8 Replies Latest reply: Dec 3, 2010 9:51 AM by westerneyes
westerneyes Level 1 Level 1 (40 points)
Hello all,

I have the apple dvi-i to s-video adapter connecting mbp 3.1 to an old crt tv. The picture is scrambled and black & white.
With system prefs open and windows gathered the tv shows up as a generic vga monitor and there is no option to pick between NTSC and PAL for that screen. I have reset pram, booted in safe mode but nothing changes.
I have tested this tv with a windows pc running xp (without the adaptor) which allows access to the driver and the changing of the refresh rate and yes it works flawlesslyish!.
This setup has worked for me previously in leopard days. Similar problems seemed to associated with the release of snow leopard and was later resolved by the release of 10.6.3. Alas not so for me (on 10.6.5).
Are there any other remedial steps I could take?

Regards Pat

g5 2*1.8, Mac OS X (10.5.8), mbp 2.4 10.6.5
  • BSteely Level 5 Level 5 (7,635 points)
    Did you buy the adapter in the States or overseas? There are two different part numbers. The one sold in the U.S. doesn't support PAL timings.
  • westerneyes Level 1 Level 1 (40 points)
    Its all PAL (tv and adaptor). Its just that I can't get to choose a refresh rate lower than 60 hz on he system prefs. I've tried it on other tvs/monitors and the same thing.
    Regards Pat
  • BSteely Level 5 Level 5 (7,635 points)
    Are you sure it's the PAL adapter? Because that's exactly what would happen if you have the wrong one.

    You can read the adapter's EDID using SwitchResX (click on the "Export EDID" button) and tell if that's the problem or not.
  • westerneyes Level 1 Level 1 (40 points)
    Thanks for your help
    I agree that this is what I should expect if it were the wrong adaptor.
    It is definitely PAL. it says so on it.
    It worked before with this tv but usually needed a reboot to get proper colors etc.
    Here is what the edid file in switchresx says (no hints that I recognise here)


    DDC block report generated by SwitchResX version 4.1.8 for display
    VGA/SVGA Display


    -----------------------------------------------------
    ------------------- 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 00 00 17 07 00 00 00 00
    1 | 0A 0A 01 01 0C 1E 17 BE E8 2D C9 A0 57 47 98 27
    2 | 12 48 4C 00 00 00 01 01 01 01 01 01 01 01 01 01
    3 | 01 01 01 01 01 01 00 00 00 FE 00 53 52 58 46 61
    4 | 6B 65 45 44 49 44 0A 20 01 01 01 01 01 01 01 01
    5 | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    6 | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    7 | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 00 5A

    -----------------------------------------------------
    < 00FFFFFF FFFFFF00 00001707 00000000 0A0A0101 0C1E17BE E82DC9A0 57479827 12484C00 00000101 01010101 01010101 01010101 01010000 00FE0053 52584661 6B654544 49440A20 01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101 0101005A >

    -----------------------------------------------------
    { 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x17, 0x07, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x0A, 0x01, 0x01, 0x0C, 0x1E, 0x17, 0xBE, 0xE8, 0x2D, 0xC9, 0xA0, 0x57, 0x47, 0x98, 0x27, 0x12, 0x48, 0x4C, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0xFE, 0x00, 0x53, 0x52, 0x58, 0x46, 0x61, 0x6B, 0x65, 0x45, 0x44, 0x49, 0x44, 0x0A, 0x20, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x5A, }

    -----------------------------------------------------
    Valid EDID block: checksum passed

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

    EDID Version........1.1
    Manufacturer........@@@
    Product Code........5895 (1707) (0717)
    Serial Number.......00000000

    Manufactured........Week 10 of year 2000
    Max H Size..........30 cm
    Max V Size..........23 cm
    Gamma...............2.90

    Display Supported Features:
    ---------------------------
    Power Management: Active off Power Management: Suspend Power Management: Standby

