Raspberry Pi 4 CRT support

[barvhog]

I am trying to setup a raspberry pi 4 for use with a crt and have tried the other “fixes” on the other posts, and nothing is working. I have managed to get display out with raspbian so its not just my pi, and have gotten to the point where the osmc splash shows, but then it get to a black screen with no display out immediately after. I will post a log after i extract for more info in a bit. could i get some help with this?

[darwindesign]

Did you happen across this thread yet?..

[HowTo] Composite output in Raspberry Pi!

HowTo Raspberry Pi Help and Support I’ve just discovered how to solve the very annoying issue regarding the black screen after the boot splash screen! I spent 3 days trying to solve this, trying almost every single suggestion in the OSMC and LibreELEC forums and that’s how I was able to do it: Download the latest release of OSMC on your PC The 2023.12-1 release does not work with this method! You only need to do this step if you only have a composite TV to work with. If you have an HD…

[barvhog]

Unfortunately this did nothing for me, I tried this multiple times, and with some other fixes, but nothing was working.

[barvhog]

Here are the logs, and after splash it just goes to no display out at all. so not black screen, but no output at all. https://paste.osmc.tv/jirazecehi

[darwindesign]

====================== Pi config-user =================== 7kfykHPJ
display_auto_detect=1
dtoverlay=vc4-kms-v3d
dtoverlay=audio=on
dtparam=audio=on
enable_tvout=1
sdtv_mode=0

---------------------- Pi config-user END --------------- 7kfykHPJ

Try switching your config-user.txt file to the following…

# Disable HDMI auto-detection
display_auto_detect=0
# Legacy driver for composite video
dtoverlay=vc4-fkms-v3d
# Enable 3.5mm video output
enable_tvout=1
# Enable 3.5mm audio channels
dtparam=audio=on
# Set video standard to NTSC
sdtv_mode=0
# Ignore HDMI connections
hdmi_ignore_hotplug=1

====================== cmdline =================== 0wwYYuO5
coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 smsc95xx.macaddr=2C:CF:67:59:5D:5A vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait quiet osmcdev=rbp4 video=Composite-1:640:480@60

---------------------- cmdline END --------------- 0wwYYuO5

I believe you need to tweak these three settings…

video=Composite-1:720x480M@60ie
snd_bcm2835.enable_hdmi=0
snd_bcm2835.enable_compat_alsa=1

[barvhog]

This actually worked, thank you.

[darwindesign]

That’s good to hear. I’d suggest you make a post in that howto thread on what changes you needed that differed from the first post for others that may happen to want to do this same thing. I assume that updates to OSMC since that thread was originally started necessitated some tweaks.