Hello all! I'm testing openSUSE (and SLES) on ARM64 servers and I ran into an issue with the default DT integrated into the UEFI of my server (this problem is investigated by Matthias Brugger). To workaround my problem, I had to load a custom DT using the 'devicetree' option of grub2. But the main problem is that I didn't find a way to add it properly in the grub.cfg file without hacking the file (which is very bad)! So, I've made a small patch to add a new option called GRUB_DEVICETREE_FILE in /etc/default/grub file. I also compiled a new grub2 version with this patch and tested it successfully on my servers (https://build.opensuse.org/package/show/home:ldevulde:branches:Base:System/g...). I opened a bug/fate on the official grub bugtracker (https://savannah.gnu.org/bugs/?48358) but it seems to have low activity... I plan to submit my change to the official openSUSE grub2 version but it could interesting to have some feedback before :-) PS: I know that a 'dtb' option exists in the kernel for loading a custom DT from efi but I wasn't able to make it work. And I think it's easier and more cleaner to use the grub2 option. Regards, Loic