if monitor doesnt send DDC/EDID to GPU driver, then installing monitor driver should fix it
https://support.lenovo.com/us/en/downloads/ds001735-lenovo-l2250p-22-in-wide-monitor-files
even if it shows its for up to windows 7, i just tested it on win11 and it installed just fine, inf file is up to date and certificate is still valid (for win10/11)
View: https://imgur.com/5FERUva
you do need to download all three files cat, icm and inf
then either add driver through device manager or right click inf file and choose install
once installed, go to device manager, locate your monitor and either confirm that it shows "Lenovo L2250pwD(Analog/Digital)" label, if not, then right click that generic monitor and update driver
that is "browse computer for drivers" option
View: https://imgur.com/FLFc3af
and then "let me pick from a list" option
View: https://imgur.com/VYQdaZL
if lenovo driver wont show up now, uncheck "show compatible hardware"
View: https://imgur.com/5rSUXp5
list of selectable monitor drivers will show up, on left side find lenovo, on right side pick either analog or digital (doesnt really matter, its just label)
View: https://imgur.com/y7Eijnz
then finish installing it and thats about it, 1920x1080 wont be available now
1680x1050 @ 75Hz should be available now