Can't install virtualbox in Arch - virtualbox

Question

I have tried to install Virtualbox on Arch(4.7.0-1) using pacman and everything seems to go fine until I try to run it. I get the following message
WARNING: The vboxdrv kernel module is not loaded. Either there is no module
available for the current kernel (4.7.0-1-ARCH) or it failed to
load. Please recompile the kernel module and install it by
sudo /sbin/vboxconfig
You will not be able to start VMs until this problem is fixed.
VirtualBox: supR3HardenedMainGetTrustedMain: dlopen("/usr/lib/virtualbox/VirtualBox.so",) failed: /usr/lib/libQt5Core.so.5: file too short
Any thoughts on where I should start looking to debug this?

Answer 1

Since version 5.0.16, virtualbox-host-modules-arch and virtualbox-host-dkms use systemd-modules-load.service to load all four VirtualBox modules at boot time.
To load the module manually, run: modprobe vboxdrv
https://wiki.archlinux.org/index.php/VirtualBox#Load_the_VirtualBox_kernel_modules

Answer 2

This answer was tested only in Ubuntu and Debian 9 in my case, but maybe can works for you.
I think the problem is that the vboxdrv module is not signed and therefore not loaded with the kernel. This will happen if your computer has the SecureBoot mode activated, something very common in modern equipment.
That's why I get this error opening any machine in the Virtual Box
Kernel driver not installed (rc=-1908)
Do the following steps to sign a driver, and it is loaded as a kernel module:
1. Install the mkutil package to be able to do signed.
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install mokutil
2. generate the signature file:
openssl req -new -x509 -newkey rsa:2048 -keyout MOK.priv -outform DER -out MOK.der -nodes -days 36500 -subj "/CN=VirtualBox/"
3. Then add it to the kernel:
sudo /usr/src/linux-headers-$(uname -r)/scripts/sign-file sha256 ./MOK.priv ./MOK.der $(modinfo -n vboxdrv)
4. Register it for the Secure Boot.
IMPORTANT! That will ask you for a password, put the one you want, you will only have to use it once in the next reboot.
sudo mokutil --import MOK.der
5. Finally, restart the computer. A blue screen will appear with a keyboard wait, press the key that asks you to interrupt the boot.
When you are inside the blue screen, select
Enroll MOK > Continue > Yes > and it will ask you for the password
that you have previously entered, you will enter it and you will be informed that the operation has been completed successfully.
Now your operating system will start and you can now use VirtualBox without problem :)
Hope this help someone.

Answer 3

Open Terminal - Verify version / codename
Code:
lsb_release -a
Using whatever plain text editors like gedit/scite/bash
Code:
sudo gedit /etc/apt/sources.list
Add the following line to your /etc/apt/sources.list:
Code:
deb http://download.virtualbox.org/virtualbox/debian xenial contrib
Save and Close
Add Key, and combine with Downloading and Registering;
Code:
wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add -
Make sure DKMS is installed. May need to re-install to current kernal.
Code:
dkms status
You might encounter an error at this point complaining about linux-headers, simply download the header package by apt-get install linux-headers-5.4.0-28-generic
Make sure Computer and OS is upto date
Code:
sudo apt-get autoclean sudo apt-get clean sudo apt-get autoremove sudo apt-get update sudo apt-get upgrade
Rebuild all DKMS modules for the currently running kernel:
Code:
dkms autoinstall
Install Latest Version of VirtualBox
Code:
sudo apt-get install virtualbox