Pi4 Unable to set resolution to 3840x2160p @ 24 Hz

klure84 · July 21, 2020 at 12:02 PM

Hi.

Trying to set resolution to 3840x2160p @ 24 Hz in kodi, but i only get blank screen on TV. (It does not say "no signal")

EDID read with tvservice -d:

# edidparser edid.dat | grep 2160p

HDMI:EDID found CEA format: code 97, 3840x2160p @ 60Hz

HDMI:EDID found CEA format: code 96, 3840x2160p @ 50Hz

HDMI:EDID found CEA format: code 95, 3840x2160p @ 30Hz

HDMI:EDID found CEA format: code 94, 3840x2160p @ 25Hz

HDMI:EDID found CEA format: code 93, 3840x2160p @ 24Hz

HDMI:EDID CEA mode (93) 3840x2160p @ 24 Hz with pixel clock 297 MHz has a score of 423130

HDMI:EDID CEA mode (94) 3840x2160p @ 25 Hz with pixel clock 297 MHz has a score of 439720

HDMI:EDID CEA mode (95) 3840x2160p @ 30 Hz with pixel clock 297 MHz has a score of 522664

HDMI:EDID CEA mode (96) 3840x2160p @ 50 Hz with pixel clock 594 MHz has a score of 356776

HDMI:EDID CEA mode (97) 3840x2160p @ 60 Hz with pixel clock 594 MHz has a score of 423131

But this command does not list mode 93-96?

tvservice -m CEA

Group CEA has 24 modes:

mode 1: 640x480 @ 60Hz 4:3, clock:25MHz progressive

mode 2: 720x480 @ 60Hz 4:3, clock:27MHz progressive

mode 3: 720x480 @ 60Hz 16:9, clock:27MHz progressive

mode 4: 1280x720 @ 60Hz 16:9, clock:74MHz progressive

mode 5: 1920x1080 @ 60Hz 16:9, clock:74MHz interlaced

mode 6: 720x480 @ 60Hz 4:3, clock:27MHz x2 interlaced

mode 7: 720x480 @ 60Hz 16:9, clock:27MHz x2 interlaced

(prefer) mode 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive

mode 17: 720x576 @ 50Hz 4:3, clock:27MHz progressive

mode 18: 720x576 @ 50Hz 16:9, clock:27MHz progressive

mode 19: 1280x720 @ 50Hz 16:9, clock:74MHz progressive

mode 20: 1920x1080 @ 50Hz 16:9, clock:74MHz interlaced

mode 21: 720x576 @ 50Hz 4:3, clock:27MHz x2 interlaced

mode 22: 720x576 @ 50Hz 16:9, clock:27MHz x2 interlaced

mode 31: 1920x1080 @ 50Hz 16:9, clock:148MHz progressive

mode 32: 1920x1080 @ 24Hz 16:9, clock:74MHz progressive

mode 33: 1920x1080 @ 25Hz 16:9, clock:74MHz progressive

mode 34: 1920x1080 @ 30Hz 16:9, clock:74MHz progressive

mode 80: 1680x720 @ 25Hz 64:27 (21:9), clock:59MHz progressive

mode 88: 2560x1080 @ 30Hz 64:27 (21:9), clock:118MHz progressive

mode 97: 3840x2160 @ 60Hz 16:9, clock:594MHz progressive

mode 98: 4096x2160 @ 24Hz unknown AR, clock:297MHz progressive

mode 109: 0x0 @ 0Hz 16:9, clock:0MHz progressive

mode 110: 0x0 @ 0Hz 16:9, clock:0MHz progressive

I am able to set the resolution to 3840x2160 @ 50Hz and 60Hz, but 30Hz and down does not work.

