Native Resolution Problem

Kaosports
Kaosports Member Posts: 2 New User
edited October 2023 in 2018 Archives
For the last couple of days, my x223w has decided not to display at the native resolution (1680x1050), and I now have to scroll the desktop left to right to see it all when set at this. (Currently running at 1400 x 1050 so as to fit screen).

Doing a bit of digging on the web, it would seem that for some reason, the DDC/EDID data is not being read by the display driver/Windows. 

Using Powerstrip's Monitor Information option, when I use the ''Read Data From Stored EDID', I get a message saying 'Valid EDID data could not be obtained from Windows or the display driver.

DDC is not supported.'

If I try the 'Read data directly from Monitor' the message says

'DDC communication with the monitor failed or is not supported. Reverting to EDID data provided by Windows or the display driver, if available.'

So at the moment, it's will only read the EDID data from the registry. (DDC/CI is set to on in on the monitor btw.)

Before I did the above, I had tried swapping VGA cables, GFX card outputs, reinstalled the display & GFX drivers (I used the official x223w monitor driver plus Windows default & Plug N' Play ones) and even disconnecting the monitor and starting the PC without it connected, and then reconnected it,  but none of these had any effect, and the problem remains. (I tried the monitor connected to a Win 7 laptop, and it worked fine at the native resolution).

OS is WinXP SP3, GFX card is Powercolour Radeon HD4850, with the latest drivers available from the AMD/ATI website.

I'd be grateful if anyone could find a solution for this, as everything was working fine at the native resolution a couple of days ago, and I'd like to get it sorted.

Answers

  • Spelunker
    Spelunker Member Posts: 43 Devotee WiFi Icon
    There are various possible solutions.

    # Make sure your Windows OS is updated. Also, download the driver for the display which you can find in the Optional updates.

    # Make sure that the EDID box is CHECKED in the AMD Vision Engine control center. [ https://support.amd.com/PublishingImages/Support/GPU-10 Added Images/uncheckededid-1.JPG ]

    # You can go to AMD Catalyst [Vision control panel] and then force a custom resolution. If you are unable to force a customer resolution, try it using the tool at the following link: https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU

    # Or you can navigate to the Monitor properties and uncheck the "Hide modes that this monitor cannot display"
    http://i55.tinypic.com/a0i8vr.png

    By the way, as per AMD, "
    If the required resolution is 2560x1600 pixels (such as running on a 30” display), the following conditions must be met:
    • The monitor and graphics card must be connected with a Dual-Link DVI cable.
    • The graphics card must have a Dual-Link DVI port.

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    Please click 'Yes' if the comment answers your question
  • Kaosports
    Kaosports Member Posts: 2 New User
    Kaosports said:
    For the last couple of days, my x223w has decided not to display at the native resolution (1680x1050), and I now have to scroll the desktop left to right to see it all when set at this. (Currently running at 1400 x 1050 so as to fit screen).

    Doing a bit of digging on the web, it would seem that for some reason, the DDC/EDID data is not being read by the display driver/Windows. 

    Using Powerstrip's Monitor Information option, when I use the ''Read Data From Stored EDID', I get a message saying 'Valid EDID data could not be obtained from Windows or the display driver.

    DDC is not supported.'

    If I try the 'Read data directly from Monitor' the message says

    'DDC communication with the monitor failed or is not supported. Reverting to EDID data provided by Windows or the display driver, if available.'

    So at the moment, it's will only read the EDID data from the registry. (DDC/CI is set to on in on the monitor btw.)

    Before I did the above, I had tried swapping VGA cables, GFX card outputs, reinstalled the display & GFX drivers (I used the official x223w monitor driver plus Windows default & Plug N' Play ones) and even disconnecting the monitor and starting the PC without it connected, and then reconnected it,  but none of these had any effect, and the problem remains. (I tried the monitor connected to a Win 7 laptop, and it worked fine at the native resolution).

    OS is WinXP SP3, GFX card is Powercolour Radeon HD4850, with the latest drivers available from the AMD/ATI website.

    I'd be grateful if anyone could find a solution for this, as everything was working fine at the native resolution a couple of days ago, and I'd like to get it sorted.