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[Bug 986735] [NEW] Lenovo T420s resume after suspend reboot loop


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I am running 12.04 with current packages on a Lenovo T420s. I had
previsouly had suspend / resume working properly with 12.04 (and
previously with 11.10)  until around the 10th of April. Now I am unable
to resume after suspending.

Upon opening the lid or pressing the power button the laptop starts to
boot (caps lock and thinklight flash, power button turns on, hard drive
is heard to start), then turns off completely (all lights off). After
about a second it repeats the process. The screen never turns on /
displays any information. It appears to do this continously until you
hold the power button down for a while or pull the battery. The computer
then boots normally.

I am booting using UEFI and have both a normal hard drive and a intel
mSATA SSD (310 80GB). The boot device is the SSD.

I'm eager to help diagnose and resolve this issue.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pm-utils 1.4.1-9
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
Date: Sat Apr 21 20:34:03 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
PackageArchitecture: all
 PATH=(custom, user)
SourcePackage: pm-utils
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete

** Tags: amd64 apport-bug precise
Lenovo T420s resume after suspend reboot loop
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