Can't get my Acer X223W (DVI+HDMI with Apple's adapter) widescreen monitor to show anything.

Discussion in 'Windows Vista Help' started by Ant, Apr 3, 2013.

  1. Ant

    Ant Guest

    Hello.

    I have a 3.5 years old Acer AM3800 desktop PC with 4 GB of RAM, an
    onboard Intel G45/G43 Express chipset, etc. I have two big 20"+ LCD
    monitors connected to this PC: Philip Brilliance 200P's VGA and
    widescreen Acer X223W's Apple HDMI+DVI) connected. I cannot seem to get
    the widescreen Acer X223W's Apple HDMI+DVI) monitor to show anything (no
    video signal). I even disconnected its VGA cable, and still nothing!

    I can see text modes (BIOS, boot from which drive, Windows' F8, Windows'
    text boot loader, etc.) and Windows' graphical loaders, but nothing for
    Window' login screen and desktops. Also, Windows PE do show up fine.
    Safe mode's login and desktop do not show anything.

    Am I missing something? Windows' Device Manager and display settings
    doesn't seem to detect the widescreen monitor when I have both monitors
    connected. I tried this widescreen monitor on Mac Mini (same adapter and
    cables) and it was fine.

    I tried both my original 64-bit Acer OEM Vista HPE SP2 (IE7), clean
    Window 7 HPE SP1 clean upgrade, and new 64-bit W8 Pro. What's up? All
    OSes were updated from Windows Updates.

    Thank you in advance. :)
    --
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    Ant, Apr 3, 2013
    #1
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  2. Ant

    Ant Guest

    I also tried a bootable KNOPPIX v6.0.4 CD, and it had no problems in its
    desktop. Something is weird in Windows. :/


    --
    Quote of the Week: "All good work is done the way ants do things: Little by little." --Lafcadio Hearn
    /\___/\ Ant(Dude) @ http://antfarm.home.dhs.org (Personal Web Site)
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    Ant, Apr 3, 2013
    #2
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  3. Ant

    Paul Guest

    Resolution set too high ?

    On my monitor, if that happened I'd see "Out Of Range" on the OSD.

    Another possibility, is the monitor has memorized an X,Y offset for
    a particular resolution, that pushes the image all the way off the screen.
    Your OSD has size and offset adjustments, and you'd hope they were not
    capable of applying an offset so large, as to push the image completely
    off the screen.

    With whatever working hardware configuration you can put together, you
    could dump the EDID and see if there is anything particularly weird
    about the data. (EDID is used for Plug and Play info.) Some monitors,
    apparently, don't write protect the EDID, so it's possible to overwrite
    the contents of the EDID. I don't know if Windows has any way of logging
    issues with that or not (EDID no longer makes sense).

    When you say "both monitors connected", are you saying it works if you
    test the monitors individually ? Or, that you have a monitor that
    never works (except in low resolution situations, like the BIOS) ?

    In Windows, you can use this to examine the EDID. I presume Linux
    can do it as well, but I've never investigated the details. (Xrandr and
    friends, are convenience tools for setting display properties, but I don't
    know if something in that area, can dump an EDID in a reasonable way.)

    http://www.entechtaiwan.com/util/moninfo.shtm

    Wikipedia says there is a "read-edid" tool in Linux.

    http://en.wikipedia.org/wiki/Extended_display_identification_data

    http://www.polypux.org/projects/read-edid/

    The current resolution choice in Windows, is likely stored in the
    Registry, but don't ask me how to find it. And removing a video
    driver and reinstalling it again, doesn't clean out the registry.
    So that won't work to improve matters either.

    If you install an "lcd monitor driver", the most active thing that
    does, is set the "maximum resolution" via a registry key. But not
    all manufacturers of LCD screens, provide such a driver for download,
    so you can't count on them. For example, Westinghouse brand LCD monitors,
    never come with LCD monitor drivers. NEC monitors do. (Mine did.) My driver
    was only 6KB in size, so they're not exactly drivers as such, rather
    just adding an entry to the Registry, and providing color calibration
    for things like Photoshop. At least one company, when you look for
    their driver, they have a huge download with every monitor driver
    stored in a single file. A monitor driver isn't strictly necessary,
    but it's another variable to play with, when your setup isn't working
    right.

    Paul
     
    Paul, Apr 3, 2013
    #3
  4. Ant

    Ant Guest

    I tried the lowest resolutions, but they didn't help.

    It didn't matter if both were connected or only HDMI. VGA monitor always
    work.

    Anyways, I think I got it working. I needed to use Acer's updated video
    driver from its web site. Using Intel's driver from intel.com and
    original OEM driver did not fix the issue. Weird.
    --
    "I'm not afraid of insects taking over the world, and you know why? It
    would take about a million ants just to aim a gun at me, let alone fire
    it. And you know what I'm doing while they're aiming it at me? I just
    sort of slip off to the side, and then suddenly run up and kick the gun
    out of their hands." --Jack Handy from Saturday Night Live
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    Ant is currently not listening to any songs on this computer.
     
    Ant, Apr 4, 2013
    #4
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