[Bug 87319] [BDW] Dock with builtin DP/VGA "dongle" fails cycling through modes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87319

--- Comment #21 from Gary Wang <gary.c.wang at intel.com> ---
Created attachment 111224
  --> https://bugs.freedesktop.org/attachment.cgi?id=111224&action=edit
Lost hot-plug event when VGA output is turned off

I found when turn off "VGA display" by UI or xrandr, the necessary hot-plug
event was lost, and caused the it (i.e. DP1 disconnected).

@Timo/Rodrigo, do you have any idea on hoe to clarify DP-hub works correctly or
not?

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