Working through the DebuggingKernelSuspendHibernate sequence:

Is this really a failure?  Yes: machine was connected to AC power all
the way through hibernate and resume.  There is no reason to suspect a
machine problem.

Is this a repetition of a previous failure?  Not that I know of.

Did the machine break while going to sleep or waking up?  While waking
up.  The machine happily boots, displays a blank screen with glowing
white Ubuntu logo, then blanks and nothing happens.

Is it reproducible?  Yes, though I think I can remember once when it
resumed fine, yet the problem occurs more than half (probably > 80%) of
the time.

Did it work before?  Hibernate/resume worked in Ubuntu 9.04 Jaunty.  It
failed after I upgraded to Karmic.

Do you end up with flashing caps-lock or similar?  I have not noticed,
but I haven't looked for it.  I will look for it next time.

** Attachment added: "dmesg following reboot after resume problem"
   http://launchpadlibrarian.net/35338753/dmesg.txt

-- 
hibernate/resume failure [non-free: nvidia]
https://bugs.launchpad.net/bugs/378683
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