ubuntu mate looks fantastic on my 4k TV Sceptre model W55.
TV has CEC enabled. i also tried disabling it but get same display error. TV has hdmi 1.4 or 2.0 mode, i can toggle whichever mode i want as well.
ubuntu GUI doesn’t let me change resolution so i manually force it in boot.ini file.
setenv display_autodetect "false" setenv m "2160p60hz" # Progressive 60Hz
it only works when I turn the TV on first! then turn the C2 on. if i turn TV off, then back on, i get “no signal.” TV shows nothing but blue. i know the C2 is still working because lights are blinking.
when i turn the C2 on first, then i turn TV on, i also get “no signal” as well.
i know for sure it’s not a hardware issue because when i pop a microSD card with LibreElec, it works amazing at 2160p 60hz! i can turn TV on and off nonstop without any issues.
here is my full boot.ini file. i removed a lot of comments for simplicity sake in this post:
ODROIDC2-UBOOT-CONFIG
# Custom modeline!
"1920,1200,154000,74040,60,1920,1968,2000,2080,1200,1202,1208,1235,1,0,1"
# Auto Detection of Monitor settings based on your Screen information
# See: http://odroid.com/dokuwiki/doku.php?id= ... ct_display
setenv display_autodetect "false"
setenv m "1080p60hz" # Progressive 60Hz
setenv m "2160p60hz" # Progressive 60Hz
# setenv m "2160p50hz420" # Progressive 50Hz with YCbCr 4:2:0 (Requires TV/Monitor that supports it)
# setenv m "2160p60hz420" # Progressive 60Hz with YCbCr 4:2:0 (Requires TV/Monitor that supports it)
# HDMI BPP Mode
setenv m_bpp "32"
# HDMI HotPlug Detection control
# Allows you to force HDMI thinking that the cable is connected.
# true = HDMI will believe that cable is always connected
# false = will let board/monitor negotiate the connection status
setenv hpd "true"
# Monitor output
# Controls if HDMI PHY should output anything to the monitor
setenv monitor_onoff "false" # true or false
# Server Mode (aka. No Graphics)
setenv nographics "0"
# Meson Timer
setenv mesontimer "1"
# UHS (Ultra High Speed) MicroSD mode enable/disable
setenv disableuhs "false"
# MicroSD Card Detection enable/disable
setenv mmc_removable "true"
# USB Multi WebCam tweak
setenv usbmulticam "false"
# Disable/Enable ODROID-VU7 Touchscreen
setenv disable_vu7 "false"
# Default Console Device Setting
setenv condev "console=ttyS0,115200n8 console=tty0" # on both
# CPU Frequency / Cores control
setenv maxcpus "4"
# MAX Frequency
setenv max_freq "1536" # 1.536GHz
###########################################
# Boot Arguments
if test "${display_autodetect}" = "true"; then usb pwren; hdmitx edid; fi
if test "${m}" = "custombuilt"; then setenv cmode "modeline=${modeline}"; fi
if test "${disable_vu7}" = "false"; then setenv hid_quirks "usbhid.quirks=0x0eef:0x0005:0x0004"; fi
setenv bootargs "root=UUID=e139ce78-9841-40fe-8823-96a304a09859 rootwait ro ${condev} no_console_suspend hdmimode=${m} ${cmode} m_bpp=${m_bpp} vout=${vout} fsck.repair=yes net.ifnames=0 elevator=noop disablehpd=${hpd} max_freq=${max_freq} maxcpus=${maxcpus} monitor_onoff=${monitor_onoff} disableuhs=${disableuhs} mmc_removable=${mmc_removable} usbmulticam=${usbmulticam} ${hid_quirks}"
# Booting
setenv loadaddr "0x11000000"
setenv dtb_loadaddr "0x1000000"
setenv initrd_loadaddr "0x13000000"
fatload mmc 0:1 ${initrd_loadaddr} uInitrd
fatload mmc 0:1 ${loadaddr} Image
fatload mmc 0:1 ${dtb_loadaddr} meson64_odroidc2.dtb
fdt addr ${dtb_loadaddr}
if test "${mesontimer}" = "0"; then fdt rm /meson_timer; fdt rm /cpus/cpu@0/timer; fdt rm /cpus/cpu@1/timer; fdt rm /cpus/cpu@2/timer; fdt rm /cpus/cpu@3/timer; fi
if test "${mesontimer}" = "1"; then fdt rm /timer; fi
if test "${nographics}" = "1"; then fdt rm /reserved-memory; fdt rm /aocec; fi
if test "${nographics}" = "1"; then fdt rm /meson-fb; fdt rm /amhdmitx; fdt rm /picdec; fdt rm /ppmgr; fi
if test "${nographics}" = "1"; then fdt rm /meson-vout; fdt rm /mesonstream; fdt rm /meson-fb; fi
if test "${nographics}" = "1"; then fdt rm /deinterlace; fdt rm /codec_mm; fi
booti ${loadaddr} ${initrd_loadaddr} ${dtb_loadaddr}
Pls excuse the bad looking code. I used backtick and it’s not showing the code section properly.