**Da Flex** · July 21, 2020 at 11:50 PM Official Post

Add this lines to config.txt:

Code

hdmi_group=1
hdmi_mode=93

klure84 · July 22, 2020 at 6:57 AM

Quote from Da Flex
Add this lines to config.txt:
Code
hdmi_group=1
hdmi_mode=93

Tried this on a different 4k TV, and there is no problem The TV I am having this issue with is a Philips 43PUS6754 which should support these modes.

Same thing still happens after I added these lines (and rebooted).

When I whitelist only 3840x2160p 50/60Hz + all 1920x1080p resolutions i am able to play 2160p/23.98Hz material with 1080p/23.98Hz output to TV, and 2160p/50Hz works fine with original resolution/refresh rate. But I cannot set resolution or play video with 2160p/30-24-23,98Hz natively.

My config.txt file now:

Code

LibreELEC (official): 9.2.3 (RPi4.arm)
LibreELEC-1etg:~ # more /flash/config.txt
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2009-2014 Stephan Raue (stephan@openelec.tv)
# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
################################################################################
# Bootloader configuration - config.txt
################################################################################

################################################################################
# Memory (System/GPU configuration )
################################################################################

# Default GPU memory split - at least 288M is needed for some 4k HEVC files
gpu_mem=320

################################################################################
# For overclocking and various other settings, see:
# https://www.raspberrypi.org/documentation/configuration/config-txt.md
################################################################################
# Set 'force_turbo=1' to disable dynamic overclocking and enable overclocking always.
force_turbo=0

# Force HDMI even if unplugged or powered off
# hdmi_force_hotplug=1

# Doesn't sent initial active source message.
# Avoids bringing CEC (enabled TV) out of standby and channel switch when
# rebooting.
hdmi_ignore_cec_init=1

hdmi_enable_4kp60=1
hdmi_group=1
hdmi_mode=93
################################################################################
# End of default configuration
################################################################################

################################################################################
# Include distribution specific config file if it exists.
################################################################################
[all]
include distroconfig.txt

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**Da Flex** · July 22, 2020 at 4:56 PM Official Post

Activate hdmi_force_hotplug=1.

Deactivate hdmi_enable_4kp60=1.

**smp** · July 22, 2020 at 5:21 PM

Can you save the EDID to a file and post it here?

tvservice -d edid.dat

klure84 · July 22, 2020 at 8:08 PM

Here is the output from edidparser. Also added as attachment.

