Xorg crashed with SIGSEGV in shadowRemove()

[iolar]

X crashes on startup of Karmic Alpha 4 running as a VM client under VirtualBox 3.0.4 (latest version). Then reverts to max 800x600 screen resolution. Regression: previously worked under Jaunty & in Karmic Alpha 3

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Mon Aug 17 11:34:12 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/Xorg
Lsusb:
 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
MachineType: innotek GmbH VirtualBox
Package: xserver-xorg-core 2:1.6.3-1ubuntu3
PciDisplay:
 00:02.0 VGA compatible controller [0300]: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter [80ee:beef]
  Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
  Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
  Latency: 0
  Region 0: Memory at e0000000 (32-bit, prefetchable) [size=16M]
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-6-generic root=UUID=65f7ea63-f867-411e-860a-46c7e382ab31 ro quiet splash
ProcCmdline: /usr/bin/X :0 -br -verbose -auth /var/run/gdm/auth-for-gdm-47G871/database -nolisten tcp vt7
ProcEnviron:
 LANG=en_IE.UTF-8
 PATH=(custom, no user)
ProcVersionSignature: Ubuntu 2.6.31-6.25-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu5
 libgl1-mesa-glx 7.5-1ubuntu1
 libdrm2 2.4.12-1ubuntu1
 xserver-xorg-video-intel 2:2.8.0-0ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090629.f39cafc5-0ubuntu6
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 ?? ()
 shadowRemove () from /usr/lib/xorg/modules//libshadow.so
 ?? () from /usr/lib/xorg/modules//libshadow.so
 ?? ()
 ?? ()
Title: Xorg crashed with SIGSEGV in shadowRemove()
Uname: Linux 2.6.31-6-generic i686
UserGroups:

dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: i686kernel: 2.6.31-6-generic
SegvAnalysis:
 Segfault happened at: 0x817e1fa: mov %edi,-0x4(%ebp)
 PC (0x0817e1fa) ok
 source "%edi" ok
 destination "-0x4(%ebp)" (0xbfbdcee4) ok
 SP (0xbfbdcec0) ok
 Reason could not be automatically determined.
SegvReason: Reason could not be automatically determined.

[Apport retracing service (apport)]

StacktraceTop:damageValidateGC (pGC=0x9b07ab0, changes=162372560,
shadowRemove (pScreen=0x9adb118, pPixmap=0x9b07ab0)
shadowCloseScreen (i=0, pScreen=0x9adb118)
DGAHandleEvent (screen_num=0, event=0x9adb118,
miDCDeviceCleanup (pDev=0x0, pScreen=0x9adb118)

[Felix Geyer (debfx)]

Does the X server actually crash or is the apport dialog just popping up?

[Vish (vish)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future.
To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New".