Looks like this problem only occurs when GPU is at the lowest performance level (Nvidia Powermizer). At that point performance is low enough to trigger some kind of race which causes wacky text rendering.
-- 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/1077639 Title: Text repaint problems in Emacs Status in Compiz: New Status in “compiz” package in Ubuntu: Confirmed Status in “emacs-defaults” package in Ubuntu: Confirmed Status in “nvidia-graphics-drivers” package in Ubuntu: Confirmed Bug description: I experience text repaint issues in Emacs when running under Unity. The following video demonstrates the problem: http://www.youtube.com/watch?v=VWh4kEecVsQ Text glyphs vanish and reappear in strange ways. Checking option "Force full screen redraws (buffer swap) on repaint" in CCSM makes the problem go away (also shown in video). The problem does not occur when running Emacs under for instance Openbox. Might be related to compositing and/or nvidia. I experience the problem on two different computers (both Nvidia), although it's easier to reproduce on one of them. Ubuntu 12.04 x86-64 Nvidia driver 304.64 Unity 5.16.0+bzr2410sruubuntu0+709 (also happens with Unity 5.16.0-0ubuntu1 from precise-updates). Compiz 1:0.9.7.8+bzr3121-0ubuntu1~test1 Emacs 24.2 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: unity 5.16.0+bzr2410sruubuntu0+709 [origin: LP-PPA-unity-team-sru] ProcVersionSignature: Ubuntu 3.2.0-33.52-generic 3.2.31 Uname: Linux 3.2.0-33-generic x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.gpus.0: Error: [Errno 21] Er en filkatalog: '/proc/driver/nvidia/gpus/0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 304.64 Tue Oct 30 10:58:20 PDT 2012 GCC version: gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) .proc.driver.nvidia.warnings.fbdev: Your system is not currently configured to drive a VGA console on the primary VGA device. The NVIDIA Linux graphics driver requires the use of a text-mode VGA console. Use of other console drivers including, but not limited to, vesafb, may result in corruption and stability problems, and is not supported. .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu15 Architecture: amd64 CompizPlugins: [core,composite,opengl,decor,gnomecompat,imgpng,unitymtgrabhandles,vpswitch,grid,put,place,compiztoolbox,mousepoll,commands,resize,snap,move,regex,wall,session,animation,fade,workarounds,expo,ezoom,scale,unityshell] CompositorRunning: compiz CrashDB: unity Date: Sun Nov 11 14:40:12 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DkmsStatus: nvidia-current, 304.64, 3.2.0-33-generic, x86_64: installed GraphicsCard: NVIDIA Corporation GF108 [GeForce GT 440] [10de:0de0] (rev a1) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:838a] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) JockeyStatus: xorg:nvidia_current - NVIDIA aksellerert grafikkdriver (Merkebeskyttet, Aktiv, I bruk) xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Merkebeskyttet, Deaktivert, Ikke i bruk) xorg:nvidia_experimental_304 - NVIDIA accelerated graphics driver (**experimental** beta) (Merkebeskyttet, Deaktivert, Ikke i bruk) xorg:nvidia_experimental_310 - NVIDIA accelerated graphics driver (**experimental** beta) (Merkebeskyttet, Deaktivert, Ikke i bruk) MachineType: System manufacturer P5E WS Pro MarkForUpload: True ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-33-generic root=UUID=a1277179-5389-4b3a-8648-0a5c044326b6 ro quiet splash vt.handoff=7 SourcePackage: unity UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/07/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1203 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5E WS Pro dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1203:bd05/07/2009:svnSystemmanufacturer:pnP5EWSPro:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5EWSPro:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: P5E WS Pro dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz 1:0.9.7.8+bzr3121-0ubuntu1~test1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.39-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.8 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1~precise~xup2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.19.0-0ubuntu1~xup1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3~precise~xup2 To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1077639/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
