[HELP NEEDED] Mid 2011 iMac with External Display. How to Display Higher Than 1080p Through HDMI?

Discussion in 'iMac' started by sebastianmoney, Dec 24, 2015.

  1. sebastianmoney macrumors newbie

    sebastianmoney

    Joined:
    Dec 24, 2015
    Location:
    Tokyo, Japan
    #1
    Hi all,



    Long story short, I bought a 40'' 4k Samsung TV to use as an external monitor. I know my mid 2011 iMac would not be able to handle 4k output but I was hoping to get at least 2k (2560x1440) like the native 27'' resolution. However, after using the 4k Belkin mini displayport to HDMI cable, my output resolution is still capped at 1080p. Is there anything I can do to at least get 2560x1440 on my new external?

    *edit 1: I've started playing with SwtichResX but still no luck. I will attach my EDID file.



    I have tried holding down option key while selecting resolution in preferences, still no luck.



    This is the Belkin cable I've got from Apple Store http://www.belkin.com/us/F2CD080-Belkin/p/P-F2CD080/



    Thank you very much for your support.


    iMac, OS X El Capitan (10.11.2), OS X


    EDID report generated by SwitchResX Version 4.5.3 (Intel - 64-bit) for display SAMSUNG


    -----------------------------------------------------
    ------------------- RAW DATA ------------------------
    -----------------------------------------------------
    0 1 2 3 4 5 6 7 8 9 A B C D E F
    -----------------------------------------------------
    0 | 00 FF FF FF FF FF FF 00 4C 2D 44 0C 01 00 00 01
    1 | 2A 18 01 03 80 59 32 78 0A 23 AD A4 54 4D 99 26
    2 | 0F 47 4A BD EF 80 71 4F 81 C0 81 00 81 80 95 00
    3 | A9 C0 B3 00 01 01 04 74 00 30 F2 70 5A 80 B0 58
    4 | 8A 00 50 1D 74 00 00 1E 02 3A 80 18 71 38 2D 40
    5 | 58 2C 45 00 50 1D 74 00 00 1E 00 00 00 FD 00 18
    6 | 4B 0F 51 1E 00 0A 20 20 20 20 20 20 00 00 00 FC
    7 | 00 53 41 4D 53 55 4E 47 0A 20 20 20 20 20 01 FE

    -----------------------------------------------------
    0 1 2 3 4 5 6 7 8 9 A B C D E F
    -----------------------------------------------------
    0 | 02 03 42 F1 53 5F 10 1F 04 13 05 14 20 21 22 5D
    1 | 5E 62 63 64 07 16 03 12 29 09 07 07 15 07 50 3D
    2 | 04 C0 83 01 00 00 E2 00 0F 6E 03 0C 00 10 00 B8
    3 | 3C 21 10 80 01 02 03 04 E3 06 05 01 E5 0E 60 61
    4 | 65 66 01 1D 80 D0 72 1C 16 20 10 2C 25 80 50 1D
    5 | 74 00 00 9E 66 21 56 AA 51 00 1E 30 46 8F 33 00
    6 | 50 1D 74 00 00 1E 00 00 00 00 00 00 00 00 00 00
    7 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 B3

    -----------------------------------------------------
    < 00FFFFFF FFFFFF00 4C2D440C 01000001 2A180103 80593278 0A23ADA4 544D9926 0F474ABD EF80714F 81C08100 81809500 A9C0B300 01010474 0030F270 5A80B058 8A00501D 7400001E 023A8018 71382D40 582C4500 501D7400 001E0000 00FD0018 4B0F511E 000A2020 20202020 000000FC 0053414D 53554E47 0A202020 202001FE 020342F1 535F101F 04130514 2021225D 5E626364 07160312 29090707 1507503D 04C08301 0000E200 0F6E030C 001000B8 3C211080 01020304 E3060501 E50E6061 6566011D 80D0721C 1620102C 2580501D 7400009E 662156AA 51001E30 468F3300 501D7400 001E0000 00000000 00000000 00000000 00000000 00000000 000000B3 >

