[Bug 96226] [IGT] [BXT-P/KBL/BSW/BDW] some kms_flip subtests causes [i915]] *ERROR* CPU pipe B/C FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96226

maria guadalupe <maria.g.perez.ibarra at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      i915 platform|                            |BDW
            Summary|[IGT] [BXT-P/KBL/BSW] some  |[IGT] [BXT-P/KBL/BSW/BDW]
                   |kms_flip subtests causes    |some kms_flip subtests
                   |[i915]] *ERROR* CPU pipe    |causes [i915]] *ERROR* CPU
                   |B/C FIFO underrun           |pipe B/C FIFO underrun

--- Comment #24 from maria guadalupe <maria.g.perez.ibarra at intel.com> ---
issue is still present over BDW with the following configuration 

test
=====================================
igt at kms_flip@vblank-vs-suspend-interruptible
igt at kms_flip@wf_vblank-vs-dpms-interruptible
igt at kms_flip@wf_vblank-vs-modeset
igt at kms_flip@2x-vblank-vs-modeset-suspend-interruptible

 Software
======================================
kernel version              : 4.12.0-drm-tip-ww28-commit-f1619bb+
architecture                : x86_64
os version                  : Ubuntu 16.10
os codename                 : yakkety
kernel driver               : i915
bios revision               : 5.6
hardware acceleration       : disabled
swap partition              : enabled on (/dev/sda3)

======================================
        Graphic drivers
======================================
modesetting                 : enabled
modesetting compiled for    : 1.18.4 X.Org Video Driver
xorg-xserver                : 1.18.4
libdrm                      : 2.4.70
libva                       : 1.7.1-2
vaapi (intel-driver)        : 1.7.1
cairo                       : 1.14.6-1build1
intel-gpu-tools             : 1.16-1

======================================
             Hardware
======================================
platform                   : Broadwell
motherboard id             : NUC5i5MYBE
form factor                : Desktop
cpu family                 : Core i5
cpu information            : Intel(R) Core(TM) i5-5300U CPU @ 2.30GHz
gpu card                   : Intel Corporation HD Graphics 5500 (rev 09)
(prog-if 00 [VGA controller])
memory ram                 : 11.62 GB
max memory ram             : 16 GB
signature                  : Type 0, Family 6, Model 61, Stepping 4
hard drive                 : 111GiB (120GB)
current cd clock frequency : 337500 kHz
maximum cd clock frequency : 540000 kHz
displays connected         : DP-1 DP-2

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