[mythtv-users] Nvidia DPI 1080x540

Chris Ribe chrisribe at gmail.com
Sun Oct 28 19:14:42 UTC 2007


On 10/28/07, Chris Ribe <chrisribe at gmail.com> wrote:
>
> Hello all,
>       I am struggling to get my frontend to play video correctly on my new
> TV.   It is a 1080i RPTV that I have working with a custom 1080x540
> modeline.   When I playback recording or watch live TV, I get horizontally
> squished video, as if myth believes there are square pixels.
>
> I am running last weeks SVN, the most recent Nvidia drivers with a 7200GS
> graphics card, and I have followed the instructions in several howtos on the
> wiki, which have lead me to this xorg.conf  (edited to remove irrelevant
> information):
>
>
> Section "Device"
>         Identifier      "7200GS"
>         Driver          "nvidia"
>         BusID           "PCI:2:0:0"
>         Option  "NoBandWidthTest"       "true"
>        Option  "UseEdidDpi"    "false"
>        Option  "UseEDID"       "false"
>        Option  "UseEdidFreqs"  "false"
> Option  "ModeValidation"        "DFP-0: NoEdidModes,NoMaxPClkCheck,
> NoVesaModes,
>  AllowInterlacedModes,NoDFPNativeResolutionCheck, NoHorizSyncCheck,
> NoVertRefres
> hCheck"
>         Option   "ExactModeTimingsDVI"   "true"
>         Option          "UseFBDev"              "false"
> EndSection
>
>
> Section "Monitor"
>         Identifier      "51S500"
>         Option          "DPMS"
>         DisplaySize     243.84 137.16
>         HorizSync 15-46
>         VertRefresh 59-61
>        Modeline "720hitachi" 79.5 1920 2088 2142 2412 540 572 576 592
> -hsync -vs
> ync
> EndSection
>
>
> From my understanding, the combination of the "UseEdidDpi"  "false" tag,
> the DisplaySize tag, and the resolution should lead the drive to compute a
> non-square DPI and video should display correctly.   Unfortunately, this
> isn't happening.
>
> Any suggestions would be greatly appreciated.


So, I was just googling things like "xorg" "DPI"  and "non square pixels,"
and one search returned my original message from the archives as it's 2nd
result.  That was disheartening.

Anyhow,  it caused me to reread my own message and discover that I said
1080x540 when I meant 1920x540.

So, 1920x540 is the resolution I'm working at, 100,50 is the DPI I'm looking
for.






-- 
TV/IT Engineer
WCJB-TV Gainesville, FL
(352) 416 0648
cribe at wcjb.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20071028/280b0b07/attachment.htm 


More information about the mythtv-users mailing list