I can confirm that I saw this issue with the server forcibly switched to EFI only, and using grub-efi.
I cannot easily reproduce this because the system is in production use, but I will nevertheless send a report to Supermicro with my findings, so they can try to reproduce it on identical hardware and with 15.10 in EFI mode. Supermicro are usually very responsive and provide fixed BIOS within a very reasonable time frame.
Hi rodsmith,
thanks a lot for your follow-up analysis.
I can confirm that I saw this issue with the server forcibly switched to EFI only, and using grub-efi.
I cannot easily reproduce this because the system is in production use, but I will nevertheless send a report to Supermicro with my findings, so they can try to reproduce it on identical hardware and with 15.10 in EFI mode. Supermicro are usually very responsive and provide fixed BIOS within a very reasonable time frame.