[Bug 70132] [sna igb] multihead output stopped working

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70132

--- Comment #17 from Chris Wilson <chris at chris-wilson.co.uk> ---
The modes come from two places. The first is read back from the crtc, the
second is read back from the output. They should be identical in the kernel.
They look identical in xrandr, so I'm trying to figure out the magic that is
used by RandR to identify the current mode on the output.

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