Hello I have a Toshiba Portege r930 with 8 GB of RAM, 320 GB HDD, and core i3 processor running Ubuntu 15.04. On kernel 4.0.5 my Virtualbox dkms works fine and the virtul machines start up correctly however in kernel 4.1 I get the following: 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

/etc/init.d/vboxdrv setup

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.


Result Code: 
NS_ERROR_FAILURE (0x80004005)
IMachine {480cf695-2d8d-4256-9c7c-cce4184fa048}

Also the dkms under kernel 4.1 will not install correctly and I get the following error message:

ERROR (dkms apport): kernel package linux-headers-4.1.0-040100-generic is not supported
Error! Bad return status for module build on kernel: 4.1.0-040100-generic (x86_64)
Consult /var/lib/dkms/virtualbox/4.3.26/build/make.log for more information.

Now my question: Is this a virtualbox error a kernel one? Also is there any way for me to fix this or do I have to wait for the programmers of the offending program/kernel to fix this?

  • Why do you use an unsupported kernel? Many other modules may not build as well. There must be a good reason to use it. – Pilot6 Jun 23 '15 at 14:36

Version 4.3.28 should work just fine with Linux 4.1.

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