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This is a Core i7 MacBook Pro that was upgraded to Lion from Snow Leopard, retaining the legacy FileVault encryption on the home directory.

I've been getting these strange lockups, three or four times now over the course of two weeks, where some part of the system suddenly breaks, producing the following behavior:

  • Can still make new SSH connections into the machine
  • The display is completely frozen, except that the trackpad still moves the cursor around
  • Nothing happens when I close the lid
  • Music from a Flash app in Safari continues to play

It doesn't appear to be triggered by any specific action from me.

This has never happened to me on my Core i7 MacBook Air at home, which was preloaded with Lion. The only major difference I can think of is the FileVault difference. Could that cause this? What else I should investigate? I can't imagine that a hardware issue would cause such a specific combination of symptoms.

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"About This Mac" says "Early 2011". – lawrence Nov 29 '11 at 22:52
I don't know, but it's still a problem. I haven't experienced this on my 2011 Macbook Pro 13" (yet). – emb1995 Nov 29 '11 at 22:53
You still have two graphics cards. Try restricting it to only use the integrated one for a while and see if the problem persists. – Daniel Beck Nov 29 '11 at 22:54
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Do all crashes occur while you're playing flash video? – Daniel Beck Nov 29 '11 at 23:20
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