MacBook Pro External Monitor Flicker

Discussion in 'MacBook Pro' started by justaphone, May 31, 2011.

  1. justaphone macrumors member

    Jun 17, 2007
    I started searching the threads to see if others had the following issue:

    Mid 2009 MBP 2.8 5,3
    Connected to HP Compaq LA2205WG Monitor via MiniDisplayport to Displayport
    High Performance Mode
    Native Monitor 1440x900
    External Monitor 1680x1050

    Intermittent external monitor flicker
    Interval varied from every couple of minutes to several a second

    X Factor - I use an Apple bluetooth keyboard and magic pad when using the external monitor described above

    Also note- The flicker only occurred when connected to the monitor above - use external display on other occasions at different sites with no issue.

    So, I tried to trouble shoot. Checked connections etc. All seemed ok. Noticed that the display was fine as long as I was not actively moving the curser on the display. Thought maybe it was a certain application. Could not find a pattern. Finally shut off bluetooth (read something that made me think this may be a factor?) It seemed to stop flickering. Decided to try and see if a bluetooth setting would change the issue.

    I unchecked discoverable in the advanced bluetooth settings, and have not had the flicker for several hours? I am using the bluetooth mouse and keyboard without any issue now.

    Thought it was interesting, so decided to post.
  2. Repo macrumors 6502a


    Feb 11, 2009
    Test the monitor on a known-working computer. Test a seperate known-working monitor (with the same cables/connections) with the MBP.

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