I downloaded LE9.2.6 for Raspberry Pi 4B using LibreELEC.USB-SD.Creator.Win32. When I start the RPi, I see the RPi startup screen (color palette), but the LibreELEC startup screen never appears. I have only the HDMI cable, Ethernet cable, and power connected to the RPi. (There is no difference when I connect a mouse and a keyboard.) The RPi is aware of the Samsung TV connected to the other end of the HDMI cable, because the TV is not complaining about "No Signal".
Installing RaspOS (using an image on a different SD card) works as expected. While running RaspOS, I updated the EEPROM on the RPi 4B to the latest version.
I found a recent posting on this forum, with title "No vidéo Signal" , which talks about mismatch related to EDID, but his person was able to get LibreELEC to work enough to capture logs.
I have tried to use a computer monitor, but the only ones that I have support only VGA and Display Port. With a Display Port / HDMI adapter connected to the HDMI cable from the RPi, I do not even see the RPi startup screen.
It seems to me that a basic property of an OS is to find the display(s) in its environment and display on it/them. So, I am very puzzled by the inability of LibreELEC to display anything on my screen. My RPi 1B is getting a bit long in the tooth, and I was very much looking forward to using my new RPi 4B. BTW, the RPi 1B, with the same level of LiberELEC (9.2.6), has no difficulty displaying on this TV.
Can anyone give me any hints as to how to resolve this problem?