[Bug 69404] New: [Regression HSW ULT]igt/testdisplay -d 16 cause balckscreen with HDMI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69404

          Priority: medium
            Bug ID: 69404
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [Regression HSW ULT]igt/testdisplay -d 16 cause
                    balckscreen with HDMI
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: pengcheng.jiang at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Environment:
--------------------------
Kernel: (master)6e4664525b1db28f8c4e1130957f70a94c19213e
Author: Linus Torvalds <torvalds at linux-foundation.org>
Date:   Mon Sep 2 13:46:10 2013 -0700

    Linux 3.11

Bug Details:
---------------------------
Using HDMI output port,Running "./testdisplay -d 16" shows black screen after
runing about 12 modes, sometimes may just show black screen at the
beginning.The modes thatUsing command such as "./testdisplay -d 16 -o 22,12" to
test one mode also shows blackscreen.  

And I test with the image of 2013Q2RC2, it shows well.The commit info is:
Kernel: (linux-3.9.y)5dd2e9869de2d28fc7e5c274ff9c12af4361ba86
Some additional commit info:
Author: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Date:   Fri Jun 7 12:54:00 2013 -0700

    Linux 3.9.5

What's more I test with the latest nightly image of 20130916,it also has the
problem. If necessary I can bisect.

CRTS(3):[13]  1152x864 75 1152 1216 1344 1600 864 865 868 900 0x5 0x40 108000
CRTS(3):[14]  1280x720 60 1280 1390 1430 1650 720 725 730 750 0x5 0x40 74250
CRTS(3):[15]  1280x720 60 1280 1390 1430 1650 720 725 730 750 0x5 0x40 74176
CRTS(3):[16]  1280x720 50 1280 1720 1760 1980 720 725 730 750 0x5 0x40 74250
CRTS(3):[17]  1440x576 50 1440 1464 1592 1728 576 581 586 625 0xa 0x40 54000
CRTS(3):[18]  1440x576i 50 1440 1464 1590 1728 576 580 586 625 0x101a 0x40
27000
CRTS(3):[19]  1024x768 75 1024 1040 1136 1312 768 769 772 800 0x5 0x40 78800
CRTS(3):[20]  1024x768 70 1024 1048 1184 1328 768 771 777 806 0xa 0x40 75000
CRTS(3):[21]  1024x768 60 1024 1048 1184 1344 768 771 777 806 0xa 0x40 65000
CRTS(3):[22]  1440x480 60 1440 1472 1596 1716 480 489 495 525 0xa 0x40 54054
CRTS(3):[23]  1440x480 60 1440 1472 1596 1716 480 489 495 525 0xa 0x40 54000
CRTS(3):[24]  1440x480i 60 1440 1478 1602 1716 480 488 494 525 0x101a 0x40
27027
CRTS(3):[25]  1440x480i 60 1440 1478 1602 1716 480 488 494 525 0x101a 0x40
27000
CRTS(3):[26]  832x624 75 832 864 928 1152 624 625 628 667 0xa 0x40 57284
CRTS(3):[27]  800x600 75 800 816 896 1056 600 601 604 625 0x5 0x40 49500
CRTS(3):[28]  800x600 72 800 856 976 1040 600 637 643 666 0x5 0x40 50000
CRTS(3):[29]  800x600 60 800 840 968 1056 600 601 605 628 0x5 0x40 40000
CRTS(3):[30]  800x600 56 800 824 896 1024 600 601 603 625 0x5 0x40 36000
CRTS(3):[31]  720x576 50 720 732 796 864 576 581 586 625 0xa 0x40 27000
CRTS(3):[32]  720x480 60 720 736 798 858 480 489 495 525 0xa 0x40 27027
CRTS(3):[33]  1440x240 60 1440 1478 1602 1716 240 244 247 262 0x100a 0x40 27027
CRTS(3):[34]  720x480 60 720 736 798 858 480 489 495 525 0xa 0x40 27000
CRTS(3):[35]  1440x240 60 1440 1478 1602 1716 240 244 247 262 0x100a 0x40 27000
CRTS(3):[36]  640x480 75 640 656 720 840 480 481 484 500 0xa 0x40 31500
CRTS(3):[37]  640x480 73 640 664 704 832 480 489 491 520 0xa 0x40 31500
CRTS(3):[38]  640x480 67 640 704 768 864 480 483 486 525 0xa 0x40 30240
CRTS(3):[39]  640x480 60 640 656 752 800 480 490 492 525 0xa 0x40 25200
CRTS(3):[40]  640x480 60 640 656 752 800 480 490 492 525 0xa 0x40 25175
CRTS(3):[41]  720x400 70 720 738 846 900 400 412 414 449 0x6 0x40 28320


Reproduce Step:
-----------------------------
./testdisplay -d 16

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