Currently Being ModeratedJan 15, 2012 8:55 AM (in response to emilianbkw)
The issue you're having is the result of a hardware failure, that's why clean installs of the OS, etc. do not resolve the issue. The fix is to replace the logic board. Once that is done, your Mac should work fine with an external display.
Currently Being ModeratedJan 16, 2012 9:19 PM (in response to ChangLiu)
Yeah, turns out that after my clean install of Lion, things only worked well for about a week. Took my MacBook Pro to the Genius Bar, along with my monitor, and was able to replicate the issue at the bar. They ran a hardware test, and discovered that my graphics card was on the fritz. It's the integrated NVIDIA 320, so that required a logic board replacement. Got it back, and everything seems right as rain. Running strong for several days now.
Currently Being ModeratedJan 16, 2012 9:59 PM (in response to 41DMBfan)
i am out of warranty so i will definetly purchase a new computer rather than change the logic board...the thing is that i don't know anymore if it will be a Mac..
Currently Being ModeratedJan 16, 2012 10:20 PM (in response to 41DMBfan)
what if i replace the logic board and Nvidia will crash again when i will install next update? If it will be in warranty...it will go to be serviced (eventually will stay more there than in my posession), if it will not have warranty , i losed the money...I preffer something that does not broken when installing updates , or turn wifi on/off , or connect a display....Will i buy my next MacBook Pro just because is a beautiful piece of alluminium furniture ? I already have one...
Currently Being ModeratedJan 16, 2012 10:29 PM (in response to mikefromedmonds)
for the sake of the cause....2 minutes ago :
i shut down computer
connect the display
external display work
no freeze until now
i would say that is more an resources management issue than a hardware one. The display doesn't work if connected when the computer is on...just after restart...weard
Currently Being ModeratedApr 3, 2012 4:20 AM (in response to ChangLiu)
I think I have solved this issue, it seems to do with the Integrated/Discrete graphics modes... See my post: https://discussions.apple.com/message/18028302#18028302
Currently Being ModeratedJul 23, 2012 11:49 AM (in response to emilianbkw)
I use slight adoption of your method:
with the monitor connected:
shut down computer
start up computer with a closed lid
put computer to sleep
wake computer up
voila, dual screen action with no freezes
Currently Being ModeratedSep 22, 2012 1:53 PM (in response to ChangLiu)
i have a question...
when i first started plugging in an external monitor to my macbook pro it worked fine ( i would mirror the screen or use the external as an extension)
but after a month or so it started freezing when i used it as a extension of my display. however, it doesn't freeze when i set the display settings to mirror