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  1. #1

    Member Since
    Nov 16, 2011
    Power Mac G5 DVI Connection Issues
    When connecting an Optiquest Q22wb Monitor to my Power Mac G5 using a DVI-D cable, there is an intermittent problem where the computer will lock (either sleeping or going to screensaver), and when I wake the computer, I see the usual unlock screen, however when unlocking it I am presented with a black screen.

    If I select "switch user" instead, I see the normal user login window. It seems anytime I try to access my user profile, the screen is black.
    The only solution I have at the moment is to restart my computer.

    This issue does not exist if I use a VGA cable from the monitor, to the adapter for the Power Mac.

    Here are the specs.

    Computer Specs:

    Model Name: Power Mac G5
    Model Identifier: PowerMac7,3
    Processor Name: PowerPC G5 (3.0)
    Processor Speed: 2 GHz
    Number Of CPUs: 2

    ATI Radeon 9600:

    Chipset Model: ATY,RV351
    Type: Display
    Bus: AGP
    Slot: SLOT-1
    VRAM (Total): 128 MB
    Vendor: ATI (0x1002)
    Device ID: 0x4150
    Revision ID: 0x0000
    ROM Revision: 113-A58504-113
    Resolution: 1680 x 1050 @ 60 Hz
    Depth: 32-Bit Color
    Core Image: Hardware Accelerated
    Main Display: Yes
    Mirror: Off
    Online: Yes
    Quartz Extreme: Supported
    Rotation: Supported
    Display Connector:
    Status: No Display Connected

    Any input would be helpful!
    (Please don't tell me to just use a VGA cable...)

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac i5 2.7GHz, 16GB memory, OS 10.11
    Well I wo't tell you that then.......................
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  3. #3

    Member Since
    Sep 13, 2011
    Kentucky, USA
    Mac Pro 2 x 2.66 Xeon 6gb DDR2 1TB OSX Server
    Hmm this is a stumper. Can you try dropping your resolution and test again and see if that has any change? Try this with your DVI connection.
    Blair Technology Group - Mac System Administrator

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