For me, this bug is easily reproducible (happens within 1 min. of user session start) on xserver-xorg-video-nouveau 1.0.2
My user X session is compiz + classic + upstream gnome-panel + Radiance theme on NV84. The stack trace is nearly identical to the original reporter's (I do get 'Failed to idle' or 'Unexpected page flip' at other times but those seem unrelated to this bug). This bug has been low-priority for me because it doesn't seem to affect stability. This bug is _not_ reproducible with ppa:mlankhorst/ppa xserver-xorg- video-nouveau 1.0.6+spam~quantal2. Let me know if bisect is required. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/1033533 Title: Xorg crashed with SIGABRT: exaMemcpyBox with src=0x0 on nouveau with SW rendering Status in “xserver-xorg-video-nouveau” package in Ubuntu: Confirmed Status in “xserver-xorg-video-nouveau” source package in Quantal: Confirmed Status in “xserver-xorg-video-nouveau” source package in Raring: Confirmed Bug description: Crash doing memcpy in EXA on nouveau, with software rendering activated. #8 <signal handler called> No symbol table info available. #9 __memcpy_sse2 () at ../sysdeps/x86_64/multiarch/../memcpy.S:72 No locals. #10 0x00007f570e63684e in memcpy (__len=23, __src=0x0, __dest=0x7f5713877100) at /usr/include/x86_64-linux-gnu/bits/string3.h:52 No locals. #11 exaMemcpyBox (pbox=pbox@entry=0x7fffef000de0, src=0x0, src_pitch=64, dst=0x7f5713877100 "", dst_pitch=24, pPixmap=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at ../../exa/exa_migration_classic.c:59 i = 16 cpp = <optimized out> bytes = 23 #12 0x00007f570e636d03 in exaCopyDirty (migrate=migrate@entry=0x7fffef000e40, pValidDst=0x7f5713dc3e40, pValidSrc=0x7f5713dc3e50, transfer=0x7f570f28b7f0 <nouveau_exa_download_from_screen>, fallback_index=fallback_index@entry=1, sync=0x7f570e635780 <exaWaitSync>) at ../../exa/exa_migration_classic.c:240 pPixmap = 0x7f5713dc3da0 pExaPixmap = 0x7f5713dc3e00 damage = <optimized out> CopyReg = {extents = {x1 = 0, y1 = 0, x2 = 23, y2 = 16}, data = 0x0} save_use_gpu_copy = 1 save_pitch = 64 pBox = 0x7fffef000de0 nbox = 1 access_prepared = 1 need_sync = 0 #13 0x00007f570e636f32 in exaCopyDirtyToSys (migrate=migrate@entry=0x7fffef000e40) at ../../exa/exa_migration_classic.c:285 pPixmap = <optimized out> pExaScr = 0x7f5713877100 pExaPixmap = 0x0 #14 0x00007f570e63951a in exaPrepareAccessReg_mixed (pPixmap=0x7f5713dc3da0, index=<optimized out>, pReg=0x0) at ../../exa/exa_migration_mixed.c:254 as_dst = 1 pixmaps = {{as_dst = 0, as_src = 1, pPix = 0x7f5713dc3da0, pReg = 0x0}} pExaPixmap = 0x7f5713dc3e00 has_gpu_copy = <optimized out> success = <optimized out> [Original Report] The crash report started immediately after login. ProblemType: Crash DistroRelease: Ubuntu 12.10 Package: xserver-xorg-core 2:1.12.99.902-0ubuntu1 ProcVersionSignature: Ubuntu 3.5.0-8.8-generic 3.5.0 Uname: Linux 3.5.0-8-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.4-0ubuntu6 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CrashCounter: 1 Date: Sun Aug 5 14:46:44 2012 DistUpgraded: Fresh install DistroCodename: quantal DistroVariant: ubuntu DkmsStatus: virtualbox, 4.1.18, 3.5.0-6-generic, x86_64: installed virtualbox, 4.1.18, 3.5.0-8-generic, x86_64: installed ExecutablePath: /usr/bin/Xorg ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: NVIDIA Corporation C61 [GeForce 6100 nForce 400] [10de:03d2] (rev a2) (prog-if 00 [VGA controller]) Subsystem: NVIDIA Corporation Device [10de:cb84] InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120519) Lsusb: Bus 001 Device 002: ID 18ec:3399 Arkmicro Technologies Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub ProcCmdline: /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none ProcEnviron: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-8-generic root=UUID=a80eff25-65c3-4db0-adad-31d8ea95823b ro quiet splash vt.handoff=7 Renderer: Software Signal: 6 SourcePackage: xorg-server StacktraceTop: ?? () from /lib/x86_64-linux-gnu/libc.so.6 ?? () from /usr/lib/xorg/modules/libexa.so ?? () from /usr/lib/xorg/modules/libexa.so ?? () from /usr/lib/xorg/modules/libexa.so ?? () from /usr/lib/xorg/modules/libexa.so Title: Xorg crashed with SIGABRT UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: dmi.bios.date: 09/22/2006 dmi.bios.vendor: Phoenix Technologies, LTD dmi.bios.version: 6.00 PG dmi.board.name: NF-MCP61 dmi.chassis.type: 3 dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd09/22/2006:svn:pn:pvr:rvn:rnNF-MCP61:rvr:cvn:ct3:cvr: version.compiz: compiz 1:0.9.8+bzr3249-0ubuntu2 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.37-0ubuntu2 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.902-0ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-2~ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.2-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1033533/+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