[syslinux] UEFI not successful

[solarflow99]

Hi, I am trying to PXE boot linux in UEFI mode, and it doesn't even work at
all when using syslinux.efi from the latest Fedora package
(syslinux-efi64-6.04-0.22.fc36.x86_64).
I have to use bootx64.efi just to get the menu to show up.  Even then it
loads vmlinux, and then just hangs trying to load initrd.img.

in.tftpd[2197733]: RRQ from 192.168.10.240 filename
uefi64/syslinux/syslinux.efi
in.tftpd[2197733]: tftp: client does not accept options
in.tftpd[2197734]: RRQ from 192.168.10.240 filename
uefi64/syslinux/syslinux.efi
in.tftpd[2197734]: Client 192.168.10.240 finished
uefi64/syslinux/syslinux.efi