My RPi4B 4GB can run 1920x1080 out of the box....HP 19.5" / RPi 15.6" / Hanspree 15.6".... so guess it may be something to do with the EDID of your monitors, which can be over ridden in one of the files in the O/S.
viewtopic.php?t=392930
viewtopic.php?t=392930
Statistics: Posted by KeithMck — Wed Feb 11, 2026 9:59 am