Please collect a full backtrace on this crash - see http://wiki.ubuntu.com/X/Backtracing for guidance.
** Description changed: On a 12.10 amd64 host with the 12.04 LTS qemu-kvm package (due to bug #1040033) using the cirrus (ie, the default qemu-kvm driver) with an up to date 12.10 guest (machine='pc-1.0'), lightdm starts fine. If I proceed to login, X crashes. If I upgrade qemu-kvm to 1.1~rc+dfsg- 1ubuntu10, I am able to login fine. I don't know why the crash file wasn't uploaded. That said, this happens every time and is easy to reproduce. + + (EE) BUG: triggered 'if (inSignalContext)' + (EE) BUG: ../../os/log.c:472 in LogVMessageVerb() + (EE) Warning: attempting to log data in a signal unsafe manner while in signal context. Please update to check inSignalContext and/or use LogMessageVerbSigSafe() or ErrorFSigSafe(). The offending log format message is: + VMWARE(0): vmmouse enable absolute mode + + (EE) + (EE) Backtrace: + (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7f98382b88c6] + (EE) 1: /usr/bin/X (LogVMessageVerb+0x8c) [0x7f98382c3acc] + (EE) 2: /usr/bin/X (xf86Msg+0x8f) [0x7f98381b034f] + (EE) 3: /usr/lib/xorg/modules/input/vmmouse_drv.so (0x7f9834521000+0x191f) [0x7f983452291f] + (EE) 4: /usr/bin/X (0x7f9838110000+0x93637) [0x7f98381a3637] + (EE) 5: /usr/bin/X (0x7f9838110000+0xbcca8) [0x7f98381ccca8] + (EE) 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f9837436000+0xfcb0) [0x7f9837445cb0] + (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (__select+0x13) [0x7f98361876e3] + (EE) 8: /usr/bin/X (WaitForSomething+0x190) [0x7f98382b5cf0] + (EE) 9: /usr/bin/X (0x7f9838110000+0x55791) [0x7f9838165791] + (EE) 10: /usr/bin/X (0x7f9838110000+0x4455a) [0x7f983815455a] + (EE) 11: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f98360bd76d] + (EE) 12: /usr/bin/X (0x7f9838110000+0x4489d) [0x7f983815489d] + (EE) + [ 17.571] (II) XKB: reuse xkmfile /var/lib/xkb/server-B2FC13ED4E00C26DC4C5E2885151412D28B2D8F8.xkm + [ 19.355] (EE) + [ 19.355] (EE) Backtrace: + [ 19.355] (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7f98382b88c6] + [ 19.356] (EE) 1: /usr/bin/X (0x7f9838110000+0x1ac6f9) [0x7f98382bc6f9] + [ 19.356] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f9837436000+0xfcb0) [0x7f9837445cb0] + [ 19.356] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7f983609c000+0x911ae) [0x7f983612d1ae] + [ 19.356] (EE) 4: /usr/lib/xorg/modules/drivers/cirrus_drv.so (cirRefreshArea+0xbe) [0x7f9834f45ebe] + [ 19.356] (EE) 5: /usr/lib/xorg/modules/libshadowfb.so (0x7f9833cc7000+0x3af3) [0x7f9833ccaaf3] + [ 19.356] (EE) 6: /usr/bin/X (0x7f9838110000+0x519fb) [0x7f98381619fb] + [ 19.356] (EE) 7: /usr/bin/X (0x7f9838110000+0x55a41) [0x7f9838165a41] + [ 19.356] (EE) 8: /usr/bin/X (0x7f9838110000+0x4455a) [0x7f983815455a] + [ 19.356] (EE) 9: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f98360bd76d] + [ 19.356] (EE) 10: /usr/bin/X (0x7f9838110000+0x4489d) [0x7f983815489d] + [ 19.356] (EE) + [ 19.356] (EE) Segmentation fault at address 0x7f9834cb7ee4 + [ 19.356] + Fatal server error: + [ 19.356] Caught signal 11 (Segmentation fault). Server aborting + ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: xorg 1:7.7+1ubuntu3 ProcVersionSignature: User Name 3.5.0-13.14-generic 3.5.3 Uname: Linux 3.5.0-13-generic x86_64 ApportVersion: 2.5.1-0ubuntu4 Architecture: amd64 CurrentDmesg: [ 3.509976] init: plymouth-upstart-bridge main process (467) killed by TERM signal Date: Tue Sep 4 09:20:41 2012 DistUpgraded: Fresh install DistroCodename: quantal DistroVariant: ubuntu GraphicsCard: Cirrus Logic GD 5446 [1013:00b8] (prog-if 00 [VGA controller]) Subsystem: Red Hat, Inc Device [1af4:1100] InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120727.1) Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: Bochs Bochs ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-13-generic root=UUID=864d1ea6-19be-4372-9f05-94f7633a6f7c ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/01/2007 dmi.bios.vendor: Bochs dmi.bios.version: Bochs dmi.chassis.type: 1 dmi.chassis.vendor: Bochs dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2007:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr: dmi.product.name: Bochs dmi.sys.vendor: Bochs version.compiz: compiz 1:0.9.8.0-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.38-0ubuntu2 version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120821.c1114c61-0ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120821.c1114c61-0ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.905-0ubuntu3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1 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 2:2.20.3-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1 ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Changed in: xorg-server (Ubuntu) Importance: Undecided => High ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in Ubuntu. https://bugs.launchpad.net/bugs/1045845 Title: 12.10 guest crash on login when using 12.04 qemu-kvm with cirrus driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1045845/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs