[Bug 97573] New: [IVB/SNB/BYT/HSW/BDW] GuC boot kernel command lines are causing regressions

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97573

            Bug ID: 97573
           Summary: [IVB/SNB/BYT/HSW/BDW] GuC boot kernel command lines
                    are causing regressions
           Product: DRI
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: christophe.prigent at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 126168
  --> https://bugs.freedesktop.org/attachment.cgi?id=126168&action=edit
IVB_igt-basic_guc-commands_kern.log

Platform: IVB
CPU: Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz (Family 6, Model 58, Stepping 9)
Motherboard version: DH77EB
GPU: Intel® HD Graphics 4000 - Xeon E3-1200 v2/3rd Gen Core processor Graphics
Controller

Software
Bios: BH7710H.86A.0096.2012.1012.1645
Linux distribution: Ubuntu 16.04 64 bits

Kernel: 4.8.0-rc4 f4f46e5 from http://cgit.freedesktop.org/drm-intel/
  commit f4f46e5544894b2198cdfd5a226ee587d9834cc4}}
  Author: Daniel Vetter <daniel.vetter at ffwll.ch>
  Date: Mon Aug 29 16:09:42 2016 +0200
  drm-intel-nightly: 2016y-08m-29d-14h-09m-23s UTC integration manifest
ibdrm-2.4.70-2 b214b05 from git://anongit.freedesktop.org/mesa/drm
mesa: mesa-11.2.2 3a9f628from git://anongit.freedesktop.org/mesa/mesa
cairo 1.15.2 db8a7f1 from git://anongit.freedesktop.org/cairo
xorg-server-1.18.0-535 25e4f9e from git://git.freedesktop.org/git/xorg/xserver
xf86-video-intel 2.99.917-698 71d3273 from
git://git.freedesktop.org/git/xorg/driver/xf86-video-intel
libva-1.7.0-47 2ebf897 from git://git.freedesktop.org/git/vaapi/libva 
vaapi-intel-driver: 1.7.0-95 1817bee from
git://git.freedesktop.org/git/vaapi/intel-driver
Intel-Gpu-Tools 1.15 572a770 from
http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git

External screen: DELL U2311Hb

Steps:
------
1. Boot with kernel boot command lines: 
i915.enable_guc_loading=2 i915.enable_guc_submission=2
2. Execute some IGT tests

Actual results:
---------------
2. Trying to load GuC is causing 69 regressions on the basic IGT tests

Expected result:
---------------
2. Trying to load GuC has no impact

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