[mythtv-users] Migrating from VGA to HDMI
Rich.West at wesmo.com
Tue Apr 24 05:05:03 UTC 2007
Phill Edwards wrote:
> I bought a 50" Panasonic TH-50PX600A plasma TV a few months ago and
> have had it connected via VGA. The picture has been good but I
> couldn't get X to fill the screen - it leaves quite a large blank
> border on the right and bottom sides, and sometimes these blank areas
> fill with "snow" which doesn't look good and I fear may cause burn-in
> on the plasma screen.
> So I recently bought a cable to connect my nVidia card's DVI-D output
> to the HDMI input on my TV. Initially the picture seemed what I can
> only describe as "lairy" - over-vibrant, over-colourful and just
> didn't look as good as with VGA. But it does fill the screen and I
> found that the difference was due to different colour settings on the
> TV for different inputs - doh! So if anyone else has this model TV I
> can recommend HDMI over VGA.
> I have some questions, though...
> 1) The manual says these inputs are acceptable on HDMI:
> 480i (60Hz)
> 480p (60Hz)
> 576i (50Hz)
> 576p (50Hz)
> 720p (60Hz)
> 720p (50Hz)
> 1080i (60Hz)
> 1080i (50Hz)
> What do people recommend I use as TVStandard in xorg.conf? I used to
> use PAL-B. Will picture quality be better if I use something like
> HD1080i or HD720p? I thought (possibly naively!) that if my resolution
> is 1280x720 then using 720p would somehow be a good "match" - is there
> any sense in that or not? To be honest, I haven't found a lot of
> difference no matter which TVStandard setting I use.
> 2) Since using DVI --> HDMI I have found that console windows (when
> you press Shift-Alt-F1) are too big for the screen so that the top,
> bottom and sides seem to be cut off from view. This is a bit of a pain
> as I use the console quite a lot for fiddling around with stuff. Is
> there anything I can do to correct this?
I have essentially the same set as yours. And, yes, you need to adjust
the color settings on the tv. :)
Personally, I just use the Mode "1280x720_60", which is a built-in
nvidia modeline for 720p. The graphics card then pushes out 720p, and
the tv knows what to do with it.
From my xorg.conf:
HorizSync 30.0 - 70.0
VertRefresh 59.0 - 85.0
BoardName "XFX nVidia GeForce 6200"
Option "RenderAccel" "1"
Option "NvAGP" "2"
Option "NoLogo" "true"
Option "UseEvents" "True"
Viewport 0 0
Modes "1920x1080_60" " "1280x720_60" "720x480_60"
# 1080p 720p 480p
Option "NoWidthAlignmentCheck" "True"
As far as the console being a little too big, unfortunately that is an
aspect of the built-in overscan that comes with displaying in the "tv"
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