[paulv]

My experience as a long time Linux user (since 1997, so admittedly stuck with some bad habits from when things were actually hard to get working) has been that things are kind of confusing if you deviate from the golden path, but if you are on the golden path you won't ever notice that it is turned on.

The laptops I have gotten from eg Dell with Linux pre installed have just worked. Machines I have upgraded through many versions of Ubuntu (lts versions of 16-24) were weirdly broken for a while when I first turned secure boot on while I figured it out, but that seemed reasonable for such a pathological case. Machines I have installed Debian on in the last few years have been fine, except for some problems when I was booting from a software raid array, but that is because I was using 2 identical drives and I kept getting them confused in the UEFI boot configuration.

I have not used them on machines with nvidia, vbox, or other out-of kernel-tree modules though.