[mythtv-users] Modelines

[Batshua bat Yehonatan]

Chiming in:

I've been having trouble with getting my resolution to work over HDMI for a
while. I fixed it once with a great deal of help, but then I had to
reinstall the OS and of course, failed to record how I'd fixed it before.
If anyone's up for another custom Modeline puzzle, I'd love some help, too.

Thanks,
Batshua


On Mon, Jan 27, 2014 at 11:02 AM, Kenni Lund <kenni at kelu.dk> wrote:

> On 2014-01-27 Mike Perkins <mikep at randomtraveller.org.uk> wrote:
> > On 27/01/14 13:50, Robert Dege wrote:
> >>
> >> Is it possible to use a custom Modeline if connecting to a TV over HDMI?
> >> I
> >> know that this article (http://www.mythtv.org/wiki/Modeline_Database)
> says
> >> it's ignored if TV-OUT has been configured, but I don't know if that
> >> applies here, since HDMI can be used to connect to monitors as well.
> >> Plus,
> >> I have no TV-OUT setup in the xorg.conf.
> >>
> >> Both the mythfrontend UI, and TV playboack are larger than the physical
> >> screen (overscan?).  I used the screen wizard in the mythfrontend setup
> >> menu to adjust the dimensions.  While it did help a bit, the display is
> >> still too large.  I'm hoping a custom modeline might help.
> >>
> >> Mythbuntu 12.04
> >> Mythtv 0.27
> >> nVidia GT520 using 304.88-0ubuntu0.0.3 drivers
> >>
> > Since HDMI is all digital there should be nothing to configure in xorg,
> it
> > "just works".
> >
> > There is an overscan issue which can usually be resolved by digging
> through
> > your TV setup menus. It might be called something like "PC Game Mode".
> >
> > If your TV has more than one HDMI input you might try all of them. One of
> > our TVs had different options for some of the inputs (ie "Game Mode"/"PC
> > mode"/Exact Scaling"/whatever) was only available on HDMI2.
>
> Exactly, and also remember to check the zoom-levels of the TV if the
> above doesn't help.
>
> If trying the other HDMI-connectors on the TV and changing the TV
> configuration doesn't help, the mode lines from the JudderFree guide
> serves as a good starting point:
>
> http://www.mythtv.org/wiki/User_Manual:JudderFree#The_pain_with_TVs_reporting_incomplete_EDID
>
> I've copy-pasted my own xorg.conf to pastebin, which you can use for
> inspiration or perhaps copy-paste directly. I use it for my Mythbuntu
> 12.04 frontends with Nvidia graphics and 1920x1080 TVs, so it's likely
> very similar to what you want to achieve:
> http://pastebin.com/raw.php?i=VuD0T2Rh
>
> On 2014-01-27 15.51 "Raymond Wagner" <raymond at wagnerrp.com> wrote:
> > The screen setup wizard will let you exactly match MythTV's UI to you
> display.  The only reason you should need to tinker with modelines is if
> you're using applications outside of MythTV.
>
> Another reason to tinker with modelines, rather then using the screen
> setup wizard is to get 1:1 pixel mapping or to get judderfree playback
> by utilizing refresh rates which aren't announced by the TV. I would
> personally only use the screen setup wizard as a very last resort,
> when all other posibilities have been eliminated. I have yet to come
> across a LCD/LED TV which couldn't be fixed with prober mode lines in
> combination with a correctly configured TV.
>
> Best regards
> Kenni
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