Powerbook External VGA CTR MONITOR PROBLEM

Discussion in 'Macintosh Computers' started by fortgreen1, Jan 25, 2005.

  1. macrumors newbie

    Joined:
    Jan 22, 2004
    Location:
    fortgreen brooklyn ny
    #1
    hi,
    I use 1.5ghz Aluminum Powerbook.

    My LCD is totally fine. this happens to external monitors I plug in to my Powerbook. I tried several different healthy monitors.

    situatinon: it's kind of hard to explain.
    The edges of every vertical line has this thin green+red glow(?) as if you applied to much Sharpen Edges effect in Photoshop. first it was ok, but now it's started to really annoy me. itc clearly harder to read text in the external monitor than it is in the LCD.

    does anyone have same problems? is there any solution for this before I go to Apple? I am thinking if I need to fix this it would take them a long time and not going to be fixed even after it get's fixed.

    I tied on various resolutions and refresh rates, and did not make the problem go away.

    is this a video card problem or mother borad?

    I am using VGA CTR monitors.

    thanks.
     
  2. macrumors G5

    Sun Baked

    Joined:
    May 19, 2002
    #2
    And this happens at a variety of resolutions and refresh rates?
     
  3. thread starter macrumors newbie

    Joined:
    Jan 22, 2004
    Location:
    fortgreen brooklyn ny
    #3
    yes. I did all that. I am wondering if it is a video card problem or mother board problem. I also tried different VGA/DVI adaptor. did not work also.

    may be external monitor needs to be DVI monitor? i haven't try that yet.
     
  4. Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #4
    Simple. You have sub-pixel anti-aliasing turned on. Got to system preferences and change the font-smoothing options.

    Sub-pixel anti-aliasing only works on LCDs as the individual red/blue/green pixels are aranged in a predictable vertical patern. So the system uses this to effectivly tripple the horizontal resolution.
     
  5. thread starter macrumors newbie

    Joined:
    Jan 22, 2004
    Location:
    fortgreen brooklyn ny
    #5
    thanks rubbieduncan

    that changed the text but still see the same "photoshop-unsharpen-mask" like effect on everything. it's also almost like the Ghost effects with TV broadcast.( just a bit)
     
  6. macrumors 68040

    plinden

    Joined:
    Apr 8, 2004
    #6
    Do you have any friends with a computer that you know displays correctly on another monitor? If so the easiest thing is to switch monitors and computers and see what happens.
     

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