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<blockquote data-quote="MrTutt" data-source="post: 1604778" data-attributes="member: 163754">I have a mid-2010 MBP with 8 GBs of RAM. It runs the most recent version of Mavericks and all software is up to date. I primarily use it as a desk top with a Viewsonic 22&quot; display connected by a DVI to mini display port. Been using this set up for three years with no problems. Recently I had problems getting the display to come back when the computer had gone to sleep and I woke it up. The problem seem to resolve itself after a while, but now has returned, and I can't get the computer to recognize the display. Here is what happens:I boot the computer; when it comes up, I connect the display and turn it on, and the on light on the monitor starts to blink, but does not display the desk top. On the computer, the display starts to blink on and off. Closing the lid to allow clamshell operation still produces no image on the monitor. If I turn off monitor, the blinking on the mac display stops and things work as they should. I have connected&nbsp; and reconnected everything; run the fix disk permissions program, but the problem persists, and done some research on the Web and a couple of Mac forums to no avail.&nbsp; Any suggestions?</blockquote>

[QUOTE="MrTutt, post: 1604778, member: 163754"] I have a mid-2010 MBP with 8 GBs of RAM. It runs the most recent version of Mavericks and all software is up to date. I primarily use it as a desk top with a Viewsonic 22" display connected by a DVI to mini display port. Been using this set up for three years with no problems. Recently I had problems getting the display to come back when the computer had gone to sleep and I woke it up. The problem seem to resolve itself after a while, but now has returned, and I can't get the computer to recognize the display. Here is what happens:I boot the computer; when it comes up, I connect the display and turn it on, and the on light on the monitor starts to blink, but does not display the desk top. On the computer, the display starts to blink on and off. Closing the lid to allow clamshell operation still produces no image on the monitor. If I turn off monitor, the blinking on the mac display stops and things work as they should. I have connected and reconnected everything; run the fix disk permissions program, but the problem persists, and done some research on the Web and a couple of Mac forums to no avail. Any suggestions? [/QUOTE]

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