I upgraded to 3.2.0-34-generic and the slow off-screen rendering problem is no longer occurring on my Thinkpad X220. Performance is normal. I haven't tried it on the ASUS yet.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/999493 Title: Intel graphics drivers slow off-screen rendering in Precise Pangolin Status in “xserver-xorg-video-intel” package in Ubuntu: Confirmed Bug description: I have a robotics application built on top of the OGRE3D rendering system that works fine on a wide range of machines running Lucid. When I switch to Precise, it runs so slowly on machines with Intel integrated graphics that it's unusable. But it's fine on machines that use non-Intel graphics (I tried a Dell Optiplex 755 with an ATI RV610 card, which under Precise uses the Gallium 0.4 driver.) I'm reporting this bug using an ASUS Eee PC 1015 netbook; with Precise it uses the Intel IGD driver. I'm seeing the same problem on a Lenovo Thinkpad X220, which uses the Intel Sandybridge Mobile driver. To try to quantify the performance hit, I ran glxgears on the ASUS. Under Lucid it reports 300 fps. Under Precise the same machine is getting 59 fps. That's a 5x slowdown. The Lenovo is getting 60 fps under Precise. One more piece of info: my application runs fine on the ASUS and Lenovo machines when I don't request off-screen rendering. If I'm only rendering to the display, I can pan and zoom around in my virtual world quickly and smoothly. But as soon as my robot client connects and starts requesting off-screen rendering (simulated images for the robot's camera), the performance falls apart and the application becomes unusable. If I kill the client, which disables off-screen rendering, performance returns to normal. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu7 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Tue May 15 02:35:36 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation N10 Family 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] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: ASUSTeK Computer INC. 1015PX ProcEnviron: TERM=xterm PATH=(custom, no username) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=c610008c-72c8-4a92-862e-321cf5605c60 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/18/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1101 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.:bvr1101:bd02/18/2011:svnASUSTeKComputerINC.:pn1015PX:pvrx.x:rvnASUSTeKComputerINC.:rn1015PE:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x: dmi.product.name: 1015PX dmi.product.version: x.x dmi.sys.vendor: ASUSTeK Computer INC. version.compiz: compiz 1:0.9.7.8-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.32-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/999493/+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
