[mythtv-users] Help me get my tv working at 1080i!

[D]

On 3/12/07, Kevin Ould <crippler75 at gmail.com> wrote:
> Hello List,
>
> I now have my MythTV setup pretty well sorted. I have everything I need
> working and all my shows setup on a schedule. So far it is working
> beautifully, no problems to speak of in the last couple weeks, the WAF is
> way up too!! I am a happy camper, this is miles ahead of my Windows setup I
> had previous to this and to think I was using 2 commercial apps and it came
> no where close to what I have with Myth. I am so glad I decided to learn
> Linux and made the jump to Linux on both my machines(Myth and my Office
> setup). Big thanks too all the programmers, theme builders and everyone else
> involved with the project.
>
> My last remaining issue is to get my tv working at 1080i. Right now I have
> it working at 480p which is pretty decent and everything is working well but
> I know the TV is able to do 1080i as that is what I was running at with my
> Windows setup. For the life of me I just can't get it working at 1080i and I
> have tried numerous settings etc.
>
> I am running on an Nvidia-6600 PCIe card which is hooked up via DVI to a 34"
> Widescreen RCA Scenium CRT(Yes a CRT!!), Love this TV. Although I would like
> the get a projector sometime down the line as my basement is perfectly
> suited for it, but that's for another day.
>
> My first step involved booting into Windows at my desired settings which
> actually turn out to be an underscanned 1920x1080i setting, works out to be
> 1768x992i, it works at 1920x1080 but there is alot of overscan so I would
> prefer the 1768x992. Anyways, I noticed within the windows Nvidia drivers
> there was a selection for "Advanced Timing". I figured this was perfect as I
> could simply write down the timings and somehow extract a ModeLine. Here is
> what I have from the Windows driver at my desired res:
>
> Horizontal:
>
> Front Porch = 88
> Sync Width = 48
> Back Porch = 296
> Sync Polarity = +
> Back End Active = 1920
> Front End Active = 1768
> Scan Rate = 33.75kHz
>
> Vertical:
>
> Front Porch = 4
>  Sync Width = 10
> Back Porch = 118
> Sync Polarity = +
> Back End Active = 540
> Front End Ative = 992
> Refresh Rate = 30.026Hz
>
> Which I interpreted as Modeline "1768x992-HD" 74.250 1920 2008 2056 2352
> 1080 1084 1094 1212 interlace +vsync +hsync
>
> Just for Comparison here is the settings for true 1920x1080
>
> Horizontal:
>
>  Front Porch = 88
>  Sync Width = 48
>  Back Porch = 144
>  Sync Polarity = +
>  Back End Active = 1920
>  Front End Active = 1920
>  Scan Rate = 33.75kHz
>
>  Vertical:
>
>  Front Porch = 4
>  Sync Width = 10
>  Back Porch = 30
>  Sync Polarity = +
>  Back End Active = 540
>  Front End Ative = 1080
>  Refresh Rate = 30.026Hz
>
> Which I interpreted as Modeline "1920x1080-HD" 74.250 1920 2008 2056 2200
> 1080 1084 1094 1124 Interlace +vsync +hsync
>
>  To furthe complicate things I tried running PowerStrip and this is what it
> spit out for a Modeline(seemed to be identical for both 1920x1080 and
> 1768x992):
>
> "1920x1080" 74.250 1920 2008 2052 2200 1080 1084 1094 1125 interlace +hsync
> +vsync
>
> As you can see the last two are pretty close, only off by a couple digits.
> However, none of the modes I have tried have worked. For some reason when
> Linux reads the EDID it only reports back the 720x480 and 640x480 as valid
> modes, which both work. When I try and run the higher modes all I get is a
> black screen. The log file does say the Mode "X" was validated but I must
> have something wrong somewhere as I just keep getting the black screen. :(
>
> Here's part of my xorg.conf file. I have played with various "Options", you
> can see some of them in there.
>
> Section "Monitor"
>     # HorizSync source: edid, VertRefresh source: edid
>     Identifier     "Monitor0"
>     VendorName     "Unknown"
>     ModelName      "TCR RCA Scenium"
>     DisplaySize     183 103
>     HorizSync       30.0 - 34.0
>     VertRefresh     48.0 - 67.0
>     #   Option         "DPMS"
>     Modeline "1920x1080-HD" 74.250 1920 2008 2052 2200 1080 1084 1094 1125
> interlace +hsync +vsync
>     Modeline "1920x1080-HD2" 74.250 1920 2008 2056 2200 1080 1084 1094 1124
> interclace +hsync +vsync
>     Modeline "1768x992-HD" 74.250 1920 2008 2056 2352 1080 1084 1094 1212
> interlace +hsync +vsync
> EndSection
>
> Section "Device"
>     Identifier     "Videocard0"
>     Driver         "nvidia"
>     VendorName     "NVIDIA Corporation"
>     BoardName      "GeForce 6600"
>     Option         "UseEvents" "true"
>     #Option         "UseEDID" "FALSE"
>     #Option         "ModeValidation" "NoEdidModes"
>     #Option         "ExactModeTimingsDVI" "True"
>
> EndSection
>
> Section "Screen"
>     Identifier     "Screen0"
>     Device         "Videocard0"
>     Monitor        "Monitor0"
>     DefaultDepth    24
>     Option         "SecurityTypes" "VncAuth"
>     Option         "UserPasswordVerifier" "VncAuth"
>     Option         "PasswordFile" "/root/.vnc/passwd"
>     Option "MetaModes" "DFP-0: 1768x992-HD +0+0"
>     SubSection     "Display"
>       Depth       24
> #     Modes       "1920x1080-HD" "1768x992-HD" "1920x1080-HD2"
>     EndSubSection
> EndSection
>
>
> If anyone can help me with this mess it would be greatly appreciated!! I am
> likely way off on some of my calculated ModeLines as I am new to this or
> maybe there is some settings I am missing from my xorg.conf. I find it
> rather confusing at times. :-P
>
> Thanks in advance for any insight.
>
> Kevin
>
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>

I don't have an HDTV but I wasn't aware you needed to specify "-HD" on
the modeline.  The resolution is what is "HD." Have you tried them
without the -HD suffix?