Hardware: RV250LF (M9), Hisense LCD2233EU -> HEC LCD2233EU?
If I connect my external monitor (TV) to my laptop (via VGA-VGA cable) and start my system the external monitor loses the signal after loading drm modules/drivers/firmware until X starts.
So I see console (init 3) only on laptop's internal monitor.
With X/KDE the external monitor works then fine.
dmesg, Xorg.0.log and xorg.conf follow...
Created attachment 30933 [details]
Created attachment 30934 [details]
Created attachment 30935 [details]
Fixed a long time ago.