[Bug 80355] DP MST problems with xrandr while re-docking

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80355

--- Comment #25 from Chris Wilson <chris at chris-wilson.co.uk> ---
Spotted some bad behaviour where we did not recognise DP3/DP4/DP5 being
reattached (with new connector ids, so new object with old names) as they
didn't have an associated MST path.

commit 204ec74a61ba0b9628c686b98c48fa1220866c2d
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Wed Jun 25 07:31:33 2014 +0100

    sna: Check all connectors for reuse

    Do not rely on the MST path being present to indicate a connector that
    may be reused.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80355
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

That should tidy up the detection. Can you please attach a new debug log and
describe the behaviour?

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