Public bug reported:

I am not sure which package is at fault; I chose pm-utils just to prime
the reporting process.

Background:

Ubuntu 12.04 LTS
Dell Precision M4300
NVIDIA Corporation G86M [Quadro FX 360M] (rev a1)

Everything worked fine until an auto-update a few days ago wiped out the
proprietary nvidia code. The system booted first time following the
update in a low-res mode (did not check which). I immediately used the
GUI option to re-enable the proprietary driver and rebooted. It started
without problems and I suspended it after a day of work. The next day,
it did not wake up (or maybe it did, but I had no way of knowing that
because the screen was blank). When I touched the keyboard, it started
flashing caps lock and num lock simultaneously and after a while
rebooted itself. The same happened again today.

I cannot see any relevant error messages in any of the logs I know to
check.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pm-utils 1.4.1-9
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu10
Architecture: amd64
Date: Tue Jun 26 17:13:08 2012
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: pm-utils
UpgradeStatus: Upgraded to precise on 2012-05-05 (51 days ago)

** Affects: ubuntu
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug blank dell m4300 precise precision resum screen 
suspend

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https://bugs.launchpad.net/bugs/1018015

Title:
  Regression: the update including linux-image-3.2.0-26-generic breaks
  suspend on Dell m4300

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