I have arch and Ubuntu and windows 10 installed on my system. I had installed Ubuntu before arch hence I already had the grub menu offered by the Ubuntu. But after installing I can see another bootable entry in BIOS.
The grub entry from Ubuntu shows arch as one of the options to boot, but just loads blank screen. In short I cannot boot from the grub entry of arch from the grub menu installed from Ubuntu.
But from arch's menu I can boot into all the available entries.
How do I fix this issue of not being able to boot into Arch from the grub menu from Ubuntu.