Ok, so the OpenGL plugin is doing something the hardware doesn't like. The biggest change in OpenGL for 15.04 is the X11 Sync objects. I'm wondering if the driver is saying it's supported, but the GPU can't handle it.
Could you try opening CCSM and go to the OpenGL tab and uncheck "X11 sync objects"? -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1448775 Title: Unable to login after upgrade from 14.10 to 15.04 possible XOrg crash Status in Compiz: New Status in unity package in Ubuntu: New Bug description: After upgrade from working machine with 14.10 to 15.10 I'm unable to login. Right after password screen I see loading of desktop and I'm returned to password prompt again. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,imgpng,unitymtgrabhandles,move,compiztoolbox,place,grid,wall,vpswitch,regex,resize,gnomecompat,snap,session,animation,expo,workarounds,ezoom,fade,scale,unityshell] Date: Sun Apr 26 23:07:55 2015 DistUpgraded: 2015-04-26 22:20:44,130 DEBUG enabling apt cron job DistroCodename: vivid DistroVariant: ubuntu DkmsStatus: virtualbox, 4.3.26: added EcryptfsInUse: Yes ExtraDebuggingInterest: I just need to know a workaround GraphicsCard: NVIDIA Corporation GT218M [GeForce 315M] [10de:0a7a] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Toshiba America Info Systems GeForce 315M [1179:fd71] InstallationDate: Installed on 2014-11-07 (170 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: TOSHIBA SATELLITE C670-10V ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=pl_PL.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-39-generic root=UUID=28cea712-ba61-42af-a038-545501a067f8 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg crash UpgradeStatus: Upgraded to vivid on 2015-04-26 (0 days ago) dmi.bios.date: 04/20/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1.40 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: TKBSC dmi.board.vendor: TOSHIBA dmi.board.version: 1.40 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.40:bd04/20/2011:svnTOSHIBA:pnSATELLITEC670-10V:pvrPSC3QE-00700JPL:rvnTOSHIBA:rnTKBSC:rvr1.40:cvnTOSHIBA:ct9:cvrToBeFilledByO.E.M.: dmi.product.name: SATELLITE C670-10V dmi.product.version: PSC3QE-00700JPL dmi.sys.vendor: TOSHIBA version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.60-2 version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1 xserver.bootTime: Sun Apr 26 23:07:32 2015 xserver.configfile: default xserver.errors: Failed to load module "nvidia" (module does not exist, 0) Failed to load module "nvidia" (module does not exist, 0) xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.17.1-0ubuntu3 xserver.video_driver: nouveau To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1448775/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp

