[Bug 58701] [ALL]I-G-T/testdisplay && 1920x1080i showing not full

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58701

--- Comment #13 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
All of the "bad" modes mentioned here are what CEA-861 call CE video formats
(as opposed to IT video formats).

CEA-861 also states that in case the source doesn't transmit the
overscan/underscan information, the sink should assume CE formats are
overscanned and IT formats underscanned.

So it sounds like the display is just following CEA-861 to the letter. Whether
that makes any sense for a DP display is another matter. DP spec doesn't
mentione anything about overscan.

A bit of googling indicated that people are having similar issues with this
display on some other operating systems as well.

So yeah, sounds like we'd need to add infoframe support for DP so that we could
force the sink to use underscan.

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