Posts by dcea

dcea · Force hdmi doesn't work dcea August 30, 2020 at 7:21 PM

That did the trick! Thank you very much. I saw that option in the raspberrypi.org documentation but did not think that this could be relevant for me.

dcea · Force hdmi doesn't work dcea August 30, 2020 at 10:28 AM

I installed libreelec on my RPI4 2GB and I just can't get hdmi_force_hotplug=1 to work. The raspberry is connected to an AVR. Original power supply and hdmi connecter are used.

My config.txt looks as follows:

Code

# 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

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

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

# HDMI without active display (optional)
hdmi_force_hotplug=1
# Audio over HDMI (optional)
hdmi_drive=2
# CEA mode
hdmi_group=1
# 1080p 60 Hz
hdmi_mode=16

Display More

That way, the screen says "no signal" when the RPI is on before the AVR. hdmi_group=2 with hdmi_mode=76 also results in the same behaviour. When deleting hdmi_mode=xx it works, but the resolution is set to 1024 x 768.

Without any hdmi_group entry the raspberry boots (while AVR on) with 1080p 60 Hz. So this should be the right resolution.

I can't find a solution and I do not know any more.