    -----------------------------------------------------
    { 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x4C, 0x2D, 0x44, 0x0C, 0x01, 0x00, 0x00, 0x01, 0x2A, 0x18, 0x01, 0x03, 0x80, 0x59, 0x32, 0x78, 0x0A, 0x23, 0xAD, 0xA4, 0x54, 0x4D, 0x99, 0x26, 0x0F, 0x47, 0x4A, 0xBD, 0xEF, 0x80, 0x71, 0x4F, 0x81, 0xC0, 0x81, 0x00, 0x81, 0x80, 0x95, 0x00, 0xA9, 0xC0, 0xB3, 0x00, 0x01, 0x01, 0x04, 0x74, 0x00, 0x30, 0xF2, 0x70, 0x5A, 0x80, 0xB0, 0x58, 0x8A, 0x00, 0x50, 0x1D, 0x74, 0x00, 0x00, 0x1E, 0x02, 0x3A, 0x80, 0x18, 0x71, 0x38, 0x2D, 0x40, 0x58, 0x2C, 0x45, 0x00, 0x50, 0x1D, 0x74, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x18, 0x4B, 0x0F, 0x51, 0x1E, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x53, 0x41, 0x4D, 0x53, 0x55, 0x4E, 0x47, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xFE, 0x02, 0x03, 0x42, 0xF1, 0x53, 0x5F, 0x10, 0x1F, 0x04, 0x13, 0x05, 0x14, 0x20, 0x21, 0x22, 0x5D, 0x5E, 0x62, 0x63, 0x64, 0x07, 0x16, 0x03, 0x12, 0x29, 0x09, 0x07, 0x07, 0x15, 0x07, 0x50, 0x3D, 0x04, 0xC0, 0x83, 0x01, 0x00, 0x00, 0xE2, 0x00, 0x0F, 0x6E, 0x03, 0x0C, 0x00, 0x10, 0x00, 0xB8, 0x3C, 0x21, 0x10, 0x80, 0x01, 0x02, 0x03, 0x04, 0xE3, 0x06, 0x05, 0x01, 0xE5, 0x0E, 0x60, 0x61, 0x65, 0x66, 0x01, 0x1D, 0x80, 0xD0, 0x72, 0x1C, 0x16, 0x20, 0x10, 0x2C, 0x25, 0x80, 0x50, 0x1D, 0x74, 0x00, 0x00, 0x9E, 0x66, 0x21, 0x56, 0xAA, 0x51, 0x00, 0x1E, 0x30, 0x46, 0x8F, 0x33, 0x00, 0x50, 0x1D, 0x74, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xB3 }

    -----------------------------------------------------
    Valid EDID block #0: checksum ok
    Valid EDID block #1: checksum ok

    -----------------------------------------------------
    ------------------- MAIN EDID BLOCK -----------------
    -----------------------------------------------------

    EDID Version........1.3
    Manufacturer........SAM (4C2D)
    Product ID..........3140 (0C44)
    Serial Number.......01000001

    Manufactured........Week 42 of year 2014
    Max H Size..........89 cm
    Max V Size..........50 cm
    Gamma...............2.20

    Display Supported Features:
    ---------------------------


    Display type:
    -------------
    RGB 4:4:4 & YCrCb 4:4:4 Color Encoding Formats
    Display is non continuous frequency
    Default color space is not sRGB standard
    Preferred timing mode includes Native Pixel Format


    Input signal & sync:
    --------------------
    Digital Input
    Color Bit Depth is undefined
    Digital Interface is not defined


    Color info:
    -----------
    Red x = 0.641 Green x = 0.301 Blue x = 0.150 White x = 0.280
    Red y = 0.330 Green y = 0.601 Blue y = 0.061 White y = 0.290

    Established Timings:
    --------------------
    720 x 400 @ 70Hz
    640 x 480 @ 60Hz
    640 x 480 @ 67Hz
    640 x 480 @ 72Hz
    640 x 480 @ 75Hz
    800 x 600 @ 60Hz
    800 x 600 @ 72Hz
    800 x 600 @ 75Hz
    832 x 624 @ 75Hz
    1024 x 768 @ 60Hz
    1024 x 768 @ 70Hz
    1024 x 768 @ 75Hz
    1280 x 1024 @ 75Hz

    Manufacturer Reserved Timings:
    ------------------------------
    1152 x 870 @ 75Hz

    Standard Timing Identification:
    -------------------------------
    #0: 1152 x 864 @ 75Hz (714F)
    #1: 1280 x 720 @ 60Hz (81C0)
    #2: 1280 x 800 @ 60Hz (8100)
    #3: 1280 x 1024 @ 60Hz (8180)
    #4: 1440 x 900 @ 60Hz (9500)
    #5: 1600 x 900 @ 60Hz (A9C0)
    #6: 1680 x 1050 @ 60Hz (B300)

    Monitor Description blocks:
    ---------------------------
    Descriptor #0 - Timing definition:
    Mode = 3840 x 2160 @ 30.000Hz
    Pixel Clock............. 297.00 MHz Non-Interlaced

    Horizontal Vertical
    Active.................. 3840 pixels 2160 lines
    Front Porch............. 176 pixels 8 lines
    Sync Width.............. 88 pixels 10 lines
    Back Porch.............. 296 pixels 72 lines
    Blanking................ 560 pixels 90 lines
    Total................... 4400 pixels 2250 lines
    Scan Rate............... 67.500 kHz 30.000 Hz

    Image Size.............. 1872 mm 1053 mm
    Border.................. 0 pixels 0 lines

    Sync: Digital separate with
    * Positive vertical polarity
    * Positive horizontal polarity

    Descriptor #1 - Timing definition:
    Mode = 1920 x 1080 @ 60.000Hz
    Pixel Clock............. 148.50 MHz Non-Interlaced

    Horizontal Vertical
    Active.................. 1920 pixels 1080 lines
    Front Porch............. 88 pixels 4 lines
    Sync Width.............. 44 pixels 5 lines
    Back Porch.............. 148 pixels 36 lines
    Blanking................ 280 pixels 45 lines
    Total................... 2200 pixels 1125 lines
    Scan Rate............... 67.500 kHz 60.000 Hz

    Image Size.............. 1872 mm 1053 mm
    Border.................. 0 pixels 0 lines

    Sync: Digital separate with
    * Positive vertical polarity
    * Positive horizontal polarity

    Descriptor #2 - Monitor limits:
    Horizontal frequency range.......15-81 kHz
    Vertical frequency range.........24-75 Hz
    Maximum bandwidth range..........300 MHz
    GTF supported

    Descriptor #3 - Monitor name:
    SAMSUNG


    -----------------------------------------------------
    ------------ EXTENSION EDID BLOCK 1 ---------------
    -----------------------------------------------------

    CEA-EXT: CEA 861 Series Extension:
    ----------------------------------
    Revision:...........................3
    First DTD block at offset...........62
    Display Supports:
    Underscan on PC modes
    Basic audio
    YCbCr 4:4:4
    YCbCr 4:2:2

    Data Block Collection #1 - Type 2
    Video Type: standard CEA Timings
    #1: 3840 x 2160p @ 30Hz - 16:9 (95)
    #2: 1920 x 1080p @ 59.94/60Hz - 16:9 - '1080p' (16)
    #3: 1920 x 1080p @ 50Hz - 16:9 - '1080p50' (31)
    #4: 1280 x 720p @ 59.94/60Hz - 16:9 - '720p' (4)
    #5: 1280 x 720p @ 50Hz - 16:9 - '720p50' (19)
    #6: 1920 x 1080i @ 59.94/60Hz - 16:9 - '1080i' (5)
    #7: 1920 x 1080i @ 50Hz - 16:9 - '1080i25' (20)
    #8: 1920 x 1080p @ 23.98/24Hz - 16:9 - '1080p24' (32)
    #9: 1920 x 1080p @ 25Hz - 16:9 - '1080p25' (33)
    #10: 1920 x 1080p @ 29.97/30Hz - 16:9 - '1080p30' (34)
    #11: 3840 x 2160p @ 24Hz - 16:9 (93)
    #12: 3840 x 2160p @ 25Hz - 16:9 (94)
    #13: 4096 x 2160p @ 24Hz - 256:135 (98)
    #14: 4096 x 2160p @ 25Hz - 256:135 (99)
    #15: 4096 x 2160p @ 30Hz - 256:135 (100)
    #16: 720(1440) x 480i @ 59.94/60Hz - 16:9 - '480iH' (7)
    #17: 720(1440) x 576i @ 50Hz - 16:9 - '576iH' (22)
    #18: 720 x 480p @ 59.94/60Hz - 16:9 - '480pH' (3)
    #19: 720 x 576p @ 50Hz - 16:9 - '576pH' (18)

