启用 Debian 测试和 SecureBoot 后：
我需要签署 VirtualBox 模块，如命令的输出vboxconfig所示：
vboxdrv.sh: Stopping VirtualBox services.
vboxdrv.sh: Starting VirtualBox services.
vboxdrv.sh: You must sign these kernel modules before using VirtualBox:
vboxdrv vboxnetflt vboxnetadp
See the documenatation for your Linux distribution..
vboxdrv.sh: Building VirtualBox kernel modules.
vboxdrv.sh: failed: modprobe vboxdrv failed. Please use 'dmesg' to find out why.
There were problems setting up VirtualBox. To re-start the set-up process, run
/sbin/vboxconfig
as root. If your system is using EFI Secure Boot you may …