尝试安装 VirtualBox 内核模块时出现以下错误：
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Deleting module version: 4.1.18
completely from the DKMS tree.
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Done.
Loading new virtualbox-4.1.18 DKMS files...
Building only for 3.5.0-17-generic
Module build for the currently running kernel was skipped since the
kernel source for this kernel does not seem to be installed.
我已经尝试安装 linux-source 包，但我不确定 Ubuntu 如何处理内核源代码和头文件。
从 Ubuntu 的角度来看如何做到这一点的任何想法？