Public bug reported:
# Issue
* System lock-ups are experienced after upgrading to linux-
image-2.6.32-32-generic-pae from linux-image-2.6.32-31-generic-pae
* Issue only affects PAE kernel when running with non-pae kernel the
issue is not seen
## Environment
Ubuntu 10.04.2 LTS x86
On Lenovo models:
W510
T410
T500
X201
* All systems have 4gb of ram
* All systems use the PAE kernel
## Resolution
* (workaround) Revert to linux-image-2.6.32-31-generic-pae
* (workaround) Revert to linux-image-2.6.32-32-generic
## Diagnostic Steps
* Lockups happen at random, system is non-responsive to network pings and no
console logs are displayed
* Can be triggered by applications that probe the network and hardware (asset
collection)
## Other information
* If freeze does not occur directly, one CPU core goes up to 100% and/or
memory consuption increases linearly until memory is depleated
* Additional tests carried out on the T410 (PASS/FAIL indicate if system
crashes are experienced during testing):
2.6.38-10-PAE (linux-image-generic-pae-lts-backport-natty from lucid-proposed):
PASS
2.6.35-30-PAE (linux-image-generic-pae-lts-backport-maverick): FAIL
2.6.32-33-PAE (lucid-proposed): FAIL
2.6.32-33 (lucid-proposed): PASS
2.6.32-32-PAE: FAIL
2.6.32-32: PASS
2.6.32-31-PAE: PASS
2.6.32-31: PASS
* T410 VGA Controller:
00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor
Integrated Graphics Controller [8086:0046] (rev 02)
Kernel driver in use: i915
Kernel modules: i915
ii linux-image-2.6.32-31-generic 2.6.32-31.61
Linux kernel image for version 2.6.32 on x86/x86_64
ii linux-image-2.6.32-31-generic-pae 2.6.32-31.61
Linux kernel image for version 2.6.32 on x86
ii linux-image-2.6.32-32-generic 2.6.32-32.62
Linux kernel image for version 2.6.32 on x86/x86_64
ii linux-image-2.6.32-32-generic-pae 2.6.32-32.62
Linux kernel image for version 2.6.32 on x86
ii linux-image-2.6.32-33-generic 2.6.32-33.69
Linux kernel image for version 2.6.32 on x86/x86_64
ii linux-image-2.6.32-33-generic-pae 2.6.32-33.69
Linux kernel image for version 2.6.32 on x86
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: kernel-bug pse
** Tags added: kernel-bug pse
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https://bugs.launchpad.net/bugs/805209
Title:
System locks up after upgrading to linux-image-2.6.32-32-generic-pae
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