We at NVIDIA have investigated the problem and found out that it is an application bug. Our interpretation of the specification is that creating two GLX pixmaps pointing at the same drawable is not allowed, because it can lead to poorly defined behavior if the properties of both GLX drawables don't match. Our driver prevents this, but Compiz appears to try to do this. Tracing the calls done by Compiz shows that in certain cases (subject to a potential race condition on the minimize animation, more reliably happening on unminimize), it will obtain an X pixmap through XCompositeNameWindowPixmap(), then call glXCreatePixmap() and use the created GLX pixmap normally, but never call glXDestroyPixmap() on it. Subsequently, it will call XCompositeNameWindowPixmap() again, while the window's pixmap hasn't changed. This isn't a bug by itself, but subsequently calling glXCreatePixmap() will fail because there already is a GLX pixmap pointing at the drawable (the one that wasn't deleted before). The fix would be to ensure that the pre-existing GLX pixmap is destroyed before attempting to create a new one.
Here is a short trace showing the events I'm describing: xcompositenamewindowpix...@libxcomposite.so.1(0x18f0790, 0x120029a, 0, 0x18fca20) = 0x12002c4 glXCreatePixmap(0x18f0790, 0x14c, 0x12002c4); // glXCreatePixmap returns 0x12002c5 glBindTexture(GL_TEXTURE_2D, 127); glXBindTexImageEXT(0x18f0790, 0x12002c5, 8414, (nil)); [...] --->Draw calls are made. --->glXDestroyPixmap for 0x12002c5 is never called. [...] xcompositenamewindowpix...@libxcomposite.so.1(0x18f0790, 0x120029a, 0, 0x18fca20) = 0x1200303 glXCreatePixmap(0x18f0790, 0x14c, 0x1200303); // glXCreatePixmap returns 0x1200304 glGenTextures(1, 0x1fbf098); // returns: glBindTexture(GL_TEXTURE_2D, 129); glXBindTexImageEXT(0x18f0790, 0x1200304, 8414, (nil)); ---> 0x1200304 pixmap creation fails because another (0x12002c5) points at the same drawable ---> Compiz proceeds normally and makes draw calls, but the texture it thinks it's drawing from isn't there -- Arthur Huillet NVIDIA Linux graphics -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1072206 Title: [nvidia] Window content is black or transparent Status in Compiz: Confirmed Status in NVIDIA Drivers Ubuntu: Confirmed Status in Unity: Confirmed Status in compiz package in Ubuntu: Triaged Status in unity package in Ubuntu: Confirmed Bug description: Ubuntu 12.10 64bit (updated from 12.04) / NVIDIA GeForce 8 proprietary driver. This bug happens to me from 12.04 from some update I think. It appears mostly when I open a new application and only ocassionally. As temporary "solution" creating some other event like opening Unity dash or opening some next window, etc. fix it. Then window content is refreshed and I can see all correctly. Same with stable and experimental nvidia drivers. Screenshot of this bug is attached. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: unity 6.8.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.gpus.0: Error: [Errno 21] je adresářem: '/proc/driver/nvidia/gpus/0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 304.48 Sun Sep 9 20:22:27 PDT 2012 GCC version: gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1) .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: 2.6.1-0ubuntu6 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: Sat Oct 27 23:00:14 2012 DistUpgraded: 2012-10-23 19:34:29,842 DEBUG enabling apt cron job DistroCodename: quantal DistroVariant: ubuntu DkmsStatus: nvidia-experimental-304, 304.48, 3.5.0-17-generic, x86_64: installed virtualbox, 4.1.18, 3.2.0-32-generic, x86_64: installed virtualbox, 4.1.18, 3.5.0-17-generic, x86_64: installed GraphicsCard: NVIDIA Corporation G92 [GeForce 8800 GT] [10de:0611] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Giga-byte Technology Device [1458:3468] InstallationDate: Installed on 2012-08-29 (59 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328) JockeyStatus: kmod:nvidia_experimental_304 - nvidia_experimental_304 (Proprietary, Enabled, Not in use) kmod:nvidia_173 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use) kmod:nvidia_current - 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 binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use) MachineType: System manufacturer System Product Name MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=cs_CZ.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=3ae94b68-4a0c-4633-aec7-b4ed25a23003 ro quiet splash vt.handoff=7 SourcePackage: unity UpgradeStatus: Upgraded to quantal on 2012-10-23 (4 days ago) XorgConf: Section "Device" Identifier "Default Device" Option "NoLogo" "True" EndSection dmi.bios.date: 05/26/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0208 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: P8H61-M LX dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev x.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0208:bd05/26/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8H61-MLX:rvrRevx.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz 1:0.9.8.4-0ubuntu3 version.ia32-libs: ia32-libs 20090808ubuntu36 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 2:1.13.0-0ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3 To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1072206/+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
