This morning, I blindly ran an Apt Upgrade. I know you shouldn’t do this blindly, but there it is.

The unexpected consequence of this was that my VirtualBox installation was suddenly unable to boot a guest machine, with the following error:

The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please install virtualbox-dkms package and load the kernel module by executing

modprobe vboxdrv
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.
Continue reading “Reverting to a Previous Kernel in Pop!_OS with kernelstub”