[mythtv-users] Strange resolution problem

[Andréas Kühne]

Of course, I could be totally wrong, but it was the only thing I could
think of.

Regards,

Andréas

2015-07-04 8:57 GMT+02:00 Andréas Kühne <andreas at kuhne.se>:

> 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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>
>
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