Installing kernel 4.16 (see https://wiki.ubuntu.com/Kernel/MainlineBuilds?action=show&redirect=KernelMainlineBuilds) fixed it. But now the wifi adapter is not found.
Installing kernel 4.16 (see https:/ /wiki.ubuntu. com/Kernel/ MainlineBuilds? action= show&redirect= KernelMainlineB uilds) fixed it.
But now the wifi adapter is not found.