[Bug 87671] [BSW Bisected] eDP screen is blank when external HDMI monitor is connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87671

--- Comment #5 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Vandana Kannan from comment #4)
> To enable BLC, VBT version >= 191 needs to have control pin set to 2 (DDI
> PWM). This is because only PWM via DDI has been enabled as of now.
> This check has to be changed when support for any of the other control pins
> would be added.

So you're saying the VBT spec was changed, but the VBT on these platforms does
not conform to the spec?

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