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[Andrea Azzarone <1415195@xxxxxxxxxxxxxxxxxx>]

Seems to work fine here.

** Changed in: unity
       Status: Incomplete => New

** Changed in: unity (Ubuntu)
       Status: Incomplete => Opinion

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

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https://bugs.launchpad.net/bugs/1415195

Title:
  OpenGL "hello world" windowed vsync app brings unity to its knees

Status in Unity:
  New
Status in unity package in Ubuntu:
  New

Bug description:
  1. Create a basic hello world OpenGL app, e.g. one that draws a single triangle to the screen.
  2. Use windowed mode with vsync on
  3. Try alt+tabbing or activating between different windows and the opengl window by clicking.
  4. Notice how laggy and slow it is.
  5. Try a different window manager besides unity such as xcfe4
  6. Notice that this problem no longer exists.
  --- 
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: u'/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  331.113  Mon Dec  1 21:08:13 PST 2014
   GCC version:  gcc version 4.9.1 (Ubuntu 4.9.1-16ubuntu6)
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: amd64
  BootLog:
   * Setting up X socket directories...        
[ OK ]
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  DistUpgraded: 2014-10-22 01:04:42,973 DEBUG enabling apt cron job
  DistroCodename: utopic
  DistroRelease: Ubuntu 14.10
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  GraphicsCard:
   NVIDIA Corporation GK104M [GeForce GTX 780M] [10de:119f] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: CLEVO/KAPOK Computer Device [1558:0376]
  InstallationDate: Installed on 2013-11-05 (448 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: System76, Inc. Bonobo Extreme
  NonfreeKernelModules: nvidia
  Package: unity 7.3.1+14.10.20141016-0ubuntu1
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-25-generic root=UUID=f3c3398f-92de-4f0b-a638-d4691bec6e84 ro quiet splash
  ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
  Tags:  utopic utopic utopic ubuntu compiz-0.9
  Uname: Linux 3.16.0-25-generic x86_64
  UpgradeStatus: Upgraded to utopic on 2014-10-22 (97 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  _MarkForUpload: True
  dmi.bios.date: 09/04/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.5
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: Bonobo Extreme
  dmi.board.vendor: System76, Inc.
  dmi.board.version: bonx7
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: System76, Inc.
  dmi.chassis.version: bonx7
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd09/04/2013:svnSystem76,Inc.:pnBonoboExtreme:pvrbonx7:rvnSystem76,Inc.:rnBonoboExtreme:rvrbonx7:cvnSystem76,Inc.:ct9:cvrbonx7:
  dmi.product.name: Bonobo Extreme
  dmi.product.version: bonx7
  dmi.sys.vendor: System76, Inc.
  version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu0.1
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
  xserver.bootTime: Sun Jan 25 13:20:43 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.16.0-1ubuntu1.2

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