[mythtv-users] Playback looks at screensize not at monitor or windowsize

[Karl Newman]

On Mon, Jun 15, 2015 at 7:32 AM, Hika van den Hoven <hikavdh at gmail.com>
wrote:

> Hoi Karl,
>
> Monday, June 15, 2015, 3:46:34 PM, you wrote:
>
> > On Mon, Jun 15, 2015 at 4:11 AM, Michael T. Dean <
> mtdean at thirdcontact.com>
> > wrote:
>
> >> On 06/15/2015 01:30 AM, Karl Newman wrote:
> >>
> >>> On Sun, Jun 14, 2015 at 3:12 PM, Michael T. Dean wrote:
> >>>
> >>>  What does:
> >>>>
> >>>> xdpyinfo
> >>>>
> >>>> give?
> >>>>
> >>> http://pastebin.com/fqKk3ZJ0
> >>>
> >>
> >> OK, so your X is configured at 4:3 (or close enough--1.348659:1), with a
> >> DPI of 58x44 (non-square).
> >>
> >> Therefore, I'm guessing that your HDMI->composite converter sees a 4:3
> >> signal and assumes it's outputting to a 16:9 display and pillarboxes
> the X
> >> output then sends it through to your TV (presumably with WSS?).  Your X
> is
> >> configured with 1280x720 resolution.  Any specific reason why you're
> using
> >> that and not a 4:3 square-pixel resolution (and, possibly a "4:3
> standard"
> >> resolution), like 1024x768 or 1280x960 or whatever with a square-pixel
> >> aspect (like 100x100)?  I'd be interested how things work with a 4:3
> >> logical aspect ratio (i.e. where the resolution of the output has a 4:3
> >> aspect).
> >>
> >> If switching resolution doesn't help, you may just have to "un-fix" X
> and
> >> lie to it to say you're using a 16:9 display.
> >>
> >> Mike
> >>
>
> > I solved the mystery why it was ignoring my DisplaySize in xorg.conf. I
> > forgot I had used xrandr in .xinitrc (/usr/bin/xrandr --output HDMI2
> --mode
> > 1280x720 --rate 60.0 --fbmm 560x420). I changed it to 560x420 for a true
> > 4:3. Here's the available modes from the converter:
> >   $ xrandr
> > Screen 0: minimum 8 x 8, current 1280 x 720, maximum 32767 x 32767
> > DP1 disconnected (normal left inverted right x axis y axis)
> > DP2 disconnected (normal left inverted right x axis y axis)
> > HDMI1 disconnected (normal left inverted right x axis y axis)
> > HDMI2 connected 1280x720+0+0 (normal left inverted right x axis y axis)
> > 735mm x 420mm
> >    1280x720      60.00*+  50.00    59.94
> >    1920x1080     50.00 +  60.00    59.94
> >    1920x1080i    60.00    50.00    59.94
> >    1440x576i     50.00
> >    1440x480i     60.00    59.94
> >    720x576       50.00
> >    720x480       60.00    59.94
> >    640x480       60.00    59.94
> > VGA1 disconnected (normal left inverted right x axis y axis)
> > VIRTUAL1 disconnected (normal left inverted right x axis y axis)
>
> > The 720 line resolution appears sharper than the 480 line resolutions,
> even
> > though that should be the native screen resolution.
>
> > Karl
>
> But where do the underlying modelines come from? Does the converter
> provide them? I don't know the Hsync and Vrefresh limmits, but this is
> a modeline from one of my panels, which comes the same with my CRT's.
> So I guess it's a vesa mode:
>
> Modeline "1024x768x60.0"   65.00  1024 1048 1184 1344   768  771  777  806
> -hsync -vsync #(48.4 kHz e)
>
> You can try adding it to your monitor section.
>
> Yes, the modelines come from EDID on the converter. I can try adding the
1024x768 modeline, but I'm not optimistic it will solve the problem. I
think the problem is essentially what Mike described--the converter is
expecting/assuming a 16:9 signal and thus converts it via letterbox for my
4:3 TV.

Karl
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