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[Launchpad Bug Tracker <1294107@xxxxxxxxxxxxxxxxxx>]

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since upgrading from LTS to XU 13.04 & then XU 13.10 the acer laptop is experiencing frequent hard lockups.
one source of lockup has been GL screensaver, so I turned it off.  Still the lockups happen
Power management for AC is also off.
The laptop does not run too hot, and the lid is up

Is there a daemon that can catch the source of the lockups?

I'm installing gnome system log viewer and are there log search terms to
quickly find the trouble?

I've checked the system with chkrootkit but it has a fatal flaw

Checking `aliens'...                                        /bin/egrep:
/dev/.bootchart/proc/sysrq-trigger: Input/output error


the same machine does not lock up under Linux Mint 15 MATE. kernel 3.8.0.xx

Memory is tested often. 2GB
Hard disk has no errors and is tested monthly
System has been put through "crashme"  and CPU intensive operations in order to raise tempurature, system remains stable.

Most likely times of lockups are:
- system left idle on AC and power manager is set to no suspend & GL screensaver activated (will lockup less often with no screensaver activated)
- view webm or flash videos via browser and have more than ~ 800MB RAM usage
- run glxgears full screen with some RAM usage 

resulting hard lockup shows venetian blinds effect on screen.


--- 
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
DistroRelease: Ubuntu 12.04
InstallationMedia: Xubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140205)
MarkForUpload: True
Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.4
PackageArchitecture: i386
ProcEnviron:
 LANGUAGE=en_CA:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
Tags:  precise
Uname: Linux 3.2.0-24-generic i686
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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


** Tags: apport-collected bot-comment precise
-- 
[965gm mesa] XU 13.10 causing frequent laptop (acer 5620) hard lockups.
https://bugs.launchpad.net/bugs/1294107
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