    Data Block Collection #2 - Type 1
    Audio Type Block
    Supported format: Linear Pulse Code Modulation (LPCM), on 2 channels
    Supported freq: 32kHz, 44.1kHz, 48kHz
    Supported sample sizes: 16 bit, 20 bit, 24 bit
    Supported format: AC3, on 6 channels
    Supported freq: 32kHz, 44.1kHz, 48kHz
    Maximum bitrate: 640kHz

    Supported format: DTS, on 6 channels
    Supported freq: 48kHz
    Maximum bitrate: -512kHz


    Data Block Collection #3 - Type 4
    Speaker allocation data block
    Front Left / Front Right
    Front Left High / Front Right High

    Data Block Collection #4 - Type 7
    Video Capability Data Block
    CE scan behaviour: Support both over- and underscan
    IT scan behaviour: Support both over- and underscan
    PT scan behaviour: No Data
    RGB quantization: No Data
    YCbCr quantization: No Data

    Data Block Collection #5 - Type 3
    Vendor specific Identifier
    Found HDMI IEEE Registration Identifier
    CEC physical address........... 1.0.0.0
    Supports AI (ACP, ISRC)........ Yes
    Supports 48bpp color depth..... No
    Supports 36bpp color depth..... Yes
    Supports 30bpp color depth..... Yes
    Supports YCbCr 4:4:4........... Yes
    Supports dual-link DVI......... No
    Maximum TMDS clock............. 300 MHz
    HDMI video capabilities........ Yes
    Base EDID image size is in units of 1cm
    Supports 3D.................... No
    HDMI 1.4a specifics present

    Data Block Collection #6 - Type 7
    Reserved for video-related blocks

    Data Block Collection #7 - Type 7
    Reserved for video-related blocks

    Detailed Timing Blocks - 1 is native
    Detailed Timing Block #1 - Timing definition:
    Mode = 1920 x 540 @ 50.044Hz
    Pixel Clock............. 74.25 MHz Interlaced

    Horizontal Vertical
    Active.................. 1920 pixels 540 lines
    Front Porch............. 528 pixels 2 lines
    Sync Width.............. 44 pixels 5 lines
    Back Porch.............. 148 pixels 15 lines
    Blanking................ 720 pixels 22 lines
    Total................... 2640 pixels 562 lines
    Scan Rate............... 28.125 kHz 50.044 Hz

    Image Size.............. 1872 mm 1053 mm
    Border.................. 0 pixels 0 lines

    Sync: Digital separate with
    * Positive vertical polarity
    * Positive horizontal polarity

    Detailed Timing Block #2 - Timing definition:
    Mode = 1366 x 768 @ 59.790Hz
    Pixel Clock............. 85.50 MHz Non-Interlaced

    Horizontal Vertical
    Active.................. 1366 pixels 768 lines
    Front Porch............. 70 pixels 3 lines
    Sync Width.............. 143 pixels 3 lines
    Back Porch.............. 213 pixels 24 lines
    Blanking................ 426 pixels 30 lines
    Total................... 1792 pixels 798 lines
    Scan Rate............... 47.712 kHz 59.790 Hz

    Image Size.............. 1872 mm 1053 mm
    Border.................. 0 pixels 0 lines

    Sync: Digital separate with
    * Positive vertical polarity
    * Positive horizontal polarity
     
  2. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #2
    Looks like the problem is the TV.
    It will display 1080p, or it will display 2160p (1080p doubled), but won't display the 2560 x 1600 that you want.
    And, your iMac won't do 4K - but you already know that.
    So, that leaves you with the 1080p as the max from your iMac. I don't think there's any way to force your TV to do what you want. Your iMac is capable, but not the TV.
     
  3. sebastianmoney thread starter macrumors newbie

    sebastianmoney

    Joined:
    Dec 24, 2015
    Location:
    Tokyo, Japan
    #3
    Thank you very much for your response. Now that leaves much to desire a new Mac Pro when it comes out...
     

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