Memtest and other things - UEFI sucks - Rest in peace legacy boot!

[Ralf Mardorf]

Hi,

disabling Intel platform trust technology and secure boot works, but
enabling CSM (legacy boot) fails on my new PC. I read that on modern
Intel machines (12. and 13. generation Core) CSM cannot be enabled, when
using the GPU integrated with the CPU. I wonder if this is correct?!

There also seem to be unsolvable issues for Linux multi-boot machines
using syslinux without chainloading, IOW by storing the kernels of all
the installed distros on one partition. For the moment I worked around
this by installing grub2. However, I don't like to use grub2. On the
Arch mailing list somebody recommended to take a look at systemd-boot.
Any thoughts are welcome.

Btw. I installed grub2 when I installed Xubuntu. Even grub2 seemingly
suffers from some efi related issues. Not quite correct, neither
syslinux, nor grub2 suffer from anything at all, the culprit is efi
boot. It's the first time that I cannot chose memtest OOTB, after
installing an Ubuntu flavour. 

[rocketmouse at archlinux ~]$ grep memtest /mnt/m1.xubu20.04/boot/grub/grub.cfg -B1 -A1

### BEGIN /etc/grub.d/20_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###

[rocketmouse at archlinux ~]$ /usr/bin/ls -hl /mnt/m1.xubu20.04/boot/memtest*
-rw-r--r-- 1 root root 179K Feb 14  2020 /mnt/m1.xubu20.04/boot/memtest86+.bin
-rw-r--r-- 1 root root 181K Feb 14  2020 /mnt/m1.xubu20.04/boot/memtest86+.elf
-rw-r--r-- 1 root root 181K Feb 14  2020 /mnt/m1.xubu20.04/boot/memtest86+_multiboot.bin
[rocketmouse at archlinux ~]$

>From askubuntu.com: "Older versions of Memtest86+ do not work in UEFI
mode because they are 16-bit programs. But if you can boot the computer
in BIOS (CSM, legacy) mode, they work."

Just that nowadays CSM enabled automagically gets disabled.

Regards,
Ralf

PS: My new PC case hasn't a buzzer. I read that this isn't unusual
nowadays. That's freakish. I thought that anyone who assembles a PC from
individual components is interested in power-on self-test beep signals.
I placed a repeat order.