Yes, please create a config.txt to test. You can use the params from this link https://www.raspberrypi.org/documentation/configuration/config-txt/video.md
Wrt a template, I'd start with hdmi_safe=1
or hdmi_group=2 hdmi_mode=xxxxx (whatever mode you need)
Pablo.
On 12/4/20 16:52, John Frink wrote:
Should I create a /boot/config.txt file for the system? If so, is there a generic template for such a file?