Mac mini and projector don't detect each other

[rsegovia]

I have a new mac mini os 10.6, and I've been using it with an optoma pk301 projector as a monitor. I've had trouble with the projector not detecting the computer before, but have been able to resolve it by turning on and off one or both, and unplugging/plugging in the cable. I'm using an HDMI to mini-HDMI cable. Right now, neither of them seem to be able to detect each other, and I don't know why or how to fix it. I think it started when I put the computer to sleep last night. I thought that might create less problems than letting it fall asleep by just leaving it alone as I usually do, but it seems to have worsened the situation. I've tried everything I can think of. "Detect displays" doesn't work.

Any suggestions? Is there some way to view more information about the displays on the mac, get it to remember my previous minitors, or tell it directly to watch the hdmi port? The projector has a manual detection cycle which takes a few seconds as it checks all the ports, I wish there was a way to just tell it which port to use.

 

[rsegovia]

Seemingly solved

Well, since I set the display resolution to "720p (Television)" I haven't had any problems. Yay! Don't know why this is, but maybe this info will help someone else with the same problem

 

[PiroPhosphoric]

Me too

I also have an issue with resolution and detection of display.

My new 2010 MacMini Server is attached through HDMI to a Rotel AV Amp + Pioneer Kuro plasma display, and directly through mini-display port-hdmi adapter to the Kuro. I also use to monitor the activity of the server with Screen Share in my MacBookPro. Everything goes right if I change resolution to 720p, but not at 1080p.

I don't know why, the Rotel and the Kuro decide at random not to detect the MacMini. It seems to be a problem with resolution, that solves if I restart the macmini, but last time, for example, the screen didn't fit to the display and I was missing more than 15% at the top and bottom (coudn't see the Dock, for example).

There is something in the mini that tend to shut down the HDMI if you are not displaying actively, I wonder.