Dual Boot Ubuntu Mate + Arch linux

Hi there! I'm new to the Ubuntu Mate and I have no experience with this system, so I installed Ubuntu Mate and my Grub2 menu have an option to load to the ArcoLInux (Arch based) but when I chose it then I can see black screen only, so I don't know how to fix it, help me please. Also, when use efibootmgr utility and use ArcoLinux's grub2 menu then I have no option to use Ubuntu Mate, only Ubuntu's grub able to watch Arco but does not load it.

PS. I use EFI system with Intel CPU and one HDD

Try sudo update-grub from the Ubuntu system

Either that :point_up_2:, or when you are in Arco Linux you could do,
sudo grub-mkconfig -o /boot/grub/grub.cfg to get Ubuntu listed in Arco's grub menu.

Well, it makes possible to see Arco in grub but it doesn't boot in

Well, I carefully was looking into this screenshot and I solve it, that was pretty easy, I just write ubuntu's partition down to the config

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