I have installed the virtual box 5.2.12 on my Macbook (High Sierra)
Then I've installed Ubuntu thanks to
So far so good even though it is really slow.
Then I've installed (
sudo apt-get install)
perl in order to install VirtualBox Extension Pack (
Finally reboot the virtual machine and I'm stuck.
[OK] started daemon for power management stopping User Manager for UID 120...
I found similar threads but I did not find the right way to fix it!