full disk encryption with luks on manjaro xfce

[limxr]

Followed the directions, in the end I reboot to a screen that does ask for my password but when I type its entered into the line below it in plain text, hitting enter doesn't do anything but move to the next line.

after some time modules will start to time out not being able to find firmware so I don't think my text is being entered in the right space.

Any thoughts?

It sounds like the boot process did not wait for the password prompt but just continued.  Do you have rootwait set as a bootarg?  I've attached my boot.txt to see as example.

I do at that and agree that is what it sounds like, heres mine:

setenv macaddr da 19 c8 7a 6d f4

part uuid ${devtype} ${devnum}:${bootpart} uuid
setenv bootargs console=tty1 root=/dev/mapper/cryptroot cryptdevice=UUID=bc3791fa-01e0-471d-9ace-a7cae5035c15:cryptroot:allow-discards rw rootwait quiet append video=eDP-1:1920x1080@60
setenv fdtfile rockchip/rk3399-pinebook-pro.dtb

if load ${devtype} ${devnum}:${bootpart} ${kernel_addr_r} Image; then
  if load ${devtype} ${devnum}:${bootpart} ${fdt_addr_r} dtbs/${fdtfile}; then
    fdt addr ${fdt_addr_r}
    fdt resize
    fdt set /ethernet@fe300000 local-mac-address "[${macaddr}]"
    if load ${devtype} ${devnum}:${bootpart} ${ramdisk_addr_r} initramfs-linux.img; then
      # This upstream Uboot doesn't support compresses cpio initrd, use kernel option to
      # load initramfs
      setenv bootargs ${bootargs} initrd=${ramdisk_addr_r},20M ramdisk_size=10M
    fi;
    booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdt_addr_r};
  fi;
fi

That boot.txt looks fine.  I wonder if the initram was generated correctly with mkinitcpio -P when booted to manjaro sd before you encrypted the root partition?  From a linux os you could use cryptsetup to open the root partition on the sdcard, mount it, and check the etc/mkinitcpio.conf to make sure all the modules and hooks are loaded in order and the compression set to "cat". 

If you need to generate initram again you can probably do so from an arch/manjaro os just make sure the mkinitcpio -P command is using options to point to the sdcard and not the booted os. 

Another way you could do this is to decrypt the root partion on sdcard (cryptsetup-reencrypt /dev/mmcblk1p2 --decrypt) then change boot.txt back to non-luks configuration so you can boot into sdcard again.