Same happens to me in Ubuntu 15.04 -- 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/924304
Title: Maximum number of clients reached: Failed to open display Status in nvidia-graphics-drivers package in Ubuntu: Confirmed Bug description: From time to time this error is repeated in gnome-shell whrn I try to open a new program: Maximum number of clients reachedFailed to open display Maximum number of clients reachedMaximum number of clients reached/usr/lib/libreoffice/program/soffice.bin X11 error: Can't open display: Set DISPLAY environment variable, use -display option or check permissions of your X-Server (See "man X" resp. "man xhost" for details) To solve it I have to reopen the session. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: xorg 1:7.6+7ubuntu7.1 ProcVersionSignature: Ubuntu 3.2.0-10.17-i7 3.2.1-ck1 Uname: Linux 3.2.0-10-i7 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 290.10 Wed Nov 16 17:39:29 PST 2011 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu4 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,imgpng,gnomecompat,mousepoll,vpswitch,place,snap,regex,move,grid,unitymtgrabhandles,wall,resize,session,animation,workarounds,expo,fade,ezoom,scale,unityshell] CompositorRunning: None Date: Tue Jan 31 14:59:15 2012 DistUpgraded: Fresh install DistroCodename: oneiric DistroVariant: ubuntu DkmsStatus: nvidia-current, 290.10, 3.2.0-10-i7, x86_64: installed nvidia-current, 290.10, 3.2.0-8-i7, x86_64: installed vboxhost, 4.1.8, 3.2.0-10-i7, x86_64: installed vboxhost, 4.1.8, 3.2.0-8-i7, x86_64: installed ExtraDebuggingInterest: I just need an easy workaround GraphicsCard: nVidia Corporation GT216 [GeForce GT 220] [10de:0a20] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Giga-byte Technology Device [1458:34d6] JockeyStatus: xorg:nvidia_current - Controlador para tarjetas gráficas NVIDIA (Privativo, Activado, En uso) xorg:nvidia_current_updates - Controlador de gráficos acelerados de NVIDIA (actualizaciones post-lanzamiento) (Privativo, Desactivado, No está en uso) MachineType: Gigabyte Technology Co., Ltd. X58A-UD5 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-10-i7 root=UUID=b29ba7a7-8e7a-4830-b8e1-907cdfe1c663 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) XorgConf: Section "Device" Identifier "Default Device" Option "NoLogo" "True" EndSection dmi.bios.date: 02/01/2011 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: FD dmi.board.name: X58A-UD5 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrFD:bd02/01/2011:svnGigabyteTechnologyCo.,Ltd.:pnX58A-UD5:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnX58A-UD5:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: X58A-UD5 dmi.sys.vendor: Gigabyte Technology Co., Ltd. version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6.1 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+7ubuntu7.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13 version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/924304/+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