I just set up Arch Linux configured with LVM on LUKS and I am having trouble getting it to work.
This is what I get when it boots:
This is my /boot/loader/entries/arch.conf: (gummiboot)
The problem is it doesn't ask me for the password when the computer boots so it cannot find the root device.
I do have the encrypt hook in /etc/mkinitcpio.conf and the cryptdevice parameter is set up properly according to https://wiki.archlinux.org/index.php/Dm-crypt/System_configuration#Boot_loader (4th bullet point) though I think it is possible I need to set it up according to the 3rd bullet point.