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[Marco Trevisan (Treviño) <mail@xxxxxxxxx>]

** Changed in: unity (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/843383

Title:
  Small lag in nvidia performance mode 'upscaling' when needed by
  compiz, ect.

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

Bug description:
  I see this quite plainly with rotate and desktop based viewport switching, (scroll on desktop), where after a short period of idle there is always an initial  lag when switching desktops, after which all is normal till next idle period.
  A more generic case  - 

  Open any non maxed window, a terminal will do
  Grab and move the window, it does so easily and smoothly
  Do nothing for about 30 -40 secs
  Grab and move the window again, there is a small lag and stickiness to the movement, after a sec or 2 compiz 'catches 'up and goes back to normal

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: compiz 1:0.9.5.92+bzr2791-0ubuntu2
  ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
  Uname: Linux 3.0.0-10-generic i686
  NonfreeKernelModules: nvidia
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86 Kernel Module  280.13  Wed Jul 27 16:55:43 PDT 2011
   GCC version:  gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-7ubuntu2)
  Architecture: i386
  CompizPlugins: [core,composite,opengl,decor,text,imgpng,compiztoolbox,fade,resize,mousepoll,cube,rotate,gnomecompat,vpswitch,move,scale,regex,expo,place,unityshell,scaleaddon]
  CompositorRunning: compiz
  Date: Tue Sep  6 19:19:58 2011
  DistUpgraded: Fresh install
  DistroCodename: oneiric
  DistroVariant: ubuntu
  DkmsStatus:
   nvidia-current, 280.13, 3.0.0-10-generic, i686: installed
   nvidia-current, 280.13, 3.0.0-9-generic, i686: installed
  GraphicsCard:
   nVidia Corporation G86 [GeForce 8400M GS] [10de:0427] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:0209]
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110831)
  JockeyStatus:
   xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
   xorg:nvidia_current-update - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
   xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, Not in use)
   xorg:nvidia_173-update - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
  MachineType: Dell Inc. XPS M1330
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-10-generic root=UUID=ad432a25-9ac2-4357-9630-7b4a0dc3deb2 ro quiet splash vt.handoff=7
  SourcePackage: compiz
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/26/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A15
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: XPS M1330
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.5.92+bzr2791-0ubuntu2
  version.libdrm2: libdrm2 2.4.26-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

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