In my opinion, the problem was in bumblebee 3.0. Without this and with disabled 
NVIDIA card in BIOS, I could boot and boot times were varying from fast to slow 
but I always boot. With bumblebee 3.0 I was unable to boot in most cases.
With bumblebee 3.1 with primus support enabled it seems OK but it needs 
aditional testing.
Ubuntu 12.10 64bit
Lenovo Z580

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https://bugs.launchpad.net/bugs/1093217

Title:
  Ubuntu 12.04 10-20min boot delay (From 3.2.0.29->3.2.0.30) [Lenovo
  IdeaPad Z580]

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