kunami: I believe that you updated your system and maybe you didn't have "linux-headers-generic" installed, therefore when you upgraded the kernel, its kernel headers were not automatically installed and DKMS couldn't build the kernel module.
kunami: I believe that you updated your system and maybe you didn't have "linux- headers- generic" installed, therefore when you upgraded the kernel, its kernel headers were not automatically installed and DKMS couldn't build the kernel module.