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On Tue, Jan 17, 2017 at 5:42 PM, Alastair Bridgewater <alastair.bridgewater at gmail.com> wrote: > HDMI specification 1.4a, table 8-15 is very explicitly a "must > support at least one of" table, not a "must support all of" table. > It is not hard to find hardware that does not support some of the > so-called "mandatory" modes. > > More

...video format shall support *all* of <list of mandatory formats>" The 3D pdf extraction from the spec is available would one want to triple check the above: http://www.hdmi.org/manufacturer/specification.aspx I have even dug up a direct link that someone made available: https://etmriwi.home.xs4all.nl/forum/hdmi_spec1.4a_3dextraction.pdf Look for 3D_present, p. 15 and 17. If the above is indeed correct, there may still be an issue in the way we derive the mandatory modes - that part isn't really clear. Or, it could be that people don't follow standards! HTH, -- Damien

...;list of mandatory formats>" > > The 3D pdf extraction from the spec is available would one want to > triple check the above: > > http://www.hdmi.org/manufacturer/specification.aspx > > I have even dug up a direct link that someone made available: > > https://etmriwi.home.xs4all.nl/forum/hdmi_spec1.4a_3dextraction.pdf > > Look for 3D_present, p. 15 and 17. > > If the above is indeed correct, there may still be an issue in the way > we derive the mandatory modes - that part isn't really clear. Or, it > could be that people don't follow...