[mythtv-users] Adventures in HDTV - Notes from the trenches

Steve Adeff adeffs at gmail.com
Sun Dec 18 23:52:05 EST 2005

On Sunday 18 December 2005 23:17, Matt Mossholder wrote:
> 1) Try and ensure that the TV you intend to purchase does not -require-
> HDCP enabled input sources for HDMI or DVI connections before you make a
> purchase.  This has a number of bad side effects, listed below.

or get a 6000 or 7000 series card as you mention below.

> 2) A display capable of 720p is preferable to one capable of 1080i,
> under many circumstances. 720p has less flicker, and presents less
> problems from a display driver standpoint. One that supports both (or
> 1080p) is even better.

no HDTV currently accepts 1080p input. 
1080i should be fine, I can't imagine any noticable flicker in a proper set up 
on a good 1080i tv. Hell, even my cheap Sanyo displays 1080i with no 
noticable flicker.
If your TV is not actually a native 1080i tv though, then there might be some 
issue with 1080i input.

>     *) If you require interlaced display modes, choose version 6629, if
> you are using progressive, you can go with the latest version.

Interesting. So interlace does work on the older drivers! I wonder what the 
downside to running 6629 over 7676 is. Time to get a GeForce card with a GPU 
that supports interlaced output....

>     *) if you are using an AudioAuthority 9A60 VGA-> Component adapter,
> be aware that somewhere above version 6629 the nVIDIA drivers began
> experiencing an issue when using 1080i mode, where the display would be
> shifted such that the left and right edges are in the middle of the
> screen.

If your using an NVidia card to output to a 1080i tv you should be using the 
DVI connector, if not, just get one with built in component hdtv output and 
sell the AudioAuthority box.

>     *) There is an outstanding bug in versions higher than 6629 when
> utilizing a DVI connection which prevents the use of xv VBlank syncing.
> I've seen it mentioned that this is just with interlaced modes, but in
> my experience, it seems to crash right away whenever the DVI port is
> being used.

I don't understand this issue? I'm using 7676 with DVI output and it doesn't 


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