The problem sounds a lot like a concurrency issue, but at least booting with 
SMP disabled did not help the problem in the slightest. Also it does not matter 
whether you suspend with or without X, so I don't think it's the display driver 
either.
As the problem seems to be present in all distros, I would hazard a guess that 
the problem is in the Linux kernel itself, some device driver module. That this 
one guy reports reliable sleeping with a custom kernel would support that guess.

I also tried without help the script for unbinding USB devices on sleep.

For me, I'm changing the slow HD to an SSD, and hope hibernating and
resuming will be much faster then. Of course still not as fast as
sleep/wakeup.

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https://bugs.launchpad.net/bugs/856711

Title:
  11.10 - Suspend fails on Asus 1215B

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