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[Christopher Townsend <christopher.townsend@xxxxxxxxxxxxx>]

This is also due to a bad bug in Mesa 9.2.  See
https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1222602 for details.
There is a workaround in that bug here:
https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1222602/comments/6

Please try that workaround and see if it helps.

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https://bugs.launchpad.net/bugs/1225389

Title:
  Unity Blur is slow in low powered machines

Status in Unity:
  Triaged
Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  The problem is related to blur, when it is active the system hangs for a few minutes every time you open the dash or transparent elements, such as new dialogs (shutdown, hibernate, suspend etc..), It also happens to other users with this type of netbook and problems also in Raring which were then resolved. Sorry for my english, but I hope it is understood.
  Netbook
  eeepc-aspire-2920
      description: Notebook
      product: 1011PX (1011PX)
      vendor: ASUSTeK Computer INC.
      version: x.x
      serial: BCOAAS027475
      width: 64 bits
      capabilities: smbios-2.6 dmi-2.6 vsyscall32
      configuration: boot=normal chassis=notebook family=Eee PC sku=1011PX uuid=80C17120-33CC-5C81-31B1-5404A64E6725
    *-core
         description: Motherboard
         product: 1015PE
         vendor: ASUSTeK Computer INC.
         physical id: 0
         version: x.xx
         serial: EeePC-0123456789
         slot: To Be Filled By O.E.M.
       *-firmware
            description: BIOS
            vendor: American Megatrends Inc.
            physical id: 0
            version: 1401
            date: 08/30/2011
            size: 64KiB
            capacity: 960KiB
            capabilities: isa pci pnp apm upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification
       *-cpu
            description: CPU
            product: Intel(R) Atom(TM) CPU N570   @ 1.66GHz
            vendor: Intel Corp.
            physical id: 4
            bus info: cpu@0
            version: Intel(R) Atom(TM) CPU N570   @ 1.66GHz
            serial: To Be Filled By O.E.M.
            slot: CPU 1
            size: 1GHz
            capacity: 1GHz
            width: 64 bits
            clock: 167MHz
            capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dtherm tpr_shadow vnmi flexpriority cpufreq
            configuration: cores=2 enabledcores=2 threads=4
          *-cache:0
               description: L1 cache
               physical id: 5
               slot: L1-Cache
               size: 48KiB
               capacity: 48KiB
               capabilities: internal write-back data
          *-cache:1
               description: L2 cache
               physical id: 6
               slot: L2-Cache
               size: 1MiB
               capacity: 1MiB
               capabilities: internal write-back unified
       *-memory
            description: System Memory
            physical id: 15
            slot: System board or motherboard
            size: 2GiB
          *-bank:0
               description: DIMM Synchronous 667 MHz (1,5 ns)
               product: ModulePartNumber00
               vendor: Manufacturer00
               physical id: 0
               serial: SerNum00
               slot: DIMM0
               size: 2GiB
               width: 64 bits
               clock: 667MHz (1.5ns)
          *-bank:1
               description: DIMM [empty]
               product: ModulePartNumber01
               vendor: Manufacturer01
               physical id: 1
               serial: SerNum01
               slot: DIMM1
       *-pci
            description: Host bridge
            product: Atom Processor D4xx/D5xx/N4xx/N5xx DMI Bridge
            vendor: Intel Corporation
            physical id: 100
            bus info: pci@0000:00:00.0
            version: 02
            width: 32 bits
            clock: 33MHz
            configuration: driver=agpgart-intel
            resources: irq:0
          *-display:0
               description: VGA compatible controller
               product: Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller
               vendor: Intel Corporation
               physical id: 2
               bus info: pci@0000:00:02.0
               version: 02
               width: 32 bits
               clock: 33MHz
               capabilities: msi pm vga_controller bus_master cap_li

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: unity 7.1.0+13.10.20130903.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0
  Uname: Linux 3.11.0-7-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.12.1-0ubuntu4
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  Date: Sat Sep 14 14:35:49 2013
  DistUpgraded: Fresh install
  DistroCodename: saucy
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller [8086:a011] (rev 02) (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Device [1043:83ac]
     Subsystem: ASUSTeK Computer Inc. Device [1043:83ac]
  InstallationDate: Installed on 2013-09-12 (2 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130910)
  MachineType: ASUSTeK Computer INC. 1011PX
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-7-generic root=UUID=0c2bdc79-dada-475c-a3c0-f2ede3a917ac ro quiet splash vt.handoff=7
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/30/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1401
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: 1015PE
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: x.xx
  dmi.chassis.asset.tag: 0x00000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer INC.
  dmi.chassis.version: x.x
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1401:bd08/30/2011:svnASUSTeKComputerINC.:pn1011PX:pvrx.x:rvnASUSTeKComputerINC.:rn1015PE:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
  dmi.product.name: 1011PX
  dmi.product.version: x.x
  dmi.sys.vendor: ASUSTeK Computer INC.
  version.compiz: compiz 1:0.9.10+13.10.20130828.2-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.46-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu6
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
  xserver.bootTime: Sat Sep 14 01:15:40 2013
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs: Output                                                  XMIR-1
  xserver.version: 2:1.14.2.901-2ubuntu4
  xserver.video_driver: intel

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