Hey Gerrit!

 GK> I did use legacy/csm for quite some time if available. However,
 GK> meanwhile uefi works fine for me and is actually easier to set up
 GK> and maintain, so I use it on all new machines now.

Undertood.  I am not quite at that point yet but at least I have one working with uefi.  Unfortunetly I cannot get the 4k monitor into kicking in before the boot penguins appear and thus I get only 9 of 16 on the top of the screen which disappear as soon as the higher resolution kicks in.  Not sure it is worth losing sleep over but I'd sure like to see the rest of the penguins which I know are there ... sort of.

Life is good,
Maurice

... Longa¨ ¨onne ¨y l‘s ¨e him con leo¨a worn.
    He is less troubled by longing who knows many songs.
--- GNU bash, version 5.1.16(1)-release (x86_64-znver1-linux-gnu)