HDMI to Samsung 4k TV Issue

Seefate

Pi Model or other hardware: Pi 4 model B
Power Supply used: Generic 5v 3amp plug
RetroPie Version Used - 4.6
Built From: Pre made SD Image on RetroPie website
USB Devices connected: Keyboard and Controller

Hi Folks,

So I am having an issue with connection my Pi4 to my Samsung TV. The TV is a Samsung QN55Q6DTAFXZA. On the Pi I have connected the Micro HDMI port 0 (closest to the USB C) to the TV however I am unable to get it to display on the TV. When I check the log on the TV it says "CEC Command, Source enabled" but I still get no video. I have confirmed both the port on the Pi and the cable are good by plugging it into an HP monitor that I have. I was able able to get video working to the TV via HDMI port 1 however it was running at a fairly low resolution with a bit of lag and no audio (which is expected on the second HDMI port as I understand it).

I've played with the setting in the config.txt to no avail (safe mode, hdmi boost set to 7, hotplug 1) . At this point I have reverted back to the default setting in config.txt and decided to see if folks on here have any idea.

mitu

Try adding this to config.txt when using the first HDMI port:

hdmi_ignore_cec=1
hdmi_group=1
hdmi_mode=16

Red_Trev

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

Disable safe mode and try tweaking these values, it will be trail and error till you find the right combo:

hdmi_force_hotplug=1 ..... HDMI output mode will be used, even if no monitor is detected
hdmi_ignore_edid=0xa5000080 ...... enables the ignoring of EDID/display data
config_hdmi_boost=7 ...... signal strength of the HDMI interface, possible values are 0 to 11
hdmi_group=2 ..... '2' is DMT
hdmi_mode=16 ....... '16' is 1024x768___60Hz___4:3
disable_overscan=0 ...... use default value of overscans
overscan_left=0 ...... the number of pixels to add left / right / etc ...
overscan_right=0
overscan_top=0
overscan_bottom=0

Seefate

@mitu Thanks, that appears to have worked! Now the fun of getting SM64 to run smoothly.

Thanks!