[Bug 81895] [HSW/BDW Bisected SST/MST] 4k resolution cannot be found when connected by MST (but is shown for SST)

[bugzilla-daemon at freedesktop.org]

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

--- Comment #16 from liulei <lei.a.liu at intel.com> ---
[root at x-bdw01 tests]# uname -a
Linux x-bdw01 3.17.0-rc1_liulei_7d1311_20140825+ #2 SMP Mon Aug 25 09:15:51 EDT
2014 x86_64 x86_64 x86_64 GNU/Linux
[root at x-bdw01 tests]# ./testdisplay -i
Connectors:
id      encoder status          type    size (mm)       modes
18      0       connected       eDP     280x160         1
  modes:
  name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot flags type clock
[0]  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
26      25      connected       DP      700x390         32
  modes:
  name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot flags type clock
[0]  3840x2160 30 3840 3888 3920 4000 2160 2163 2168 2191 0x9 0x48 262750
[1]  3840x2160 30 3840 4016 4104 4400 2160 2168 2178 2250 0x5 0x40 300000
[2]  1920x1200 60 1920 2056 2256 2592 1200 1203 1209 1245 0x6 0x40 193250
[3]  1920x1080 60 1920 2008 2052 2200 1080 1082 1087 1125 0x5 0x40 148500
[4]  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40 148500
[5]  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40 148352
[6]  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 0x15 0x40 74250
[7]  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 0x15 0x40 74176
[8]  1920x1080 50 1920 2448 2492 2640 1080 1084 1089 1125 0x5 0x40 148500
[9]  1920x1080i 50 1920 2448 2492 2640 1080 1084 1094 1125 0x15 0x40 74250
[10]  1920x1080 24 1920 2558 2602 2750 1080 1084 1089 1125 0x5 0x40 74250
[11]  1920x1080 24 1920 2558 2602 2750 1080 1084 1089 1125 0x5 0x40 74176
[12]  1600x1200 60 1600 1664 1856 2160 1200 1201 1204 1250 0x5 0x40 162000
[13]  1680x1050 60 1680 1784 1960 2240 1050 1053 1059 1089 0x6 0x40 146250
[14]  1280x1024 75 1280 1296 1440 1688 1024 1025 1028 1066 0x5 0x40 135000
[15]  1280x1024 60 1280 1328 1440 1688 1024 1025 1028 1066 0x5 0x40 108000
[16]  1280x800 60 1280 1352 1480 1680 800 803 809 831 0x9 0x40 83500
[17]  1152x864 75 1152 1216 1344 1600 864 865 868 900 0x5 0x40 108000
[18]  1280x720 60 1280 1390 1430 1650 720 725 730 750 0x5 0x40 74250
[19]  1280x720 60 1280 1390 1430 1650 720 725 730 750 0x5 0x40 74176
[20]  1280x720 50 1280 1720 1760 1980 720 725 730 750 0x5 0x40 74250
[21]  1024x768 75 1024 1040 1136 1312 768 769 772 800 0x5 0x40 78800
[22]  1024x768 60 1024 1048 1184 1344 768 771 777 806 0xa 0x40 65000
[23]  800x600 75 800 816 896 1056 600 601 604 625 0x5 0x40 49500
[24]  800x600 60 800 840 968 1056 600 601 605 628 0x5 0x40 40000
[25]  720x576 50 720 732 796 864 576 581 586 625 0xa 0x40 27000
[26]  720x480 60 720 736 798 858 480 489 495 525 0xa 0x40 27027
[27]  720x480 60 720 736 798 858 480 489 495 525 0xa 0x40 27000
[28]  640x480 75 640 656 720 840 480 481 484 500 0xa 0x40 31500
[29]  640x480 60 640 656 752 800 480 490 492 525 0xa 0x40 25200
[30]  640x480 60 640 656 752 800 480 490 492 525 0xa 0x40 25175
[31]  720x400 70 720 738 846 900 400 412 414 449 0x6 0x40 28320
30      0       disconnected    HDMI-A  0x0             0
33      0       disconnected    HDMI-A  0x0             0

CRTCs:
id      fb      pos     size
7       0       (0,0)   (0x0)
   0 0 0 0 0 0 0 0 0 0x0 0x0 0
11      0       (0,0)   (0x0)
   0 0 0 0 0 0 0 0 0 0x0 0x0 0
15      37      (0,0)   (3840x2160)
  3840x2160 30 3840 3888 3920 4000 2160 2163 2168 2191 0x9 0x48 262750

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