[Bug 81895] New: [BDW Regression]4k resolution can't be found when connect machine with 4k monitor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81895

          Priority: medium
            Bug ID: 81895
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Regression]4k resolution can't be found when
                    connect machine with 4k monitor
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: lei.a.liu at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 103668
  --> https://bugs.freedesktop.org/attachment.cgi?id=103668&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes

Good commit on drm-next: 008f40451d0e59f220a4fa13aaf75d04303a01a1

Non-working platforms: BDW 

==kernel==
--------------------------
origin/drm-intel-nightly: 8734408c113bb38234ed03ec51c723b3deff579b(fails)
    drm-intel-nightly: 2014y-07m-18d-15h-21m-24s integration manifest
origin/drm-intel-next-queued: 34548e510657af829032f23128c0c01ebe48ef21(works)
    drm/i915: Do not unmap object unless no other VMAs reference it  
origin/drm-intel-fixes: c6930992948adf0f8fc1f6ff1da51c5002a2cf95(works)
    Revert "drm/i915: reverse dp link param selection, prefer fast over wide
again"

origin/drm-fixes: 3c169e5629d6bce9aede3907aeb38f1c23f61952(works)
    Merge branch 'drm-fixes-3.16' of git://people.freedesktop.org/~agd5f/linux
into drm-fixes
origin/drm-next:b957f457fbce30cc4901dc28f2b56f2b15dfe84a(fails)
    drm/radeon: use helpers

==Bug detailed description==
-----------------------------
4k resolution can't be found when connect machine with 4k monitor
Output :
[root at x-bdw01 ~]# /GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests/testdisplay
-i
Connectors:
38      28      connected       DP      700x390         16
  modes:
  name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot flags type clock
[0]  1920x2160 60 1920 1968 2000 2080 2160 2163 2173 2222 0x9 0x48 277250
[1]  1920x1200 60 1920 2056 2256 2592 1200 1203 1209 1245 0x6 0x40 193250
[2]  1920x1080 60 1920 2040 2248 2576 1080 1081 1084 1118 0x6 0x0 172780
[3]  1600x1200 60 1600 1664 1856 2160 1200 1201 1204 1250 0x5 0x40 162000
[4]  1680x1050 60 1680 1784 1960 2240 1050 1053 1059 1089 0x6 0x40 146250
[5]  1280x1024 75 1280 1296 1440 1688 1024 1025 1028 1066 0x5 0x40 135000
[6]  1280x1024 60 1280 1328 1440 1688 1024 1025 1028 1066 0x5 0x40 108000
[7]  1280x800 60 1280 1352 1480 1680 800 803 809 831 0x9 0x40 83500
[8]  1152x864 75 1152 1216 1344 1600 864 865 868 900 0x5 0x40 108000
[9]  1024x768 75 1024 1040 1136 1312 768 769 772 800 0x5 0x40 78800
[10]  1024x768 60 1024 1048 1184 1344 768 771 777 806 0xa 0x40 65000
[11]  800x600 75 800 816 896 1056 600 601 604 625 0x5 0x40 49500
[12]  800x600 60 800 840 968 1056 600 601 605 628 0x5 0x40 40000
[13]  640x480 75 640 656 720 840 480 481 484 500 0xa 0x40 31500
[14]  640x480 60 640 656 752 800 480 490 492 525 0xa 0x40 25200
[15]  720x400 70 720 738 846 900 400 412 414 449 0x6 0x40 28320

CRTCs:
id      fb      pos     size
7       35      (0,0)   (1920x1080)
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
11      35      (0,0)   (1920x1080)
  1920x1080 60 1920 2040 2248 2576 1080 1081 1084 1118 0x6 0x0 172780
15      0       (0,0)   (0x0)
   0 0 0 0 0 0 0 0 0 0x0 0x0 0
==Reproduce steps==
---------------------------- 
1.  Boot the device with 4K monitor
2.  ./testdisplay -i

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20140730/5159a75f/attachment.html>