I’m having issues getting any Raspberry Pi Zero to display on a VGA screen. I’m using a HDMI to VGA adaptor (the standard black non-powered one). The Pi0 works with any HDMI screen I test it on. The VGA screen and adaptor works with any other device I connect to it, including other Raspberry Pi 3 but not with the Pi0. Is it just not compatible or is there something I’m not doing right?
Most of the non-powered adapters actually require some through the HDMI cable itself. I would say that this particular adapter isn’t able to draw enough to get the converter chip running.
Looking at the schematics of the Pi 3B+ and the Zero W should shed some light.
It might just be the Pi is defaulting to a mode your screen isn’t compatible with. If you can, test it with other monitors to confirm it’s not specific to that one screen.
You can also try activating safe mode by uncommenting
hdmi_safe=1 in /boot/config.txt