All - Performance bugs are almost always subjective and often vague. For this reason they are difficult to ever declare resolved.
To ensure the bug you're commenting on actually represents your performance problem personally, and to ensure a quicker resolution, please log your own performance bugs: ubuntu-bug compiz -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/877438 Title: [8xxx] Unity/compiz has sluggish performance on dual-head with nvidia driver Status in “compiz” package in Ubuntu: Confirmed Status in “nvidia-graphics-drivers” package in Ubuntu: Incomplete Bug description: When Unity/Compiz is running with the -nvidia driver and two monitors are connected, compiz and/or Xorg will consume CPU time (50-90% typ.) with window activity (opening large numbers of windows, resizing, moving, etc.) Disabling "Sync to VBlank" appears not to help. Duplicate bug #737454 suggests it may be an issue specific to the NVIDIA 8xxx series cards with large resolution sizes. [Workarounds] The issue can be reliably worked around by either disabling one of the displays, or disabling the Unity Plugin in CompizConfig Settings Manager The nouveau driver on the same hardware typically does not have the performance issue (but may have other issues such as stability, rendering it not a valid workaround). Some have reported that upgrading to -nvidia 290.03 solves the problem; others report it has no effect. See http://www.nvnews.net/vbulletin/showthread.php?p=2493300 Some have reported that lowering the external monitor resolution to match the laptop LVDS resolution brings performance to acceptable levels. Description: Ubuntu 11.10 Release: 11.10 -- xorg: Installed: 1:7.6+7ubuntu7 Candidate: 1:7.6+7ubuntu7 Version table: *** 1:7.6+7ubuntu7 0 500 http://se.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: xorg 1:7.6+7ubuntu7 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic x86_64 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_64 Kernel Module 280.13 Wed Jul 27 16:53:56 PDT 2011 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu3 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,place,imgpng,gnomecompat,vpswitch,regex,resize,grid,mousepoll,scale,move,session,animation,unitymtgrabhandles,workarounds,wall,expo,ezoom,unityshell] CompositorRunning: compiz Date: Tue Oct 18 11:08:19 2011 DistUpgraded: Log time: 2011-10-14 08:32:51.288330 DistroCodename: oneiric DistroVariant: ubuntu DkmsStatus: nvidia-current, 285.05.09, 3.0.0-12-generic, x86_64: installedError! Could not locate dkms.conf file. File: does not exist. nvidia-current-updates, 280.13, 3.0.0-12-generic, x86_64: installed ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GraphicsCard: nVidia Corporation G86 [Quadro NVS 290] [10de:042f] (rev a1) (prog-if 00 [VGA controller]) Subsystem: nVidia Corporation Device [10de:0492] InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) JockeyStatus: kmod:nvidia_173 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use) kmod:nvidia_173_updates - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use) kmod:nvidia_current_updates - nvidia_current_updates (Proprietary, Enabled, Not in use) kmod:nvidia_current - nvidia_current (Proprietary, Enabled, Not in use) MachineType: Hewlett-Packard HP Compaq dc7800p Small Form Factor ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=f5c340d9-f04b-4bcd-b714-909faceebfda ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to oneiric on 2011-10-14 (4 days ago) dmi.bios.date: 07/18/2007 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 786F1 v01.04 dmi.board.asset.tag: CZC8378X1V dmi.board.name: 0AA8h dmi.board.vendor: Hewlett-Packard dmi.chassis.asset.tag: CZC8378X1V dmi.chassis.type: 4 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr786F1v01.04:bd07/18/2007:svnHewlett-Packard:pnHPCompaqdc7800pSmallFormFactor:pvr:rvnHewlett-Packard:rn0AA8h:rvr:cvnHewlett-Packard:ct4:cvr: dmi.product.name: HP Compaq dc7800p Small Form Factor dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu3 version.ia32-libs: ia32-libs 20090808ubuntu26 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+7ubuntu7 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/877438/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp