[Bug 73855] Monitor flashes on and off

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73855

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
For the record, I am thinking of bug 68030, which should have been fixed by

kernel commit c9976dcf55c8aaa7037427b239f15e5acfc01a3a
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Sun Sep 29 19:15:07 2013 +0100

    drm/i915: Only apply DPMS to the encoder if enabled

    The current test for an attached enabled encoder fails if we have
    multiple connectors aliased to the same encoder - both connectors
    believe they own the enabled encoder and so we attempt to both enable
    and disable DPMS on the encoder, leading to hilarity and an OOPs:

which should have been in v3.12.

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