For some reason not much system information has been uploaded... my
graphics hardware is an inbuilt ATI Radeon HD 4200.

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https://bugs.launchpad.net/bugs/1069694

Title:
  Freezes and scrambled screen when switching to TTY

Status in “xorg” package in Ubuntu:
  New

Bug description:
  Apport thinks this is a GPU hang. It's definitely only happened since
  I updated to Quantal.

  Nothing responds after this happens, I can't switch to other TTYs or
  back to Unity. Only REISUB does anything.

  It's also happened a couple of times upon ejecting a USB drive,
  although in that case I can still move the mouse.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: xorg 1:7.7+1ubuntu4
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.6.1-0ubuntu3
  Architecture: amd64
  Date: Mon Oct 22 09:47:11 2012
  DistroCodename: quantal
  DistroVariant: ubuntu
  GpuHangFrequency: Several times a day
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: Upgraded to quantal on 2012-10-20 (1 days ago)

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