[mythtv-users] NVidia/overscan problem

[Jay Ashworth]

This will help primarily because unlike people who only supply individual
lines, your file will show me *which stanzas those lines go in* (a note
to everyone else who ever does that :-)... and that's the hard part.

Thanks.

I'm beginning to infer it's not possible to drive that thing at native
1366x768 over HDMI, is that true?

Cheers,
-- jra

----- Original Message -----
> From: mythtv at hambone.e4ward.com
> To: "Discussion about MythTV" <mythtv-users at mythtv.org>
> Sent: Tuesday, September 24, 2013 4:46:06 PM
> Subject: Re: [mythtv-users] NVidia/overscan problem
> I hesitated to post my xorg.conf on the list because it won't apply to
> most
> folks, and people seem to think they can use random modelines to solve
> their problems with X. Maybe it will help you, though. Also, it might
> not
> be perfect, but it works for me. Here it is:
> 
> # RPM Fusion - nvidia-xorg.conf
> #
> Section "Monitor"
> Identifier "SamsungHDTVRainbow"
> Option "ExactModeTimingsDVI" "TRUE"
> HorizSync 31-50
> VertRefresh 56-75
> 
> #modeline "1400x1050" 122.00 1400 1488 1640 1880 1050 1052 1064 1082
> +hsync
> +vsync #not working
> #KEY FF H1 H2 H3 H4 V1 V2 V3 V4
> FLAGS
> #orig modeline "1920x1080" 74.25 1920 2008 2052 2200 1080 1084 1094
> 1124
> +hsync +vsync Interlace
> modeline "1920x1080" 74.25 1920 2008 2052 2200 1080 1084 1094 1124
> +hsync +vsync Interlace
> modeline "1280x720" 74.25 1280 1390 1430 1650 720 725 730 750
> +hsync +vsync
> EndSection
> 
> Section "Screen"
> Identifier "DefaultScreen"
> Monitor "SamsungHDTVRainbow"
> Device "Videocard0"
> 
> SubSection "Display"
> Depth 24
> # Modes "1920x1080"
> Modes "1280x720"
> EndSubSection
> 
> Option "metamodes" "DFP-0: 1280x720 { ViewPortIn=1280x720,
> ViewPortOut=1045x675+120+15 }"
> EndSection
> 
> Section "Device"
> Identifier "Videocard0"
> Driver "nvidia"
> Option "UseEDID" "False"
> EndSection
> 
> #below prevents tearing/stuttering
> Section "Extensions"
> Option "Composite" "Disable"
> EndSection
> 
> Like Patrick said, you need to use "UseEDID" "False" like I've done
> above. I also have "ExactModeTimingsDVI" "TRUE" in the Monitor
> section.
> You might have different options but this works for me in Fedora.
> Otherwise, the modelines won't stick. It's in that Ubuntu forum link,
> I
> think.
> 
> You might not need a modeline at all if you just specify a valid
> resolution
> in the Screen section. I had to in my case, but maybe you'd be fine
> without a modeline. If so, you won't need "UseEDID" "False" and
> "ExactModeTimingsDVI" "TRUE"
> 
> To give some background on my configuration, I have a DVI cable from
> my
> video card together with optical audio out from my motherboard going
> into a
> powered adapter that sends out HDMI to my television. I did what I had
> to
> do, and it actually works okay for now. The adapter was pretty
> reasonable
> at Tiger Direct, if you need something like that. I wish I had other
> options but the television is limited.
> 
> Do the nVidia settings part second. Get your desired resolution for X
> first, and then do the overscan. The overscan stuff just means
> subtracting
> 100 pixels at a time until you get the hang of what's going on. It's a
> pain but you'll get it. You just have to keep restarting X after
> making a
> change. In my system, I do "init 3" to drop to a networking level
> without
> X, then "init 5" brings back X. I'm sure it's a little different in
> SUSE.
> CTRL-ALT-BACKSPACE is a rather rude way to restart the X server. It's
> not
> always enabled, though. Or reboot, but that takes longer :)
> 
> The +120 means 120 pixels in from the left side, I believe, and the
> +15 is
> 15 pixels down from the top. You can make these values negative if
> that's
> what your tv wants. In my configuration, 1045x675 is the real
> resolution,
> and the 1280x720 is stretched over it, if that makes any sense. I
> guess
> these numbers are all approximations. There are more details about
> these
> settings on that nVidia link on the wiki.
> 
> I hope some of that helps.
> 
> Jerry
> 
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-- 
Jay R. Ashworth                  Baylink                       jra at baylink.com
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