Code

Parsing edid-philips.dat...
HDMI:EDID version 1.3, 1 extensions, screen size 144x81 cm
HDMI:EDID features - videodef 0x80 !standby !suspend !active off; colour encoding:RGB444|YCbCr422; sRGB is not default colourspace; preferred format is native; does not support GTF
HDMI:EDID found monitor name descriptor tag 0xfc
HDMI:EDID monitor name is Philips_FTV
HDMI:EDID found monitor range descriptor tag 0xfd
HDMI:EDID monitor range offsets: V min=0, V max=0, H min=0, H max=0
HDMI:EDID monitor range: vertical is 48-62 Hz, horizontal is 15-70 kHz, max pixel clock is 600 MHz
HDMI:EDID monitor range does not support GTF
HDMI:EDID found preferred CEA detail timing format: 1920x1080p @ 60 Hz (16)
HDMI:EDID found CEA detail timing format: 1920x1080p @ 50 Hz (31)
HDMI:EDID established timing I/II bytes are 21 08 00
HDMI:EDID found DMT format: code 4, 640x480p @ 60 Hz in established timing I/II
HDMI:EDID found DMT format: code 9, 800x600p @ 60 Hz in established timing I/II
HDMI:EDID found DMT format: code 16, 1024x768p @ 60 Hz in established timing I/II
HDMI:EDID standard timings block x 8: 0xB300 9500 A940 9040 8100 8180 8140 0101 
HDMI:EDID found DMT format: code 58, 1680x1050p @ 60 Hz (16:10) in standard timing 0
HDMI:EDID found DMT format: code 47, 1440x900p @ 60 Hz (16:10) in standard timing 1
HDMI:EDID found DMT format: code 51, 1600x1200p @ 60 Hz (4:3) in standard timing 2
HDMI:EDID found DMT format: code 42, 1400x1050p @ 60 Hz (4:3) in standard timing 3
HDMI:EDID found DMT format: code 28, 1280x800p @ 60 Hz (16:10) in standard timing 4
HDMI:EDID found DMT format: code 35, 1280x1024p @ 60 Hz (5:4) in standard timing 5
HDMI:EDID found DMT format: code 32, 1280x960p @ 60 Hz (4:3) in standard timing 6
HDMI:EDID parsing v3 CEA extension 0
HDMI:EDID monitor support - underscan IT formats:yes, basic audio:yes, yuv444:yes, yuv422:yes, #native DTD:1
HDMI:EDID found CEA format: code 97, 3840x2160p @ 60Hz 
HDMI:EDID found CEA format: code 96, 3840x2160p @ 50Hz 
HDMI:EDID found CEA format: code 95, 3840x2160p @ 30Hz 
HDMI:EDID found CEA format: code 94, 3840x2160p @ 25Hz 
HDMI:EDID found CEA format: code 93, 3840x2160p @ 24Hz 
HDMI:EDID found CEA format: code 16, 1920x1080p @ 60Hz 
HDMI:EDID found CEA format: code 31, 1920x1080p @ 50Hz 
HDMI:EDID found CEA format: code 32, 1920x1080p @ 24Hz 
HDMI:EDID found CEA format: code 34, 1920x1080p @ 30Hz 
HDMI:EDID found CEA format: code 33, 1920x1080p @ 25Hz 
HDMI:EDID found CEA format: code 20, 1920x1080i @ 50Hz 
HDMI:EDID found CEA format: code 4, 1280x720p @ 60Hz 
HDMI:EDID found CEA format: code 19, 1280x720p @ 50Hz 
HDMI:EDID found CEA format: code 18, 720x576p @ 50Hz 
HDMI:EDID found CEA format: code 17, 720x576p @ 50Hz 
HDMI:EDID found CEA format: code 2, 720x480p @ 60Hz 
HDMI:EDID found CEA format: code 22, 1440x576i @ 50Hz 
HDMI:EDID found CEA format: code 7, 1440x480i @ 60Hz 
HDMI:EDID found CEA format: code 21, 1440x576i @ 50Hz 
HDMI:EDID found CEA format: code 5, 1920x1080i @ 60Hz 
HDMI:EDID found CEA format: code 3, 720x480p @ 60Hz 
HDMI:EDID found CEA format: code 6, 1440x480i @ 60Hz 
HDMI:EDID found CEA format: code 1, 640x480p @ 60Hz 
HDMI:EDID found audio format 2 channels PCM, sample rate: 32|44|48 kHz, sample size: 16|20|24 bits
HDMI:EDID found audio format 6 channels AC3, sample rate: 32|44|48 kHz, bitrate: 640 kbps
HDMI:EDID found audio format 6 channels DTS, sample rate: 32|44|48 kHz, bitrate: 1536 kbps
HDMI:EDID found audio format 8 channels Dobly Digital+, sample rate: 32|44|48 kHz, codec define: 1
HDMI:EDID found audio format 1 channels Extended, sample rate: 44|48 kHz, extended type: ATRAC
HDMI:EDID found audio format 8 channels DTS-HD, sample rate: 44|48|88|96|176|192 kHz, codec define: 1
HDMI:EDID found audio format 8 channels MLP, sample rate: 48 kHz, codec define: 3
HDMI:EDID found HDMI VSDB length 15
HDMI:EDID HDMI VSDB has physical address 2.0.0.0
HDMI:EDID HDMI VSDB supports AI:no, dual link DVI:no
HDMI:EDID HDMI VSDB deep colour support - 48-bit:no 36-bit:yes 30-bit:yes DC_yuv444:yes
HDMI:EDID HDMI VSDB max TMDS clock 300 MHz
HDMI:EDID HDMI VSDB video latency 80 ms
HDMI:EDID HDMI VSDB audio latency 80 ms
HDMI:EDID HDMI VSDB does not support content type
HDMI:EDID HDMI VSDB supports extended resolutions 1,2,3
HDMI:EDID ignoring non HDMI VSDB with IEEE reg 0xc45dd8
