[Bug 98267] New: [SNB] drm-intel-nightly takes long time to start

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98267

            Bug ID: 98267
           Summary: [SNB] drm-intel-nightly takes long time to start
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: maria.g.perez.ibarra at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 127311
  --> https://bugs.freedesktop.org/attachment.cgi?id=127311&action=edit
dmesg.log

Bug description
=============================================
in SNB with drm-intel-nightly takes a long time to boot into user interface,
please see the following example

kernel                                        time to boot into X
==================================================================
4.8.0-drm-intel-nightly-ww42-commit-fc23e80+      4min
4.4.0-38-generic                                  4 min
4.4.0-21-generic                                  6min


Software information
============================================
Kernel version                  : 4.8.0-drm-intel-nightly-ww42-commit-fc23e80+
Linux distribution              : Ubuntu 16.04.1 LTS
Architecture                    : 64-bit
xf86-video-intel version        : 2.99.917
Xorg-Xserver version            : 1.18.3
DRM version                     : 2.4.71
Cairo version                   : 1.15.2
Intel GPU Tools version         : Tag [intel-gpu-tools-1.16-59-g48a9e1e] /
Commit [48a9e1e]
Kernel driver in use            : i915
Bios revision                   : 4.6
KSC revision                    : Not found <-- maybe the DUT doesn't has this
firmware


 Hardware information
============================================
Platform                        : SNB
Motherboard model               : OptiPlex 990
Motherboard type                : 06D7TR Mini Tower
Motherboard manufacturer        : Dell Inc.
CPU family                      : Core i7
CPU information                 : Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
GPU Card                        : Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA
controller])
Memory ram                      : 8 GB
Maximum memory ram allowed      : 32 GB
CPU thread                      : 8
CPU core                        : 4
Signature                       : Type 0, Family 6, Model 42, Stepping 7
Hard drive capacity             : 1863GiB (2TB)

 Kernel parameters
============================================
 quiet drm.debug=14 resume=/dev/sda3


Notes : 
===================================
Maybe is expected that in this platform drm-intel-nightly takes long time to
start X or maybe no, plese confirm it


Attachments:
=====================================
dmesg.log

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