Same happens on my Gigabyte BRIX (Ryzen R7-4800U)
Quote... at first boot, screen "Libreelec (official): 11.0.3" appears and then nothing happen any more...
QuoteInstalling 11.0.1 works, but with resolution 2160p image is only displayed in the upper left half (issue is and was present from the first time of using 11.0.1)