G4 Powerbook 15" and Viewsonic LCD VP201b

Discussion in 'Macintosh Computers' started by cleaner416, Oct 12, 2004.

  1. macrumors newbie

    Joined:
    Mar 8, 2004
    Location:
    New York City
    #1
    Hello,

    I recently purchased a Viewsonic VP201b LCD display. I am using it with my Apple Powerbook G4 15".

    I am connecting the display to the computer with the DVI cable that came with the display. At 1600x1200/60hz/millions of colors the display will jump every few seconds (move about an 1/8 of an inch for a fraction of a second) and will occasionally go black for a second here or there. These symptoms disappear when I change the resolution to 1280x1024/85hz/millions.

    I thought it might be the cable so I purchased a shielded "DVI Single Link TDMS Cable - DVI-D M/M" and tried it out. This time, the VP201b displayed a low resolution image (1280x960, I think) with a greenish tint on everything. Intermittenly the screen will go black and display the message "out of range"

    Am I using the wrong cable? Any suggestions?
    Thanks in advance!
     
  2. thread starter macrumors newbie

    Joined:
    Mar 8, 2004
    Location:
    New York City
    #2
    An update: I bought a new cable and still have the same issue. Is it possible that some odd magnetic field would affect the video card inside the G4?
     
  3. macrumors 68040

    cluthz

    Joined:
    Jun 15, 2004
    Location:
    Norway
    #3
    Have you tried with other refresh rates than 60hz in 1600x1200?
    If it doesn't work you have to contact the daeler..

    (I've getting a viewsonic VP171S this week, hope it doesn't have the same problems..)
     
  4. thread starter macrumors newbie

    Joined:
    Mar 8, 2004
    Location:
    New York City
    #4
    The jitters occur at 1600x1200 60Hz millions and are reduced to half at 1600x1200 60Hz thousands. They only go away at 1280x1024 85 Hz millions and below.

    I tested the monitor with a PC. No problems at all. I also tried using the RGB plug to the Apple supplied RGB->DVI converter and then to the powerbook. The jitters go away but the picture sucks.

    Arg.
     

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