Intel video is GM965/GL960

these have been now installed

xserver-xorg-core-dbg
libgl1-mesa-dri-dbg
xserver-xorg-video-intel-dbg

intel-gpu-tools  package

intel_audio_dump
intel_backlight
intel_bios_dumper
intel_bios_reader
intel_disable_clock_gating
intel_dpio_read
intel_dpio_write
intel_error_decode
intel_forcewaked
intel_gpu_abrt
intel_gpu_time
intel_gpu_top
intel_gtt
intel_l3_parity
intel_reg_checker
intel_reg_dumper
intel_reg_read
intel_reg_snapshot
intel_reg_write
intel_sprite_on
intel_stepping
intel_upload_blit_large
intel_upload_blit_large_gtt
intel_upload_blit_large_map
intel_upload_blit_small

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1294107

Title:
  XU 13.10 causing frequent laptop (acer 5620) hard lockups.

Status in “xserver-xorg-video-intel” package in Ubuntu:
  New

Bug description:
  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.

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