(However 18.04.1 seems to freeze when shutting down from menu, I have to hard-shut it off). When turning on light with 18.04.1, it is off again after rebooting into 18.10. The keyboard backlight works perfectly when booting from the 18.04.1 desktop live image. In case it matters, Nvidia binary drivers are installed but Nvidia is switched off via Prime setting in nvidia-settings. This is the same in X and Wayland session. Kernel version is linux-image- 4.17.0- 9-generic The gnome-shell pop-up icon for the keyboard backlight appears for both keys, but the icon's 'progress' bar is not visible. > Keyboard backlight should come on or change but doesn't. Press Fn+F3/F4 in fresh install from current Cosmic desktop image, fully updated