My system is up to date but I can report now that it is fixed for me
with graphics drivers from xorg-edgers ppa (inluding kernel
3.7.0-4-generic 32 bit). But not in the present packages quoted above.

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https://bugs.launchpad.net/bugs/966744

Title:
  [i965] Resume from suspend leaves me with black screen or a screen of
  the desktop before it suspended. Compiz hung in
  intel_update_renderbuffers() from intel_prepare_render() from
  brw_draw_prims()

Status in Compiz:
  Invalid
Status in The Linux Kernel:
  Fix Released
Status in X.org xf86-video-intel:
  Fix Released
Status in “xserver-xorg-video-intel” package in Ubuntu:
  Fix Released
Status in “xserver-xorg-video-intel” source package in Precise:
  Fix Released
Status in “xserver-xorg-video-intel” source package in Quantal:
  Fix Released

Bug description:
  [Impact]:

  severe, compiz hangs frequently after resuming from suspend or the
  screensaver

  [Testcase]:

  - grab xserver-xorg-video-intel from quantal
  - build it from the extracted directory
  - after the build run 'cd test && make dri2-swap'
  - log in X
  - start two terminals
  - get dpms.sh from this bug, run it in the other terminal
  - on the other run ./dri2-swap

  compiz should hang during the first couple of runs of dri2-swap

  with the fixed package, it doesn't

  [Regression potential]

  To ease the backporting, I did replace patch 101 with the commit that
  was pulled upstream. This patch is needed for smooth transition from
  plymouth to X. There _could_ be some issues with it (meaning
  additional patches needed from upstream), but it seems to be working
  just fine for me.

  The precise upload has another upstream fix for an issue referenced in
  bug 992391, it should be safe.

  ---

  This bug is about problems after resume, with Intel video hardware and
  i965_dri.so.  If you're having these symptoms with other hardware,
  Nvidia or ATI/Radeon, this isn't the place for reports or questions.

  [Those comments are building up, so brief links to direct other people
  to appropriate bugs might be good here, if anyone has them.  Thanks.]

  
----------------------------------------------------------------------------------------

  This happens intermittently. Sometimes upon resume, all I see is a
  black screen and the cursor. the mouse and keyboard respond (the mouse
  moves) but nothing changes.  Switching to console and back doesn't fix
  it. Killing Compiz also does not fix the issue. Further, if one has
  password lock disabled on resume the user will be stuck with a frozen
  display of whatever was last shown on the screen before suspend. The
  mouse cursor still changes as you hover over various elements but the
  display is frozen solid. One can switch to another TTY via ctrl+alt+F1
  but killing the X session is the only way to get back to the desktop.

  Attempts to replace compiz have been fruitless. Trying the 3.4 kernel
  also did not fix the issue.

  BTW, I haven nothing connected to the laptop when I resume and before
  suspend.  This is a very annoying issue because the only way to
  recover is to reboot, which means all the open files will be lost.

  [UPDATE]
  It was discovered that switching to a tty, killing compiz, then invoking 
'metacity --replace' would successfully switch over to metacity. Attempting to 
invoke 'compiz --replace' afterwards would put the state right back where it 
was (frozen screen, etc.) and output error messages saying something similar to 
"invalid configuration, this should never happen, you should probably raise a 
bug report about it". After killing Compiz again and invoking compiz --replace 
yet again I can get basic window management back (though unity --replace still 
does not work as it whines about unclean exit states). So one still needs to 
start over again to get it all functioning properly.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: unity 5.8.0-0ubuntu2
  ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12
  Uname: Linux 3.2.0-20-generic x86_64
  .tmp.unity.support.test.0:

  ApportVersion: 1.95-0ubuntu1
  Architecture: amd64
  CompizPlugins: 
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  CompositorRunning: compiz
  Date: Tue Mar 27 21:47:25 2012
  DistUpgraded: Fresh install
  DistroCodename: precise
  DistroVariant: ubuntu
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 
(20120124)
  MachineType: LENOVO 32492HU
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic 
root=UUID=8afc43b9-4675-46b0-8bf8-49bfd422c2c7 ro quiet splash 
i915.i915_enable_rc6=1 vt.handoff=7
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/29/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6QET67WW (1.37 )
  dmi.board.name: 32492HU
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: 
dmi:bvnLENOVO:bvr6QET67WW(1.37):bd06/29/2011:svnLENOVO:pn32492HU:pvrThinkPadX201:rvnLENOVO:rn32492HU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 32492HU
  dmi.product.version: ThinkPad X201
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.7.2-0ubuntu4
  version.ia32-libs: ia32-libs 20090808ubuntu35
  version.libdrm2: libdrm2 2.4.32-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 
1:6.14.99~git20111219.aacbd629-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20111201+b5534a1-1build2

  X-HWE-Bug: Bug #1004771

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