[mythtv-users] Debugging Pixelation w/ Ceton InfintiTV 6 PCIe

Kris Jensen kris.jensen.knj at gmail.com
Mon Sep 1 20:50:39 UTC 2014


On Mon, Sep 1, 2014 at 2:25 PM, Kevin Calvert <kevin at eleventhree.com> wrote:

> Hello,
>
> Any suggestions on figuring out what's causing pixelation on my ceton
> infinititv card? It's very intermittent but is universal--it effects all
> channels.
>
> I've had a comcast tech out a couple times and, of course, the pixelation
> has never happened when they were here but all my signal levels looks just
> fine to them. I just called again while this pixelation issue was just
> happening and they said all signals going into the house look excellent.
> While it was happening the internal ceton webpage shows, what appear to be,
> ideal SNR and signal levels (37.4dB / -3.5dBmV).
>
> I have 1 backend and only two frontends, but this problem occurs on both
> frontends when it happens, so that leads me to believe there actually isn't
> any physical cat6 (frontends are wired via cat6) or hdmi (nvidia card in
> frontend to tv) connection issue here.
>
> One strange thing that I notice in the ceton log page are frequent
> "pcrlock" messages when nothing is actually changing on my end (one tunner
> is being used and the channel isn't changing)....
>
> Jan  7 14:37:54 ocur[21]: upnp: Event(tuner[4]): PCRLock, "1"
>
> Doesn't look right to me but I'm about as beginner as you can get when it
> comes to cable signal stuff. Is this something that indicates anything?
>
> Any other recommendations to point me other directions are appreciated.
>
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>
Hiya,

I have a InfintiTV 4 tuner. I found out that if my cards temperature was
>=50C I would see macroblocking. Now I keep them below 40C and all is good.


 Hows the cards temp?



 Hope it helps.


 Kris.
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