Comment 89 for bug 1784485

Some additional sysinfo with inxi:

System: Host: mir Kernel: 4.20.0-042000-generic x86_64 bits: 64 Desktop: Gnome 3.30.1
           Distro: Ubuntu 18.10 (Cosmic Cuttlefish)
Machine: Type: Laptop System: ASUSTeK product: ZenBook S UX391UA v: 1.0 serial: <filter>
           Mobo: ASUSTeK model: UX391UA v: 1.0 serial: <filter>
           UEFI [Legacy]: American Megatrends v: UX391UA.301 date: 10/15/2018

BTW, ASUS released recently a new BIOS version, but it still doesn't solve our problem: https://www.asus.com/de/Laptops/ASUS-ZenBook-S-UX391UA/HelpDesk_BIOS/