    Display type:
    -------------
    RGB color display
    Display is non continuous frequency
    Default color space is not sRGB standard


    Input signal & sync:
    --------------------
    Analog input with: 0.700V / 0.300V
    Separate Sync
    Composite Sync


    Color info:
    -----------
    Red x = 0.625 Green x = 0.280 Blue x = 0.155 White x = 0.283
    Red y = 0.342 Green y = 0.595 Blue y = 0.070 White y = 0.298

    Established Timings:
    --------------------

    Manufacturer Reserved Timings:
    ------------------------------

    Standard Timing Identification:
    -------------------------------

    Monitor Description blocks:
    ---------------------------
    Descriptor #0 - ASCII data:
    SRXFakeEDID

    Descriptor #1 - Empty descriptor

    Descriptor #2 - Empty descriptor

    Descriptor #3 - Empty descriptor
  • BSteely Level 5 Level 5 (7,635 points)
    Hmm. Yeah, I don't see anything there linking that adapter to PAL or NTSC. Below is the EDID from my U.S. version of that adapter. It always comes up in NTSC timing first, but does allow for PAL (50Hz) selections.

    Are you sure yours is an Apple adapter? Usually the name section of the EDID would have APP.





    DDC block generated by SwitchRes X for display
    NTSC/PAL (2)

    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 06 10 08 9D 01 01 01 01
    1 | 07 0C 01 03 10 00 00 96 30 67 A9 A0 56 47 99 26
    2 | 11 48 4C 00 00 61 01 01 01 01 01 01 01 01 01 01
    3 | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    4 | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    5 | 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    6 | 01 01 01 01 01 01 01 01 01 01 01 01 00 00 00 FC
    7 | 00 4E 54 53 43 2F 50 41 4C 0A 20 20 20 20 00 38

    -----------------------------------------------------
    Valid DDC block: checksum passed

    EDID Version........1.3
    Manufacturer........APP
    Product Code........2205 (089D) (9D08)
    Serial Number.......16843009

    Manufactured........Week 7 of year 2002
    Max H Size..........0 cm
    Max V Size..........0 cm
    Gamma...............2.50

    DPMS Supported Features:
    ------------------------
    Active off

    Display type:
    -------------
    Non RGB color display


    Input signal & sync:
    --------------------
    Analog input with: 0.700V / 0.300V
    Blank to black setup


    Color info:
    ------------
    Red x = 0.626 Green x = 0.278 Blue x = 0.150 White x = 0.283
    Red y = 0.338 Green y = 0.601 Blue y = 0.068 White y = 0.298

    Established Timings:
    --------------------

    Manufacturer Reserved Timings:
    ------------------------------
    Unknown timing 7
    Unknown timing 2
    Unknown timing 1

    Standard Timing Identification:
    -------------------------------

    Monitor Description blocks:
    ---------------------------
    Descriptor #0 is Empty descriptor

    Descriptor #1 is Empty descriptor

    Descriptor #2 is Empty descriptor

    Descriptor #3 is Monitor name:
    NTSC/PAL
  • westerneyes Level 1 Level 1 (40 points)
    Hello again, yep I bought it from the online apple store here in Ireland. Where your readout refers to the manufacturer as APP I get @@@. Mine seems to refer to the monitor whereas yours appears to refer to the adapter. Its as if some internal driver/firmware has got fried.
  • BSteely Level 5 Level 5 (7,635 points)
    Yeah, and yours shows no manufacturer's reserved timings. Those timings refer to one's built into EFI. But your adapter doesn't reference them. You might want to take it up with Apple and say you got a defective one. It looks that way to me.
  • westerneyes Level 1 Level 1 (40 points)
    Thank you very much BSteely, maybe a warranty enquiry is in order! Good to be able to see other peoples results remotely. My only other concern is that my nvidia cursed 8600 graphics card might be involved. It has been replaced twice already. It plays well with other monitors using different connectors so maybe not.

    regards Pat