Black screen with rpi3 when connected to TV via HDMI

grahamh · 13 February 2021 13:59

Can anyone remind me how to dump the EDID from a Pi?

ooZee · 13 February 2021 14:30

tvservice –d <filename.dat>

grahamh · 13 February 2021 15:18

We feel your pain.

Can you post the output of the command @ooZee posted? Not sure if this is a binary file (my Pi is having a hissy fit, now). If it’s binary you will have to upload it somewhere.

daviddoji · 13 February 2021 17:12

Thx a lot @grahamh

Once again, the logs:

https://paste.osmc.tv/negabahimo

Regarding the edid.dat file, I’ve created and parse it in another computer. The output is this one:
Checksum Correct

Section “Monitor”
Identifier “Panasonic-TV”
ModelName “Panasonic-TV”
VendorName “MEI”
# Monitor Manufactured week 0 of 2009
# EDID version 1.3
# Digital Display
# Display Physical Size not given. Normal for projectors.
Gamma 2.20
Option “DPMS” “false”
Horizsync 15-68
VertRefresh 23-61
# Maximum pixel clock is 150MHz

    #Extension block found. Parsing...
    Modeline        "Mode 18" +hsync +vsync interlace
    Modeline        "Mode 0" +hsync +vsync 
    Modeline        "Mode 1" +hsync +vsync 
    Modeline        "Mode 2" 148.500 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync
    Modeline        "Mode 3" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
    Modeline        "Mode 4" 74.250 1920 2448 2492 2640 1080 1082 1089 1125 +hsync +vsync interlace
    Modeline        "Mode 5" 74.250 1920 2008 2052 2200 1080 1082 1087 1125 +hsync +vsync interlace
    Modeline        "Mode 6" 74.250 1920 2558 2602 2750 1080 1084 1089 1125 +hsync +vsync
    Modeline        "Mode 7" 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync
    Modeline        "Mode 8" 74.250 1280 1390 1420 1650 720 725 730 750 +hsync +vsync
    Modeline        "Mode 9" 27.000 720 732 796 864 576 581 586 625 -hsync -vsync
    Modeline        "Mode 10" 27.027 720 736 798 858 480 489 495 525 -hsync -vsync
    Modeline        "Mode 11" 27.000 720 732 796 864 576 581 586 625 -hsync -vsync
    Modeline        "Mode 12" 27.027 720 736 798 858 480 489 495 525 -hsync -vsync
    Modeline        "Mode 13" 27.000 1440 1464 1590 1728 576 578 581 625 -hsync -vsync interlace
    Modeline        "Mode 14" 27.027 1440 1478 1602 1716 480 484 487 525 -hsync -vsync interlace
    Modeline        "Mode 15" 27.000 1440 1464 1590 1728 576 578 581 625 -hsync -vsync interlace
    Modeline        "Mode 16" 27.027 1440 1478 1602 1716 480 484 487 525 -hsync -vsync interlace
    Modeline        "Mode 17" 25.200 640 656 752 800 480 490 492 525 -hsync -vsync
    Modeline        "Mode 19" +hsync +vsync interlace
    Modeline        "Mode 20" +hsync +vsync 
    Modeline        "Mode 21" +hsync +vsync 
    Option "PreferredMode" "Mode 18"

EndSection

grahamh · 13 February 2021 17:36

Thanks, but I’m out of ideas. Do you have another display available to test it on?

daviddoji · 13 February 2021 18:01

I have a pc monitor, where it’s working fine out-of-the-box. I didn’t have to change anything.
It’s when I connected it to the TV where there is no output.

I guess that I’ll stick to Raspberry OS for the time being, because I don’t understand why it’s not working.

grahamh · 13 February 2021 21:32

Can you send me that raw edid file somehow? The parser you used doesn’t tell me the whole story.

daviddoji · 14 February 2021 08:31

Sorry for the late reply. Sure, you can grab it from here:

Hope you’ll find something else to test.

Quosek · 14 February 2021 11:41

can you try:

turning on TV
switching input to the one connected to kodi
restarting kodi ?

For me this works (if Kodi is started when TV is off - output does not work. If I turn on Kodi if TV is on -> everything is ok)

grahamh · 14 February 2021 12:18

It shouldn’t affect things, but the EDID is sending conflicting information about deep colour capability. (Pis don’t use deep colour AFAIK).

Try putting this file in /boot and renaming it to edid.dat
https://collab.osmc.tv/s/B0rYnFymXfRIEJd

Take out all the lines in your config.txt that start with hdmi or sdtv and put just hdmi_edid_file=1 instead.

Reboot and cross fingers.

daviddoji · 14 February 2021 12:38

Yes, that’s what I always do after seen the same issue in other comments.
Anyway, thanks for the suggestion

daviddoji · 14 February 2021 14:13

Hi @grahamh. I’ve renamed it to “edid.dat” and placed it under /boot:

The config.txt looks like this now:

gpu_mem_1024=256
#hdmi_ignore_cec_init=1
disable_overscan=1
start_x=1
disable_splash=1
gpu_mem_256=112
gpu_mem_512=144
#sdtv_aspect=1
hdmi_edid_file=1

But still, after rebooting, black screen

grahamh · 14 February 2021 14:14

what does tvservice -m CEA say now?

daviddoji · 14 February 2021 14:18

Ummm, something is wrong. I can’t reach it via ssh.
I’m reflashing the image now.

grahamh · 14 February 2021 14:27

Just checking: you’re getting nothing at all on the screen? Not even the blue OSMC splash screen and not even any console messages?

daviddoji · 14 February 2021 14:29

Nothing at all. I can’t even connect via ssh.
Finishing the reflashing and trying again.

@grahamh Still black screen, but now at least I have ssh access:
osmc@osmc:~$ tvservice -m CEA
Group CEA has 16 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
(native) 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
(prefer) mode 31: 1920x1080 @ 50Hz 16:9, clock:148MHz progressive
mode 32: 1920x1080 @ 24Hz 16:9, clock:74MHz progressive

grahamh · 14 February 2021 14:38

Did you check that other devices work on that screen/HDMI input and at what resolutions/modes?

Or I guess you’re saying it works with Pi on RPiOS on that HDMI input?

daviddoji · 14 February 2021 14:42

Yes, I have another Pi, the version 2, which has RPiOs installed it works using same HDMI cable, same input.
Resolution of that RPi is 1920x1080.
The RPI v2 with RPiOS:
pi@raspberrypi:~ $ tvservice -m CEA
Group CEA has 16 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
(native) 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
(prefer) mode 31: 1920x1080 @ 50Hz 16:9, clock:148MHz progressive
mode 32: 1920x1080 @ 24Hz 16:9, clock:74MHz progressive

Even more, on this RPi, I don 't even have to wait for the TV to switch on. I switch it on at the same time as the TV and it works.

fzinken · 14 February 2021 14:45

Could it be that you have a power supply issue? Because even if the HDMI output is messed up it should be reachable by SSH within 1 minute of booting

daviddoji · 14 February 2021 14:50

Don’t know what happened. After reflashing the image, I could connect. So I guess that PSU is ok.
Anyway, thx for the suggestion.