JeremyF wrote:It could be also be a grounding issue...the HDMI connector is really the only real ground on the Pi.
Er... no? If that were the case then no pi would ever run without HDMI
There have been other grounding issues associated with the HDMI, but no the HDMI is not the only "real" ground on the pi.
tdecurtins wrote:Mine is getting about 2 amps.
Okay, so I'm going to assume that the PSU is plugged into the microUSB power port (and not just being back feed power via a USB port).
I have four follow up questions
1) Do you actually have no network when the LEDs aren't lit up? I know this seems a bit of a silly question, but I know that depending on the revision of the distro the lights can representing different things (though having said that, I can't remember if that applied to the network LEDs or just the SD access and power LEDs) so it's possible you still have network connectivity without the lights
2) Which version of the Pi do you have (512 or 256) and which revision is it?
3) Which distro are you using and when was the last time you updated it?
4) do you loose network as soon as you unplug the HDMI, or only once you reboot without the HDMI connected?