Help with composite output for LibreELEC-RPi4.aarch64-12.0-nightly-20231217-1833aee

thericeking · December 18, 2023 at 7:15 PM

I'm using Microsoft Zune 3.5mm composite cable. Used it before without issues.

Hardware: Rasberry Pi 4 4GB RAM (No overclocking)

This is what I have on cmdline.txt per instructions found in config.txt

Code

boot=UUID=1712-0016 disk=UUID=394a24c2-c88a-4566-8f31-e98cf8d0886a quiet console=tty0 video=Composite-1:720x480@60ie

This is what I have in config.txt

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 version v1 (do not remove or change this line!)
################################################################################
# For more options and information see
# http://rpf.io/configtxt
################################################################################

# Default GPU memory split, 76MB are needed for H264 decoder
gpu_mem=76

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

[all]
################################################################################
# Use distroconfig-composite.txt instead of distroconfig.txt to enable
# composite video output.
# The composite video mode needs to be configured in cmdline.txt:
# For PAL add: video=Composite-1:720x576@50ie
# For NTSC add: video=Composite-1:720x480@60ie
################################################################################
include distroconfig.txt
include distroconfig-composite.txt

# uncomment to enable analog audio output
dtparam=audio=on
audio_pwm_mode=1

sdtv_mode=0

disable_overscan=0

overscan_left=16
overscan_right=16
overscan_top=16
overscan_bottom=16

# uncomment to enable infrared remote receiver connected to GPIO 18
#dtoverlay=gpio-ir,gpio_pin=18

Display More

Any help will greatly be appreciated.

**HiassofT** · December 18, 2023 at 10:21 PM

Remove the "include distroconfig.txt" line from config.txt.

You can also remove sdtv_mode and overscan settings, they have no effect.

so long,

Hias

thericeking · December 20, 2023 at 6:45 PM

I tried again with a clean install using LibreELEC-RPi4.aarch64-12.0-nightly-20231219-865d980.img on a Pi 4 4GB

cmdline.txt

Code

boot=UUID=1912-5351 disk=UUID=ef14f8a9-525e-48ce-b4a6-375d0654f3ce quiet console=tty0 video=Composite-1:720x480@60ie

distroconfig.txt

C

# 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 version v1 (do not remove or change this line!)
################################################################################
# For more options and information see
# http://rpf.io/configtxt
################################################################################

# Default GPU memory split, 76MB are needed for H264 decoder
gpu_mem=76

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

[all]
################################################################################
# Use distroconfig-composite.txt instead of distroconfig.txt to enable
# composite video output.
# The composite video mode needs to be configured in cmdline.txt:
# For PAL add: video=Composite-1:720x576@50ie
# For NTSC add: video=Composite-1:720x480@60ie
################################################################################
#include distroconfig.txt
include distroconfig-composite.txt

# uncomment to enable analog audio output
dtparam=audio=on
audio_pwm_mode=1

# uncomment to enable infrared remote receiver connected to GPIO 18
#dtoverlay=gpio-ir,gpio_pin=18

Display More

I had no luck.

**Da Flex** · December 20, 2023 at 6:55 PM

Code

# uncomment to enable analog audio output
dtparam=audio=on
audio_pwm_mode=1

Not sure if you really need this, because "composite video" already has audio included.

thericeking · December 20, 2023 at 7:14 PM

Quote from Da Flex
Code
# uncomment to enable analog audio output
dtparam=audio=on
audio_pwm_mode=1
Not sure if you really need this, because "composite video" already has audio included. I'm I missing something?

But it says to uncomment to enable analog audio out.

**Da Flex** · December 20, 2023 at 7:23 PM

Read the specs for "composite video". The "analog audio" part is for users, who want digital video, but analog audio.

**HiassofT** · December 20, 2023 at 10:42 PM

The analog audio stuff in config.txt is fine - you need that to get analog audio regardless of using composite or HDMI video.

Not sure what the issue could be, please post a pastekodi log - run "pastekodi" via ssh and post the URL you got or use the "upload log files" function in LE settings and post the URL

so long,

Hias

**Da Flex** · December 21, 2023 at 1:43 AM

OK, then your config is fine, and I've learned something.

Please try LE 10.0.1 with that config. There was a composite bug in newer LE versions.

**HiassofT** · December 21, 2023 at 1:36 PM

I found time for a quick test and could reproduce the issue here. It seems composite video out got broken when switching to kernel 6.6 - with kernel 6.1 it's fine.

I'll have a closer look after Christmas, for now best stick to builds from before 20231122.

so long,

Hias

thericeking · December 21, 2023 at 8:20 PM

HiassofT Thank you for looking into this.

Da Flex I tested just to confirm and I had to uncomment dtparam=audio=on and audio_pwm_mode=1 in order for composite to work on Stable version LibreELEC-RPi4.arm-11.0.3.img.gz for Pi4

**HiassofT** · December 30, 2023 at 1:57 PM

Found time for a quick test, it also doesn't work in RPiOS so likely it's an issue in the RPi 6.6 kernel. I've opened an issue here: https://github.com/raspberrypi/linux/issues/5814

so long,

Hias

**HiassofT** · February 4, 2024 at 12:41 PM

Composite video has been fixed in the RPi kernel and the latest LE12 nightly should work fine.

Can you please give it a try?

so long,

Hias

Help with composite output for LibreELEC-RPi4.aarch64-12.0-nightly-20231217-1833aee

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