[mythtv-users] Weird HDMI problem

[Mike Perkins]

On 05/04/12 09:48, phipps-hutton at sky.com wrote:
>
> Quoting Igor Cicimov <icicimov at gmail.com>:
>> The former LG TV must had been doing some HDMI wake up or something when
>> switching from TV to HDMI input. Or kept all outputs under power/active in
>> all times where is with today's power saving TV's this is not the case. I
>> guess it's just a bad combination of ATI driver and TV, the driver fails
>> waking up the HDMI and the TV not helping about this at all.
>
> It's a defective TV and it's not power saving that is causing it. The EDID
> circuitry should be powered by the device connecting to the TV so that it works
> when the TV is off. There are power wires in VGA, DVI and HDMI specifically for
> this. The circuitry is very simple, basically just a tiny EPROM. I would guess
> that the TV manufacturer has decided to cut costs by only having one and
> connecting it up to the active input rather than have one per input or doing
> something smarter. FYI my Sony Bravia does the right thing on HDMI and VGA inputs.
>
...which might imply that one solution could be to try with your mythtv 
connected to each HDMI input in turn. I have a Hitachi TV with two HDMI inputs 
and they are definitely different in operation depending on what's connected 
where. In my case, HDMI2 is the only one with an "exact-PC" scale option.

-- 

Mike Perkins