[Bug 63451] DP lost output after switching the terminal sometimes on Ivybridge plaform

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=63451

--- Comment #9 from XiongZhang <xiong.y.zhang at intel.com> ---
Created attachment 78966
  --> https://bugs.freedesktop.org/attachment.cgi?id=78966&action=edit
VGA is 1024 * 768, DP is 1920 X 1200, VGA can display but DP is lost

the register is almost the same between success and fail.

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