Problem with booting + TV not getting signal

I have the computer hooked up to a TV via HDMI. The resolution of the booting process is set to 1280x720, and then KDM goes to the correct 1360x768.

Sometimes when I boot, the TV does not receive a signal until the boot stage reaches the KDM. I do not know how to reproduce this exactly.

Any ideas as to what it could be/diagnose/fix?

Maybe the TV has a problem switching to 1280x720.

Yeah, but then it would never work instead of working half the time. :sarcastic:

No not if the detection was flaky. I see this as a hardware problem. Check the cables make sure they are seated correctly. If you have access to other cables try them.