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I installed some weeks ago Oracle Virtual Box 6.1 to Ubuntu 20.04.1 without any problems. Since 10 January 2021 I have tried to install it to to my backup computer with the same configuration but it does not work. I have followed many instructions I have found with Google, but without success.

My conclusion is that something has been updated in Virtual Box or Ubuntu since my last installation which makes the VB broken. Has anybody else this problem with installing Oracle Virtual Box 6.1 to Ubuntu 20.04.1 and know how to solve it?

As my last trial I tried the official VB page instructions on https://www.virtualbox.org/wiki/Linux_Downloads and I followed "Debian-based Linux distributions" by using "focal" in "mydist"

But when I try to open a new box I get error:


Kernel driver not installed (rc=-1908)

The VirtualBox Linux kernel driver is either not loaded or not set up correctly. Please try setting it up again by executing

'/sbin/vboxconfig'

as root.

If your system has EFI Secure Boot enabled you may also need to sign the kernel modules (vboxdrv, vboxnetflt, vboxnetadp, vboxpci) before you can load them. Please see your Linux system's documentation for more information.

where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.


I tried : sudo /sbin/vboxconfig

But I got a serie of other and errors and tried to solve with Google, but they are too long to describe.

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  • 1
    Disable secure boot. Jan 16, 2021 at 5:35
  • Why not use the default repository version? It's 6.1 too.
    – guiverc
    Jan 16, 2021 at 6:02

1 Answer 1

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This sounds related to the 5.8 kernel issues.

If you boot into the latest working 5.4 kernel it will work.

Several bugs have been reported on the issue: https://bugs.launchpad.net/ubuntu?field.searchtext=virtualbox+kernel

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