[Bug 107476] Native DisplayPort always defaults to incorrect limited-range RGB on Intel Graphics for 24bpp+ displays

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107476

Nicholas Stommel <nicholas.stommel at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      i915 features|display/DP, display/LSPCON  |
            Summary|DisplayPort and LSPCON      |Native DisplayPort always
                   |always defaults to          |defaults to incorrect
                   |incorrect limited-range RGB |limited-range RGB on Intel
                   |on Intel Graphics for       |Graphics for 24bpp+
                   |24bpp+ displays             |displays

--- Comment #19 from Nicholas Stommel <nicholas.stommel at gmail.com> ---
Jani Nikula's patch works great for native DisplayPort connections and doesn't
negatively impact native HDMI connections either, which is fantastic.
Unfortunately, I'm not having much luck with DP-LSPCON->HDMI. I am still unable
to get automatic full-range color over DP-LSPCON->HDMI on my test monitors that
work fine with native HDMI and native DP after the patch. I'm afraid I cannot
accurately test LSPCON as I happen to be afflicted by this separate,
unfortunate native-resolution bug:
https://bugs.freedesktop.org/show_bug.cgi?id=107503 I will move the LSPCON
discussion back to https://bugs.freedesktop.org/show_bug.cgi?id=100023 to be
resolved separately, and edit the title of this bug to reflect the change,
limiting the issue at hand to just native DP. 

The primary bug, and the one for which I originally filed, is native
DisplayPort RGB automatic color-range detection on Intel integrated graphics,
which has been resolved beautifully in Jani's patch. I can finally use my
native DisplayPorts as intended. All things considered, the main problem was
resolved effectively. Remaining concerns about LSPCON I will redirect to the
other open bug thread, perhaps others will have different results over LSPCON
with the patch? Overall, I think this was a *great* step forward. Automatic RGB
color-range detection over native DisplayPort is finally working properly.
Please merge Jani's patch fixing native DP color-range handling.

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