I installed the Debian Jessie (testing) system from an around 3-month-old CD. Then I installed virtualbox and while installing it has complained that kernel sources are not found. I’ve installed linux-headers package and all the linux-headers packages that I could have found, but still no luck. I kept getting the following message:
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
as root. If it is available in your distribution, you should install the DKMS package first. This package keeps track of Linux kernel changes and recompiles the vboxdrv kernel module if necessary.
/etc/init.d/vboxdrv didn’t even exist! As I knew VirtualBox used DKMS, I did aptitude reinstall virtualbox-dkms, and it still outputted “Module build for the currently running kernel was skipped since the kernel source for this kernel does not seem to be installed.” I even installed linux-source – it didn’t help. So what was it?
My distribution had an older kernel, as it was on the CD I installed everything from. Since then, things changed – 3.13 was replaced by 3.14. The repository only had linux headers for 3.14 – and when I installed linux-headers metapackage, I installed headers for 3.14, even though system used the 3.13 kernel. So – when a vboxdrv can’t be build, check if you really have headers for the kernel version you are using =)
Now I just need to learn how to read properly. And to reboot my PC =)