No X after Arch Linux upgrade to Kernal 4.5 in Virtualbox

I am a big Arch Linux fan. I would not use it for production IT, but for personal use. I have Arch Linux in a VirtualBox VM on my Windows 10 Desktop. ArchLinux will not start in X after you upgrade from Kernal 4.4 to 4.5. Arch Linux just hangs.

Until it is fixed, this is a good workaround provided by lyndon [1] :

Edit /etc/default/grub and append

iomem=relaxed

to the GRUB_CMDLINE_LINUX_DEFAULT variable so mine now looks like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet iomem=relaxed"

Then I ran:

sudo grub-mkconfig -o /boot/grub/grub.cfg

This definitely works