[mythtv-users] Strange resolution problem

[Andréas Kühne]

What I would do is check the EDID properties of the projector, also perhaps
change the settings in mythbuntu to not care about the EDID values. I don't
know how to do that however.

I think that your projector (or your graphics card) could be sending
incorrect information to mythbuntu about the resolution present on the
projector, and therefore changes the resolution during a scene change. If
you could just fix the resolution to 1920x1080 without taking into account
the EDID properties, you could be fine.

Regards,

Andréas

2015-07-04 0:46 GMT+02:00 Damian <myth at surr.co.uk>:

> Hello all,
>
> I'm having a very annoying problem with my projector, and am trying to get
> to the bottom of if it's a projector fault or something wrong with the
> settings of my frontend system.
>
> I've got an ESC Liva frontend attached to a BenQ W1300 projector.
>
> The projector has just come back from being repaired for a different
> fault. In the mean time, I also reinstalled MythTV from scratch on the Liva
> computer. So, both components are effectively 'new'.
>
> The issue I'm having is that whenever I watch anything at full resolution
> (1920×1080), the projector keeps going blank, 'searching' and then picking
> up the signal again, but this time at 1919x1080. Then after a few seconds
> or minutes, it will go blank again, and this time go back to 1920x1080.
>
> It seems to happen on or after scene cuts.
>
> I've even seen it just in Mythbuntu itself (outside of MythTV), when
> something like Firefox gets opened or closed.
>
> I assumed that this must be a Mythbuntu setup issue. I assumed that the
> sent signal must be somehow fluctuating between 1920x1080 and 1919x1080 for
> some reason. However, I have installed the mythbuntu frontend from scratch
> twice since seeing this problem, and it's not going away!
>
> Is there any way of knowing if it's a Mythbuntu setup issue, or another
> problem with the projector?
>
> One of the things that made me think that it could be the OS is that after
> I set it all up, when I go to the 'display' section to check the
> resolution, it says 1919x1080 the first time. However, I then click the
> drop-down and select 1920x1080, and it's remained saying that ever since.
>
> The projector is having to be returned yet again due to dust behind the
> lens. I need to find out quickly if this is a Mythbutu issue or a problem
> with the projector. I don't want to falsely accuse BenQ of another problem
> as that will undermine the legitimate issues I have had with the projector.
>
> I don't have any other HD devices that I can plug into the machine to test.
>
> Any ideas?
>
> Thanks,
> Damian
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