[mythtv-users] HDMI - no signal

[PJR]

On 07/01/14 00:00, Mick Sulley wrote:
> I have set up my myth box, latest Mythbuntu, and got it working with a
> small TV in the study, now time to move it to the lounge.  I plug it
> all in via HDMI and the TV displays 'No Signal'.  I plug my laptop in
> via that same HDMI lead and it works.
>
> TV and HDMI lead are OK as they work with my laptop.
>
> Myth box is OK as it works with the small TV in the study.
>
> Why does the Myth box not work with the big TV?
>
> The Myth box is using on board graphics on a Gigabyte SKT-1156
> Q57M-S2H Motherboard
> The TV is a Samsung PS42E7HX/XEC
>
> Thanks
> Mick
>
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I suggest taking a look at /var/log/Xorg0.log for when both TVs are
connected, this may give some suggestion as to the problem.  You may of
course have already done this, if so why not include it in your next
posting.  I would add that my Samsung HDMI TV has to be specifically
configured to use one of its HDMI inputs; I have used it only with
Nvidia graphics cards.