After a reboot, suddenly Virtualbox will no longer start any virtual machines. The message I get for all the machines is:
Waiting for VM "win7" to power on... VBoxManage: error: The virtual machine 'win7' has terminated unexpectedly during startup with exit code 1 (0x1) VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface IMachine
The example is for Windows 7 machine, but the same is for Windows 10, Salix, Debian etc.
A brave attempt to upgrade to the current Virtualbox (6.1.18) did not help.
So, I uninstalled Virtualbox, rebooted, re-installed, ran
sudo /sbin/vboxconfig and, ... same error.
The kernel module loads correctly, according to
[ 1121.308187] vboxdrv: Found 6 processor cores [ 1121.324431] vboxdrv: TSC mode is Invariant, tentative frequency 3000149185 Hz [ 1121.324434] vboxdrv: Successfully loaded version 6.1.18 (interface 0x00300000) [ 1121.534688] VBoxNetFlt: Successfully started. [ 1121.536415] VBoxNetAdp: Successfully started.
modinfo vboxdrv shows that the module is the right version of Virtualbox and the correct version of the kernel.
The GUI starts normally, but I cannot start virtual machines from it; it provides the same error.
I also tried to create a new machine, to see if there was something wrong with the virtual boxes, but that did not work either.
My system is Salix, so not packages for VirtualBox exist. I've also tried the microlinux packages, but no avail.
I tried most of the solutions I could find on the Internet and Oracle's VirtualBox forum, but no avail. Does anyone here have additional hints, tips or solutions?