I've been having the same issues as manitou and cedric, and using david's boot.ini also did not work. But, I mixed a bit of david's boot.ini with the original (leaving some things out also) and now it works! Here is my boot.ini, if it will maybe help someone:
ODROIDXU-UBOOT-CONFIG
# U-Boot Parameters (DO NOT MODIFY)
setenv version 4.14
setenv zimage boot/linux
setenv fdtbin boot/exynos5422-odroidxu4.dtb
setenv uInitrd boot/uInitrd
# --- Screen Configuration for HDMI --- #
# ---------------------------------------
# Uncomment only ONE line! Leave all commented for automatic selection.
# Uncomment only the setenv line!
# ---------------------------------------
# ODROID-VU forced resolution
# setenv videoconfig "video=HDMI-A-1:1280x800@60"
# -----------------------------------------------
# ODROID-VU forced EDID
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/1280x800.bin"
# -----------------------------------------------
# 1920x1080 (1080P) with monitor provided EDID information. (1080p-edid)
setenv videoconfig "video=HDMI-A-1:1920x1080@60"
# -----------------------------------------------
# 1920x1080 (1080P) without monitor data using generic information (1080p-noedid)
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/1920x1080.bin"
# -----------------------------------------------
# 1920x1080 50hz (1080P) with monitor provided EDID information. (1080p 50hz-edid)
# setenv videoconfig "video=HDMI-A-1:1920x1080@50"
# -----------------------------------------------
# 1920x1080 50hz (1080P) without monitor data using generic information (1080p 50hz-noedid)
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/1920x1080_50hz.bin"
# -----------------------------------------------
# 1440x900 with monitor provided EDID information.
# setenv videoconfig "video=HDMI-A-1:1440x900@60"
# -----------------------------------------------
# 1440x900 without monitor data using generic information
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/1440x900.bin"
# -----------------------------------------------
# 1280x1024 without monitor data using generic information
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/1280x1024.bin"
# -----------------------------------------------
# 1280x720 (720P) with monitor provided EDID information. (720p-edid)
# setenv videoconfig "video=HDMI-A-1:1280x720@60"
# -----------------------------------------------
# 1280x720 (720P) without monitor data using generic information (720p-noedid)
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/1280x720.bin"
# -----------------------------------------------
# 1024x768 without monitor data using generic information
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/1024x768.bin"
# -----------------------------------------------
# 1024x600 without monitor data using generic information (ODROID VU7+)
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/1024x600.bin"
# -----------------------------------------------
# 800x600 without monitor data using generic information
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/800x600.bin"
# -----------------------------------------------
# 800x480 without monitor data using generic information (ODROID 7")
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/800x480.bin"
# -----------------------------------------------
# 720x576 without monitor data using generic information
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/720x576.bin"
# -----------------------------------------------
# 720x480 without monitor data using generic information
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/720x480.bin"
# -----------------------------------------------
# 640x480 without monitor data using generic information
# setenv videoconfig "drm_kms_helper.edid_firmware=edid/640x480.bin"
# --- HDMI / DVI Mode Selection ---
# ------------------------------------------
# - HDMI Mode
setenv vout "hdmi"
# - DVI Mode (disables sound over HDMI as per DVI compat)
# setenv vout "dvi"
# --- CPU Governor Setup ---
# Uncomment only one line. New governor is set after 90secs after boot.
# ------------------------------------------
# - Performance (Keep all the CPU's at Maximum frequency)
setenv governor "performance"
# ------------------------------------------
# - Ondemand
# setenv governor "ondemand"
# ------------------------------------------
# - Interactive (Pretty much just like ondemand with more possible customization via sysfs.)
# setenv governor "interactive"
# ------------------------------------------
# - Conservative (Like ondemand, but do the frequency transitions more slowly, great for battery powered applications)
# setenv governor "conservative"
# ------------------------------------------
# - Powersave (Keeps the CPU's to the lowest possible temps)
# setenv governor "powersave"
# --- HDMI CEC Configuration ---
# ------------------------------------------
setenv cecenable "false" # false or true
# set to true to enable HDMI CEC
#------------------------------------------------------------------------------
#
# HDMI Hot Plug detection
#
#------------------------------------------------------------------------------
#
# Forces the HDMI subsystem to ignore the check if the cable is connected or
# not.
# false : disable the detection and force it as connected.
# true : let cable, board and monitor decide the connection status.
#
# default: true
#
#------------------------------------------------------------------------------
setenv HPD "false"
setenv hdmi_phy_control "HPD=${HPD} vout=${vout}"
if test "${cecenable}" = "false"; then fdt rm /soc/cec@101B0000; fi
setenv dtb_addr_r "0x44000000"
setenv dtbo_addr_r "0x48000000"
setenv zimage_addr_r 0x40008000
setenv uInitrd_addr_r 0x42000000
setenv fdtbin_addr_r 0x44000000
setenv config_addr_r "0x4B000000"
setenv fdt_high "0xffffffff"
# load config.ini
load mmc 0:1 ${config_addr_r} config.ini \
&& ini generic ${config_addr_r}
# DRAM Frequency (lpddr3 available frequency list - 933/825/728/633)
setenv ddr_freq 933
# set DDR frequency
dmc ${ddr_freq}
# Default boot arguments
setenv bootrootfs "label=RECALBOX"
setenv console "console=ttySAC2,115200n8 consoleblank=0 vt.global_cursor_default=0"
# boot commands
fatload mmc 0:1 ${zimage_addr_r} ${zimage}
fatload mmc 0:1 ${uInitrd_addr_r} ${uInitrd}
fatload mmc 0:1 ${fdtbin_addr_r} ${fdtbin}
fdt addr ${dtb_addr_r}
if test "${cecenable}" = "false"; then fdt rm /cec@101B0000; fi
setenv bootargs "${bootrootfs} ${console} governor=${governor} ${videoconfig} ${hdmi_phy_control}"
# load overlays from config.ini
if test "x${overlay_profile}" != "x"; then
ini overlay_${overlay_profile} ${config_addr_r}
fi
if test "x{overlays}" != "x"; then
fdt resize ${overlay_resize}
for overlay in ${overlays}; do
load mmc 0:1 ${dtbo_addr_r} overlays/${overlay}.dtbo \
&& fdt apply ${dtbo_addr_r}
done
fi
bootz ${zimage_addr_r} ${uInitrd_addr_r} ${fdtbin_addr_r}
