19.11-041911.201812191931_amd64.deb
sudo dpkg -i linux-image-unsigned-4.19.11-041911-generic_4.19.11-041911.201812191931_amd64.deb

3. Restart. In GRUB choose "Advanced options for Ubuntu". Select the new Kernel version.

Cheers