HDMI:EDID found Video Capability DB length 2
HDMI:EDID video capability: CE:1 IT:2 PT:0 QS:1
HDMI:EDID extended data block YCbCr420CapMap - length 2
HDMI:EDID extended data block tag 0x05 length 3 not supported
HDMI:EDID extended data block tag 0x06 length 3 not supported
HDMI:EDID extended data block tag VendorSpecificVideo - length 5
HDMI:EDID extended data block tag VendorSpecificVideo - length 11
HDMI:EDID extended data block VendorSpecificAudio - length 6
HDMI:EDID filtering formats with pixel clock unlimited MHz or h. blanking unlimited
HDMI:EDID best score mode initialised to CEA (1) 640x480p @ 60 Hz with pixel clock 25 MHz (score 0)
HDMI:EDID best score mode is now CEA (1) 640x480p @ 60 Hz with pixel clock 25 MHz (score 61864)
HDMI:EDID best score mode is now CEA (2) 720x480p @ 60 Hz with pixel clock 27 MHz (score 66472)
HDMI:EDID CEA mode (3) 720x480p @ 60 Hz with pixel clock 27 MHz has a score of 66472
HDMI:EDID best score mode is now CEA (4) 1280x720p @ 60 Hz with pixel clock 74 MHz (score 135592)
HDMI:EDID DMT mode (4) 640x480p @ 60 Hz with pixel clock 25 MHz has a score of 18432
HDMI:EDID best score mode is now CEA (5) 1920x1080i @ 60 Hz with pixel clock 74 MHz (score 149416)
HDMI:EDID CEA mode (6) 1440x480i @ 60 Hz with pixel clock 27 MHz has a score of 45736
HDMI:EDID CEA mode (7) 1440x480i @ 60 Hz with pixel clock 27 MHz has a score of 45736
HDMI:EDID DMT mode (9) 800x600p @ 60 Hz with pixel clock 40 MHz has a score of 28800
HDMI:EDID best score mode is now CEA (16) 1920x1080p @ 60 Hz with pixel clock 148 MHz (score 5398248)
HDMI:EDID DMT mode (16) 1024x768p @ 60 Hz with pixel clock 65 MHz has a score of 47185
HDMI:EDID CEA mode (17) 720x576p @ 50 Hz with pixel clock 27 MHz has a score of 66472
HDMI:EDID CEA mode (18) 720x576p @ 50 Hz with pixel clock 27 MHz has a score of 66472
HDMI:EDID CEA mode (19) 1280x720p @ 50 Hz with pixel clock 74 MHz has a score of 117160
HDMI:EDID CEA mode (20) 1920x1080i @ 50 Hz with pixel clock 74 MHz has a score of 128680
HDMI:EDID CEA mode (21) 1440x576i @ 50 Hz with pixel clock 27 MHz has a score of 45736
HDMI:EDID CEA mode (22) 1440x576i @ 50 Hz with pixel clock 27 MHz has a score of 45736
HDMI:EDID DMT mode (28) 1280x800p @ 60 Hz with pixel clock 83 MHz has a score of 86440
HDMI:EDID CEA mode (31) 1920x1080p @ 50 Hz with pixel clock 148 MHz has a score of 4732360
HDMI:EDID CEA mode (32) 1920x1080p @ 24 Hz with pixel clock 74 MHz has a score of 124532
HDMI:EDID DMT mode (32) 1280x960p @ 60 Hz with pixel clock 108 MHz has a score of 98728
HDMI:EDID CEA mode (33) 1920x1080p @ 25 Hz with pixel clock 74 MHz has a score of 128680
HDMI:EDID CEA mode (34) 1920x1080p @ 30 Hz with pixel clock 74 MHz has a score of 149416
HDMI:EDID DMT mode (35) 1280x1024p @ 60 Hz with pixel clock 108 MHz has a score of 103643
HDMI:EDID DMT mode (42) 1400x1050p @ 60 Hz with pixel clock 121 MHz has a score of 113200
HDMI:EDID DMT mode (47) 1440x900p @ 60 Hz with pixel clock 106 MHz has a score of 102760
HDMI:EDID DMT mode (51) 1600x1200p @ 60 Hz with pixel clock 162 MHz has a score of 140200
HDMI:EDID DMT mode (58) 1680x1050p @ 60 Hz with pixel clock 146 MHz has a score of 130840
HDMI:EDID DMT mode (64) 1792x1344p @ 120 Hz with pixel clock 333 MHz has a score of 72253
HDMI:EDID CEA mode (93) 3840x2160p @ 24 Hz with pixel clock 297 MHz has a score of 423130
HDMI:EDID CEA mode (94) 3840x2160p @ 25 Hz with pixel clock 297 MHz has a score of 439720
HDMI:EDID CEA mode (95) 3840x2160p @ 30 Hz with pixel clock 297 MHz has a score of 522664
HDMI:EDID CEA mode (96) 3840x2160p @ 50 Hz with pixel clock 594 MHz has a score of 356776
HDMI:EDID DMT mode (96) 0x0p @ 0 Hz with pixel clock 0 MHz has a score of 0
HDMI:EDID CEA mode (97) 3840x2160p @ 60 Hz with pixel clock 594 MHz has a score of 423131
HDMI:EDID DMT mode (105) 0x0p @ 0 Hz with pixel clock 0 MHz has a score of 0
HDMI:EDID DMT mode (106) 0x0p @ 0 Hz with pixel clock 0 MHz has a score of 0
HDMI:EDID DMT mode (117) 0x0p @ 0 Hz with pixel clock 0 MHz has a score of 0
HDMI:EDID DMT mode (118) 0x0p @ 0 Hz with pixel clock 0 MHz has a score of 0
HDMI0:EDID preferred mode remained as CEA (16) 1920x1080p @ 60 Hz with pixel clock 148 MHz
HDMI:EDID has HDMI support and audio support
edidparser exited with code 0

