No 480i possible at emulationstation/Kodi PI4 400

[mitu]

Oh I am sorry.
Pi4 400

Eh, it was in the title, forgot about it - sorry.

I've tested with a pi3 and the config.txt changes work, but haven't tested with a Pi4.

For the Pi4, things may be different, since tvservice sets the firmware resolution, but the GPU drivers use the EDID information retrieved from the display for the list of supported resolutions.

What does tvservice -m CEA reports when you run it from the command line ?

[lightpixel]

@mitu

Group CEA has 5 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 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive

...seems raspi-config filters out all interlaced modes.
This is so sad, because many many people love to play there old games on there old CRT TV set´s...

[mitu]

@lightpixel said in No 480i possible at emulationstation/Kodi PI4 400:

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 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive

Seems the interlaced mode is not reported by the converter.
Add to the configuration file:

hdmi_ignore_edid=0xa5000080

and see if it makes a difference.

...seems raspi-config filters out all interlaced modes.
This is so sad, because many many people love to play there old games on there old CRT TV set´s...

raspi-config not showing that particular video mode is not an obstacle in making it work. Worse case - if config.txt setting don't work - you can set the video mode via tvservice.

[lightpixel]

@mitu
Yes it´s wired...
If I set manually tvservice -e "CEA 6" the adapter works...
I added hdmi_ignore_edid=0xa5000080 in the config.txt
now the resolution is correct set to 640x480, but progressive.
... I also added tvservice -e "CEA 6" in the config.txt, but it it´s not recognized....
I´ve done a test with a OSMC (KODI folk for raspberry) and there´s 480i working like charm... so it must be Pi4 relatetd issue in retropie

[mitu]

@lightpixel said in No 480i possible at emulationstation/Kodi PI4 400:

... I also added tvservice -e "CEA 6" in the config.txt, but it it´s not recognized....

That's a command, not a valid config.txt configuration option.
Can you post your current config.txt ? Add code blocks (```) before and after the contents.

[lightpixel]

@mitu

# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe" mode
hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=768	
#framebuffer_height=576

# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group:0=1
#hdmi_mode:0=6

tvservice -e "CEA 6"

hdmi_ignore_edid=0xa5000080

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2
#sdtv_aspect=3
#enable_tvout=1

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Uncomment this to enable infrared communication.
#dtoverlay=gpio-ir,gpio_pin=17
#dtoverlay=gpio-ir-tx,gpio_pin=18

# Additional overlays and parameters are documented /boot/overlays/README

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2

[all]
#dtoverlay=vc4-fkms-v3d
#overscan_scale=1

Oh success: I´ve put the

tvservice -e "CEA 6"
 

in the autostart.sh and now it works...

[mitu]

Your config.txt is wrong - you've commented out the hdmi_mode/hdmi_group options and set hdmi_safe , which will set a fixed resolution. Plus, the tvservice command doesn't go in config.txt.

I suggest you start with a stock config.txt and add at the end:

hdmi_force_hotplug=1
hdmi_group=1
hdmi_mode=6
hdmi_ignore_edid=0xa5000080

[dankcushions]

@lightpixel
and also
config_hdmi_boost=4
doesn't apply to pi4: https://www.raspberrypi.com/documentation/computers/configuration.html#troubleshooting-your-hdmi

[lightpixel]

@dankcushions
thanks to all but I give it up...
ES starts in 480i now correctly, but Kodi and all other emus switch to 480p when starting.
I´ve here a Pi2scart on my desk which I ´ve ordered some month ago...
Is there any chance to get I work at 480i?
I should only setup the corrcet hdmi timings for 480i... but how?

[mitu]

Is there any chance to get I work at 480i?
I should only setup the corrcet hdmi timings for 480i... but how?

Don't have a Pi2Scart set-up, so can't comment on that.

[sirhenrythe5th]

i dont know if this is still up-to-date, but after my dissapointing try to connect my Pi4 to a CRT i also wanted to buy a Pi2Scart.
At this point it was not possible to use it without issues, there were problems with the 3,5" headphone-jack, which is used by the Pi2Scart for audio-output.

[lightpixel]

@sirhenrythe5th
for me sound over the 3,5mm jack is working perfect. And at 240p everthing is working like a charm....

[sirhenrythe5th]

@lightpixel thanks a lot for info, then this issue seems to be resolved.
Do i understand it right that with this Pi2ScartDevice you also bypass this downclocking of the CPU that the Pi4/OS does when the AV-Out of the Pi4 is used?

[lightpixel]

@sirhenrythe5th can´t tell exactly, but I did nt notice any performance differences between Pi2scart and composite.