I purchased a HDMI/VGA adapter, and I'm not able to get it to work.
I've tried with various monitors, and various VGA cables, and various config.txt settings.
In particular, I've tried:
hdmi_safe=1
and
hdmi_force_hotplug=1
and
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=16 # and 17 & 18
Each time I change the config.txt and reboot, the monitor wakes up, but never displays anything. (Unless connected via DVI).
What should I try? If you can get this working for me consistently (on various monitors) I'll likely order another 8 or so.

