[Bug 90861] New: [HSW GT2 Regression ]Black screen after boot up machine

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90861

            Bug ID: 90861
           Summary: [HSW GT2 Regression ]Black screen after boot up
                    machine
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: yex.tian at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 116302
  --> https://bugs.freedesktop.org/attachment.cgi?id=116302&action=edit
dmesg info

==System Environment==       
-----------------------------------------------------
Regression: Yes
Non-working platforms: HSW GT2

==Kernel==
--------------------------------------------------
commit 0761e2d5d55e8311950514fda1ec414838525985
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Thu Jun 4 16:19:46 2015 +0300

    drm-intel-nightly: 2015y-06m-04d-13h-19m-27s UTC integration manifest
==Bug detailed description==
--------------------------------------------------
Black screen after boot up machine on the latest nightly and next-queued
kernel, It does not exists on drm-intel-fixes branch.

==Reproduce steps==
----------------------------
1, boot up machine

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