efi/idrac blues

From: Daniel Braniss <danny_at_cs.huji.ac.il>
Date: Mon, 09 May 2022 08:18:40 UTC
the host is a Dell R720, at the moment booting diskless, and with either pxeboot or loader.efi,
no matter what magic I try, can’t get the shell output to the SOL console.
the kernel messages show up ok, and also the Login: but no rc/shell output.

any ideas?