Created attachment 104654 [details]
dmesg

==System Environment==
--------------------------
Regression: No.
This case always fails

Non-working platforms: BSW

==kernel==
--------------------------
origin/drm-intel-nightly: 2b6e6b9c29dbdaf596cad99877384af8b406d103(fails)
    drm-intel-nightly: 2014y-08m-14d-22h-50m-42s integration manifest
origin/drm-intel-next-queued: 4ed91096881449012b14b1e879f40b4a37533e0e(fails)
    drm/i915: Track cursor changes as frontbuffer tracking flushes
origin/drm-intel-fixes: 103ae732ad26141515f109c80b5c1ced16e457c3(fails)
    drm/i915: Don't try to enable cursor from setplane when crtc is disabled

==Bug detailed description==
-----------------------------
igt/kms_sink_crc_basic fails

Output:
[root@x-bsw01 tests]# ./kms_sink_crc_basic
IGT-Version: 1.7-g5c7bcb1 (x86_64) (Linux: 3.16.0_drm-intel-nightly_2b6e6b_20140815+ x86_64)
Test assertion failure function basic_sink_crc_check, file kms_sink_crc_basic.c:135:
Failed assertion: strcmp(ref_crc_black, ref_crc_white) != 0
[root@x-bsw01 tests]# dmesg -r|egrep ""<[1-4]>""|grep drm
<3>[ 2607.875641] [drm:wait_panel_status] *ERROR* Panel status timeout: status a0000002 control abcd0000
<4>[ 2607.897676] WARNING: CPU: 0 PID: 4662 at drivers/gpu/drm/i915/intel_dp.c:3263 chv_post_disable_dp+0x54/0x10f [i915]()
<4>[ 2607.897680] Modules linked in: ip6table_filter ip6_tables ipv6 iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic serio_raw pcspkr snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep r8169 snd_pcm snd_timer snd soundcore battery ac option usb_wwan usbserial i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[ 2607.897730] CPU: 0 PID: 4662 Comm: kms_sink_crc_ba Tainted: G        W     3.16.0_drm-intel-nightly_2b6e6b_20140815+ #1436
<4>[ 2607.897997]  [<ffffffffa001818b>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[ 2607.898015]  [<ffffffffa001bba6>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[ 2607.898030]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[ 2607.898047]  [<ffffffffa001b7c0>] ? drm_mode_setplane+0x16d/0x16d [drm]
<3>[ 2609.154324] [drm:intel_dp_start_link_train] *ERROR* failed to enable link training
<3>[ 2609.174484] [drm:intel_dp_complete_link_train] *ERROR* failed to start channel equalization
<4>[ 2609.179348] WARNING: CPU: 3 PID: 4662 at drivers/gpu/drm/i915/intel_display.c:10650 intel_modeset_check_state+0x320/0x611 [i915]()
<4>[ 2609.179380] Modules linked in: ip6table_filter ip6_tables ipv6 iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic serio_raw pcspkr snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep r8169 snd_pcm snd_timer snd soundcore battery ac option usb_wwan usbserial i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[ 2609.179385] CPU: 3 PID: 4662 Comm: kms_sink_crc_ba Tainted: G        W     3.16.0_drm-intel-nightly_2b6e6b_20140815+ #1436
<4>[ 2609.179557]  [<ffffffffa001818b>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[ 2609.179564]  [<ffffffffa005dab1>] ? restore_fbdev_mode+0xa9/0xc2 [drm_kms_helper]
<4>[ 2609.179571]  [<ffffffffa005dae7>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x1d/0x34 [drm_kms_helper]
<4>[ 2609.179578]  [<ffffffffa005ee21>] ? drm_fb_helper_set_par+0x3a/0x59 [drm_kms_helper]
<3>[ 2609.187686] [drm:intel_pipe_config_compare] *ERROR* mismatch in has_dp_encoder (expected 1, found 0)
<4>[ 2609.187719] WARNING: CPU: 3 PID: 4662 at drivers/gpu/drm/i915/intel_display.c:10720 check_crtc_state+0xa32/0xa6a [i915]()
<4>[ 2609.187746] Modules linked in: ip6table_filter ip6_tables ipv6 iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic serio_raw pcspkr snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep r8169 snd_pcm snd_timer snd soundcore battery ac option usb_wwan usbserial i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[ 2609.187751] CPU: 3 PID: 4662 Comm: kms_sink_crc_ba Tainted: G        W     3.16.0_drm-intel-nightly_2b6e6b_20140815+ #1436
<4>[ 2609.187945]  [<ffffffffa001818b>] ? drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[ 2609.187952]  [<ffffffffa005dab1>] ? restore_fbdev_mode+0xa9/0xc2 [drm_kms_helper]
<4>[ 2609.187959]  [<ffffffffa005dae7>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x1d/0x34 [drm_kms_helper]
<4>[ 2609.187966]  [<ffffffffa005ee21>] ? drm_fb_helper_set_par+0x3a/0x59 [drm_kms_helper]


Reproduce steps:
-------------------------
1. ./kms_sink_crc_basic