RPi 4 and no video out

iamapie · October 9, 2019 at 12:12 PM

Hi, I just got my new RPi 4 and the video works fine (sans some green dots, I was blaming the cheap hdmi cable) on a new tv but on my older tv I get no video at all.

This is my config.txt and distroconfig.txt currently.

Code

# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2009-2014 Stephan Raue ([email protected])
# 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

#config_hdmi_b**st=7

#hdmi_drive=2

#hdmi_group=2

#hdmi_mode=39

################################################################################
# End of default configuration
################################################################################

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

Display More

Code

# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2019-present Team LibreELEC (https://libreelec.tv)

# WARNING: DO NOT EDIT THIS FILE - IT WILL BE OVERWRITTEN WHEN UPGRADING!
#dtoverlay=vc4-fkms-v3d
disable_overscan=1

What's commented out in the config.txt I have tried in the past to no avail. I'm using the hdmi port closest to the usbc port.
Potentially unrelated but I did a restore of a kodi backup from a raspberry pi 3.

**Klojum** · October 9, 2019 at 5:59 PM Official Post

Quote from iamapie

but on my older tv I get no video at all.

That's not much information to work with, is it?

More info, please. TV specs, brand etc...

iamapie · October 9, 2019 at 6:07 PM

Sorry, it's a Sony Bravia KDL-32BX330. It's a 720p 32 inch tv.

EDIT: I'm not sure what else to provide. RP3 plugs and plays just fine btw.

**Klojum** · October 10, 2019 at 8:51 PM Official Post

Please provide a full debug log.

How to post a log (wiki)

1. Enable debugging in Settings>System Settings>Logging
2. Restart Kodi
3. Replicate the problem
4. Generate a log URL (do not post/upload logs to the forum)

use "Settings > LibreELEC > System > Paste system logs" or run "pastekodi" over SSH, then post the URL link

iamapie · October 10, 2019 at 10:47 PM

I can't seem to get any video out on any tv or monitor now. I'm thinking it might be a bad micro HDMI to HDMI cable, I'll try to replace it and update them. Until then I can't enable logging via ssh?

patrik · October 11, 2019 at 9:41 PM

I have an similar problem.

After about 2 weeks of running an RB 4 with libeelec 9.1.501 suddenly without an update or another change, the CEC doesn't work.

After a few tries to fix that and some reboots, I didn't get an Video Signal.

An RB 3 with the same HDMI-cable works fine, the mirco HDMI to HDMI adapter change had no effect.

An new install of Kodi change nothing.

I can reach the RB4 via SSH.

Kodi.log

**Klojum** · October 12, 2019 at 2:15 AM Official Post

If it happens that suddenly, then perhaps we shouldn't rule hardware failure... I hope I'm wrong.

iamapie · October 14, 2019 at 11:54 PM

Sorry to hear patrik.
I bought an adaptor instead and everything is working fine! (maybe running a bit hot even in the flirc case)

Be wary of cheap micro hdmi to hdmi cables on amazon.

patrik · November 7, 2019 at 3:08 PM

Quote from Klojum

If it happens that suddenly, then perhaps we shouldn't rule hardware failure... I hope I'm wrong.

So I got an new RB 4. Same problem.

But now I tested the output on 3 different devices.

On LG OLED, the original place of the RB 4 and were that worked 2 weeks, still no signal.

At my BenQ Pc monitor, signal.

At my old Samsung also signal.

I was using diffent cables, same cabels, diffent and same adapters.

The LG shows that "HDMI x is ready" but I didn't get an signal.

LG tells me, if other devices works, thats not their failure.

And idea from you?

Thanks

maxi · November 7, 2019 at 3:39 PM

And the power supply is the original?

Power supply is very important when it comes to hardware failures.

hagaygo · November 7, 2019 at 5:45 PM

Quote from patrik

So I got an new RB 4. Same problem.

But now I tested the output on 3 different devices.

On LG OLED, the original place of the RB 4 and were that worked 2 weeks, still no signal.

At my BenQ Pc monitor, signal.

At my old Samsung also signal.

I was using diffent cables, same cabels, diffent and same adapters.

The LG shows that "HDMI x is ready" but I didn't get an signal.

LG tells me, if other devices works, thats not their failure.

And idea from you?

Thanks

Display More

Did you try both hdmi outputs?

Here only the one near the usb power slot outputs a video.

patrik · November 7, 2019 at 8:06 PM

Quote from maxi

And the power supply is the original?

Power supply is very important when it comes to hardware failures.

Power Supply was first an 2 Amps supply, with that ist was running the first 2 weeks and is running with that on the other display.

I tested an 12Amps supply with the same outcome.

Quote from hagaygo

Did you try both hdmi outputs?

Here only the one near the usb power slot outputs a video.

Yes, both.

But I testing different things mostly only with the HDMI 0 output near the power supply plug.

Thanks

Edit: now with an brand new HDMI-Cable it works with the LG TV ( again).

I don't get it, but it's ok.

RPi 4 and no video out

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