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**smp** · July 22, 2020 at 8:46 PM

Maybe your TV does not like RGB @4K 24Hz. Try to test with hdmi_pixel_encoding=3 in config.txt.

klure84 · July 22, 2020 at 9:02 PM

Quote from smp

Maybe your TV does not like RGB @4K 24Hz. Try to test with hdmi_pixel_encoding=3 in config.txt.

That fixed it Could this be a firmware issue with the TV?

tvservice -m CEA still only lists 60Hz of the 2160p resolutions.

HDMI:EDID CEA mode (97) 3840x2160p @ 60 Hz with pixel clock 594 MHz has a score of 423131

**smp** · July 22, 2020 at 9:21 PM

Quote from klure84

Could this be a firmware issue with the TV?

I suppose so.

klure84 · July 22, 2020 at 9:46 PM

RGB Full also works. If RGB limited is default for my TV, should i be ok setting RGB Full? Or should i go with YCbCr limited/full ?

**smp** · July 22, 2020 at 10:05 PM

Quote from klure84

should i be ok setting RGB Full? Or should i go with YCbCr limited/full

RGB full is usually used for PC monitors. Use YCbCr limited.

klure84 · July 22, 2020 at 10:27 PM

Quote from smp

RGB full is usually used for PC monitors. Use YCbCr limited.

Ok. Thank you so much for your help

Pi4 Unable to set resolution to 3840x2160p @ 24 Hz

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