This test have a warn on CFL QA

igt@kms_flip@2x-flip-vs-wf_vblank

====================================================
output sample
====================================================
Stdout	

IGT-Version: 1.20-g7d75119 (x86_64) (Linux: 4.14.0-rc8-drm-tip-ww45-commit-1342299+ x86_64)
Using monotonic timestamps
Beginning 2x-flip-vs-wf_vblank on pipe A:B, connector DP-1:DP-2
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x48 148500
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0xa 0x40 148500
Expected frametime: 16667us; measured 16666.3us +- 12.153us accuracy 0.22%

2x-flip-vs-wf_vblank on pipe A:B, connector DP-1:DP-2: PASSED

Beginning 2x-flip-vs-wf_vblank on pipe A:C, connector DP-1:DP-2
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x48 148500
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0xa 0x40 148500
Expected frametime: 16667us; measured 16666.8us +- 5.209us accuracy 0.09%

2x-flip-vs-wf_vblank on pipe A:C, connector DP-1:DP-2: PASSED

Beginning 2x-flip-vs-wf_vblank on pipe B:C, connector DP-1:DP-2
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x48 148500
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0xa 0x40 148500
Expected frametime: 16667us; measured 16667.3us +- 5.963us accuracy 0.11%

2x-flip-vs-wf_vblank on pipe B:C, connector DP-1:DP-2: PASSED

Subtest 2x-flip-vs-wf_vblank: SUCCESS (11.345s)

Stderr	

(kms_flip:2716) igt-kms-WARNING: connector 73/DP-3 has no modes
(kms_flip:2716) igt-kms-WARNING: connector 73/DP-3 has no modes
(kms_flip:2716) igt-kms-WARNING: connector 73/DP-3 has no modes
(kms_flip:2716) igt-kms-WARNING: connector 73/DP-3 has no modes
(kms_flip:2716) igt-kms-WARNING: connector 73/DP-3 has no modes
(kms_flip:2716) igt-kms-WARNING: connector 73/DP-3 has no modes


This is my configuration:

======================================
	Graphic stack
======================================
Component: drm
    tag: libdrm-2.4.81-96-g931f019
    commit: 931f01964a2f2a75e8563feccc70ac2eb0296d99

Component: cairo
    tag: 1.15.6-82-g164be89
    commit: 164be896603ceb419c5bc47c7348781f791f70e4

Component: intel-gpu-tools
    tag: intel-gpu-tools-1.19-481-g7d75119
    commit: 7d75119b7f23fb49af52463da9bcd62e64fe6a6f

Component: piglit
    tag: piglit-v1
    commit: 733e3ab212fcce735f47ed9f8659ccdf6f625a70

======================================
	     Software
======================================
kernel version              : 4.14.0-rc8-drm-tip-ww45-commit-1342299+
hostname                    : gfx-desktop
architecture                : x86_64
os version                  : Ubuntu 16.10
os codename                 : yakkety
kernel driver               : i915
bios revision               : 98.0
bios release date           : 07/30/2017
ksc                         : 1.5
hardware acceleration       : disabled
swap partition              : enabled on (/dev/sda3)

======================================
	Graphic drivers
======================================
libdrm                      : 2.4.88
cairo                       : 1.15.9
intel-gpu-tools (tag)       : intel-gpu-tools-1.19-481-g7d75119
intel-gpu-tools (commit)    : 7d75119

======================================
	     Hardware
======================================
motherboard model          : CoffeeLakeClientPlatform
motherboard id             : CoffeeLakeHDDR4RVP
form factor                : Laptop
manufacturer               : IntelCorporation
cpu family                 : Other
cpu family id              : 6
cpu information            : Genuine Intel(R) CPU 0000 @ 2.80GHz
gpu card                   : Intel Corporation Device 3e9b (prog-if 00 [VGA controller])
memory ram                 : 31.3 GB
max memory ram             : 32 GB
cpu thread                 : 12
cpu core                   : 6
cpu model                  : 158
cpu stepping               : 10
socket                     : Other
hard drive                 : 74GiB (80GB)
current cd clock frequency : 337500 kHz
maximum cd clock frequency : 675000 kHz
displays connected         : DP-1 DP-2 DP-3

======================================
	     Firmware
======================================
dmc fw loaded             : yes
dmc version               : 1.1
guc fw loaded             : fetch SUCCESS, load SUCCESS
guc version wanted        : wanted 9.14, found 9.14
guc version found         : wanted 9.14, found 9.14

======================================
	     kernel parameters
======================================
quiet splash drm.debug=0xe intel_iommu=igfx_off i915.alpha_support=1 i915.enable_guc_loading=2 i915.enable_guc_submission=2 resume=/dev/sda3

This test pass on CFL QA

igt@kms_flip@2x-flip-vs-wf_vblank

IGT-Version: 1.20-gac6739b (x86_64) (Linux: 4.15.0-rc1-drm-tip-ww48-commit-4faecf8+ x86_64)

Component: drm
    tag: libdrm-2.4.88-25-g1749d56
    commit: 1749d56ea00f350a74f662bdad82bcafa19889da

Component: cairo
    tag: 1.15.8-61-g84fc0ce
    commit: 84fc0ce91d1a57d20500f710abc0e17de82c67df

Component: intel-gpu-tools
    tag: intel-gpu-tools-1.20-169-gac6739b
    commit: ac6739bcc7ee9682b40e7b7ac9625674fe3dc95e

Component: piglit
    tag: piglit-v1
    commit: f76ed7991c8afd597a5797c0965c1d696e34f408