[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 #11 from Chris Wilson <chris at chris-wilson.co.uk> ---
And this should fix the first crash you reported:

commit f22ea4e821a33eccd3a9283d7ab048857008f7e8
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Sun Jun 22 17:53:59 2014 +0100

    sna: Disable unused CRTC after undock events

    If undocking removes output (as the MST topology changes and some
    outputs then become unreachable), we may leave dangling CRTC. This
    confuses us, so disable any enabled but unconnected CRTC after the
    undock event.

    Reported-by: Sree Harsha Totakura <freedesktop at h.totakura.in>
    References: https://bugs.freedesktop.org/show_bug.cgi?id=80355#c5
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>


All that remains is to try and shed some light on the original bug.

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