Help needed: 8740w + GTX 1070

Discussion in 'HP' started by triturbo, Apr 3, 2018.

  1. ChanceJackson

    ChanceJackson Notebook Evangelist

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    Are you trying to launch NVflash by itself? Iirc you have to launch it with the specific command you want in the proper syntax on the same command line ex. "Nvflash.exe backup oemvbios.bin" (probably the wrong syntax though I hope you get the point) look up an Nvflash guide for the right commands
     
    Last edited: Apr 10, 2018
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  2. triturbo

    triturbo Long live 16:10 and MXM-B

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    Thanks for the input! It worked with the latest version, not directly as you said, had to open the folder and then type "cmd" in the navbar and then the command "nvflash64 -6 xxxx.rom".

    Anyway, new problems now: There's picture while booting, in Safe Mode and with disabled driver. With the driver installed, once it gets to actually load it in Windows the screen goes off and no external can be switched. Tried the msi vBIOS from your topic, the GeCube one and this one. So far only the stock ZOTAC works properly, but only on external. The display is an oddball - 10bit IPS RGBLED eDP (more like internally wired DP) with ColorBoard/converter to LVDS, but then why I can't switch to external?

    @t456 @j95 @Mobius 1 - Hope you guys can chime in.
     
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  3. t456

    t456 1977-09-05, 12:56:00 UTC Moderator

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    Yes, the only reason it's running at all is that ColorBoard; system turns out eDP and the board converts it to the screen's LVDS. A theory; the panel still identifies itself as being LVDS (which is true), but the Pascal driver thinks 'Hey! An LVDS; I can't drive that with eDP!' and promptly turns off the signal altogether.

    Could try hot-plugging the cable between the decoder board and the lcd once the system has booted. Just be very, very careful and make dead-sure to insert it straight, not one side before the other. Might do a few attempts with the power off first; would be a shame to brick a DC.
     
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  4. triturbo

    triturbo Long live 16:10 and MXM-B

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    Makes sense. Is there a workaround though? Sorry, but I won't dare to try the hot-plug. This way I've burned a GPU and a display in the past. I won't say that the 1070 would be easily sacrificed, but the DC is too much at stake. So yeah, I hope that there's more elegant solution.
     
  5. ChanceJackson

    ChanceJackson Notebook Evangelist

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    shouldn't the adapter make the computer see it as eDP?

    Correction: I meant eDP
     
    Last edited: Apr 11, 2018
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  6. ChanceJackson

    ChanceJackson Notebook Evangelist

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    I think the nVidia driver doesn't know how to handle your laptop, those kind of specifics are handled by the section ID you used

    download the latest nvidia driver HP has for your machine and explore the nvbli.inf for all references to your machine 1520 chances are all official video card configuration use the same Section ID # investigate that section ID and make sure the installer options in the Section ID you use in your modified INF mirrors what was in the official inf.
     
    Last edited: Apr 11, 2018
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  7. triturbo

    triturbo Long live 16:10 and MXM-B

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    Yes and no. First it is not exactly eDP, since it is missing a couple of eDP specific pins. That's why I said that it's more like internally wired DP. Second - I really don't know how HP made it to be recognized. Maybe they've used DP, since the LVDS would've been too thick and too much paths to be wired on the motherboard? Also I'm not sure if the MXM's LVDS can support 10bit at all. I think that it can't - 8bit max. Needs another data pair and it is not designed for it. This seems more like it. The question still remains how it is recognized?

    I've tried quite a few section IDs and all the same. The last was ZBook 17 G2's K5100m (Section004). Excluding the GPU, the display is the same configuration - 10bit IPS RGBLED eDP (more like internally wired DP) with ColorBoard/converter to LVDS. I'm at loss. Could try 8770w's K5000, but I don't hold my breath to be honest.
     
  8. t456

    t456 1977-09-05, 12:56:00 UTC Moderator

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    The panel's edid will inform the system as to its interface type. You can check this with MonInfo. Could you copy/paste the 'raw data' bit too, while you're there?
     
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  9. ChanceJackson

    ChanceJackson Notebook Evangelist

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    except the g2 zbook is a strictly optimus compatible eDP system I wouldn't bother using the section ID of a different already configured laptop go back to the official driver and copy the specifics of that section ID over to your modified inf
     
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  10. triturbo

    triturbo Long live 16:10 and MXM-B

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    Here you are:

    Monitor
    Windows description...... Generic PnP Monitor
    Manufacturer............. LG Display
    Plug and Play ID......... LGD0270
    Serial number............ n/a
    Manufacture date......... 2009, ISO week 0
    Filter driver............ None
    -------------------------
    EDID revision............ 1.4
    Input signal type........ Digital
    Color bit depth.......... 10 bits per primary color
    Color encoding formats... RGB 4:4:4, YCrCb 4:4:4
    Screen size.............. 370 x 230 mm (17,2 in)
    Power management......... Not supported
    Extension blocs.......... None
    -------------------------
    DDC/CI................... n/a

    Color characteristics
    Default color space...... Non-sRGB
    Display gamma............ 2,20
    Red chromaticity......... Rx 0,686 - Ry 0,308
    Green chromaticity....... Gx 0,206 - Gy 0,715
    Blue chromaticity........ Bx 0,145 - By 0,045
    White point (default).... Wx 0,313 - Wy 0,329
    Additional descriptors... None

    Timing characteristics
    Range limits............. Not available
    GTF standard............. Not supported
    Additional descriptors... None
    Preferred timing......... Yes
    Native/preferred timing.. 1920x1200p at 60Hz
    Modeline............... "1920x1200" 154,000 1920 1968 2000 2080 1200 1203 1209 1235 -hsync -vsync
    Detailed timing #1....... 1920x1200p at 48Hz
    Modeline............... "1920x1200" 123,200 1920 1968 2000 2080 1200 1203 1209 1235 -hsync -vsync
    Detailed timing #2....... 1920x1200p at 50Hz
    Modeline............... "1920x1200" 128,330 1920 1968 2000 2080 1200 1203 1209 1235 -hsync -vsync

    Standard timings supported

    Report information
    Date generated........... 14.4.2018
    Software revision........ 2.90.0.1020
    Data source.............. Registry
    Operating system......... 6.1.7601.2.Service Pack 1

    Raw data
    00,FF,FF,FF,FF,FF,FF,00,30,E4,70,02,00,00,00,00,00,13,01,04,B0,25,17,78,0A,BC,25,AF,4E,34,B7,25,
    0B,50,54,00,00,00,01,01,01,01,01,01,01,01,01,01,01,01,01,01,01,01,28,3C,80,A0,70,B0,23,40,30,20,
    36,00,6F,E8,10,00,00,19,20,30,80,A0,70,B0,23,40,30,20,36,00,6F,E8,10,00,00,19,A0,10,93,54,00,F8,
    00,50,00,23,00,23,01,01,00,00,00,00,21,32,80,A0,70,B0,23,40,30,20,36,00,6F,E8,10,00,00,19,00,24

    Optimus is disabled with DreamColor configurations.
     
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