Archlinux是滚动升级的，相对而言比较稳定但是偶然会出现滚挂或个别应用无法使用。（所以我一般都在放假前升级，有Bug也好在假期时修改）。出错场景：Archlinux系统升级内核从4.14升级到4.19错误描述：Kernel driver not installed (rc=-1908)The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please reinstall the kernel module by executing’/sbin/vboxconfig’as root.where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.问题排查：根据错误信息可以看到是内核加载问题。检查升级后的系统内核：uname -r查看已经安装的virtualbox对应的系统内核：pacman -Qe |grep linux结果为：archlinuxcn-keyring 20190315-2linux-firmware 20190313.efd2c1c-1linux414 4.14.109-1linux414-bbswitch 0.8-87linux414-headers 4.14.109-1linux414-nvidia 1:418.43-6发现用的是之前414的linux内核,所以升级到419内核模块：sudo pacman -S linux419-headerssudo pacman -S linux419-virtualbox-host-modules安装后重新加载vbox内核：modprobe vboxdrv我发现在重载内核后启动依旧是报错。于是重启系统尝试，重启后恢复正常。参考链接VirtualBox - ArchWiki