MacBook Pro with an External Display - Won't go Full Res?

Discussion in 'MacBook Pro' started by earth.mark.two, Feb 26, 2010.

  1. earth.mark.two macrumors newbie

    earth.mark.two

    Joined:
    May 23, 2009
    #1
    I have a Unibody MacBook Pro from the Late 2009 line.

    When connected to a TV, it used to be able to make the TV 1920x1080 but for some reason it won't do that anymore. It's not on mirrored, and I can't think of anything I've done to mess this feature up. Some people are saying that MacBooks can only support full res on externals by putting the computer to sleep, but I HAVE done full res before with both screens awake.

    Any ideas on how to fix this would be much appreciated, it's driving me insane!

    UPDATE : I think the port on my MacBook may be slightly damaged. A small wiggle of the cable makes the screen go black. I then have to fiddle with the Display Preferences or replug it. Should I call Apple or something?

    I have a 40" Samsung LCD TV
     
  2. mikeherdes macrumors member

    Joined:
    Jan 29, 2010
    #2
    What type of cable are you using (HDMI, VGA, DVI).
     
  3. chopper dave macrumors regular

    Joined:
    Jul 23, 2007
    #3
    My 1st gen MBP won't get the correct resolution with my TV over DVI->HDMI but works great over VGA. I checked the internet for a while and the general consensus is that it's the TV's fault (Sony 40" 720P LCD).
     
  4. earth.mark.two thread starter macrumors newbie

    earth.mark.two

    Joined:
    May 23, 2009
    #4
    It's a VGA cable. I haven't changed any of the cabling or plugs since I began using it, and it's gone from working perfectly fine at 1920x1080 to just not working at 1920x1080. So it must be something to do with my computer. I just cannot figure out what.
     
  5. shadygrove macrumors regular

    Joined:
    Mar 8, 2010
    #5
    What version of OSX are you running? If you updated from an early version (that worked) to 10.5.8 (that doesn't) this may help. It sure fixed my problems. If I were you though I would go get a display port (or dvi, whatever you have) and convert it to HDMI. The clarity and display will be much better in general. I got the chord and adapter for less $15 if you know where to go and don't buy name brands. Try this software though... I bet it can fix your problem.

    http://www.versiontracker.com/dyn/moreinfo/macosx/15467
     
  6. andyone macrumors member

    Joined:
    Jan 21, 2008
    #6
    I agree, forget VGA. This is the 21st century.
     
  7. Dozerrox macrumors 6502

    Joined:
    Dec 23, 2009
    Location:
    Exeter
    #7
    Have you a/b'd VGA and a digital connection? I struggle to tell the difference. Maybe I haven't tried it on a huge enough screen.
     
  8. andyone macrumors member

    Joined:
    Jan 21, 2008
    #8
    Unless you are using low resolutions or only top quality graphics cards, cables and monitors you can almost always see a difference between VGA and DVI. Look for smeared edges or vertical blurry stripes across the whole screen.
     

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