Just bought a ASRock Deskmini A300. It's a cute, very mini, but somewhat expandable PC, (unlike a NUC or other ultra tiny PCs). At present, I have the following;
Ryzen 5 2400G
1 x 4GB SO-DIMM
1 x 120GB NVME drive
DisplayPort to ViewSonic 24" 1080p monitor, (it has DisplayPort in, so no adapters required)
Anyway, had some irregular issues with video not starting at boot. Since it's Ethernet connected, I was able to login and verify it was up. A reboot seemed to fix the problem. Annoying.
It appears that if my monitor is powered off during boot, sometimes the video is disabled. But not always, as a test just now proved. My old desktop and laptop do not behave that way, so I was caught off guard.
So, anyone else have a similar issue?
As a test, I am getting a fit-headless, (using the HDMI port, as the DeskMini A300 has one of those too). It will fake a monitor in case I forget to power on my monitor. It appears some APUs, (including Mac Minis), will disable the graphics if there is no monitor plugged in at power on.