I have a fresh 9.2.1 installation on a RPi 3 Model B, with an HDMI connection to a Dell U2414H.
When booting, all goes well (splash screen and all) but as soon as Kodi is started the screen goes black will remain so until the HDMI cable is physically disconnected and reconnected. While it's black, HDMI signal seems OK but the image is black and blank.
Tried everything I could - config.txt tweaks, hard coded resolution in Kodi, tvservice manipulations, etc. It seems like nothing I do makes any difference and the ONLY way to get the display back once black is to physically reconnect.
Any ideas on how to solve, things to check?