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.
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...
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
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