Public bug reported:

Binary package hint: compiz

Expected:
Smooth full-screen zooming

Actual:
Slow, jerky, unresponsive scrolling when zoom is applied

Reproduce:
Running Ubnutu desktop with unity, open firefox and try zooming and reading the 
page smoothly. The effect can be seen when tooltips are displayed on the 
screen. For example passing over the unity app entries.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: compiz 1:0.9.4+bzr20110415-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
CompizPlugins: 
[core,bailer,detection,composite,opengl,compiztoolbox,decor,grid,regex,neg,move,place,mousepoll,resize,imgpng,vpswitch,gnomecompat,snap,session,animation,unitymtgrabhandles,workarounds,wall,expo,ezoom,staticswitcher,fade,scale,unityshell]
CompositorRunning: compiz
Date: Mon May 23 00:52:10 2011
DistUpgraded: Log time: 2011-04-28 22:01:53.236794
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 ATI Technologies Inc RS880 [Radeon HD 4250] [1002:9715] (prog-if 00 [VGA 
controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:843e]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
InstallationMedia_: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
JockeyStatus: xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver 
(Proprietary, Enabled, In use)
MachineType: System manufacturer System Product Name
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae 
root=UUID=4e67e412-cb5e-4858-85d6-12e78cd70ef3 ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Renderer: Unknown
SourcePackage: compiz
UpgradeStatus: Upgraded to natty on 2011-04-29 (23 days ago)
dmi.bios.date: 09/08/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1601
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M4A88TD-V EVO/USB3
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1601:bd09/08/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A88TD-VEVO/USB3:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.fglrx-installer: fglrx-installer N/A
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20110107+b795ca6e-0ubuntu7

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug compiz-0.9 i386 natty needs-reassignment regression-update 
running-unity ubuntu unity-2d

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https://bugs.launchpad.net/bugs/786774

Title:
  Regression: Compiz Enhanced Zoom plugin jerky,slow and unresponsive

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