[Bug 65524] [sdvo lvds regression] "Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65524

--- Comment #9 from Daniel Vetter <daniel at ffwll.ch> ---
Spec says clearly that the sdvo signal must be at least 100MHz, and at least
the two sdvo encoders I have here (one DVI, other HDMI) have no issues with the
low-res modes.

My pet theory here is simply that this board/sdvo encoder combination has a
problem with 4x pixel multiplier mode and the firmware engineer "fixed" this by
frobbing the mode in the vbt a bit to push it over 50MHz dotclock.

We could test this if you force the 4x mutliplier on the vbt mode, sdvo
dotclock should be in the range 100-225MHz iirc, so it should still work.

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