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[Torsten Spindler <torsten@xxxxxxxxxxxxx>]

I cannot reproduce this crash. I put the laptop in the docking station,
disable the internal display, undock it and the internal display gets
usable again. Putting the laptop back in the docking station does bring
back the external display with the internal display disabled. However,
when gnome-screensaver is running I run into bug 705791.

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https://bugs.launchpad.net/bugs/704889

Title:
  Xorg crash

Status in “xorg-server” package in Ubuntu:
  New

Bug description:
  Binary package hint: xorg

  I have docked the laptop with another monitor. In
  System->Preferences->Monitor I have enabled this monitor and disabled
  the one built into the laptop. Now I undocked the laptop and got a
  blank screen on both. So I docked it back thinking that I would get
  the external display back, but no!

  At least SSH was working and I found this backtrace in the Xorg.log file:
  Backtrace:
  0: /usr/bin/Xorg (xorg_backtrace+0x3b) [0x80eaadb]
  1: /usr/bin/Xorg (mieqEnqueue+0x1ab) [0x80e84cb]
  2: /usr/bin/Xorg (xf86PostMotionEventP+0xd2) [0x80bdec2]
  3: /usr/lib/xorg/modules/input/evdev_drv.so (0xb6d20000+0x48a1) [0xb6d248a1]
  4: /usr/lib/xorg/modules/input/evdev_drv.so (0xb6d20000+0x4b96) [0xb6d24b96]
  5: /usr/bin/Xorg (0x8048000+0x66f9f) [0x80aef9f]
  6: /usr/bin/Xorg (0x8048000+0x118794) [0x8160794]
  7: (vdso) (__kernel_sigreturn+0x0) [0xb772c400]
  8: /usr/lib/xorg/modules/libfb.so (fbOddTile+0x118) [0xb723da48]
  9: /usr/lib/xorg/modules/libfb.so (fbTile+0x8c) [0xb723db0c]
  10: /usr/lib/xorg/modules/libfb.so (fbFill+0x36f) [0xb723566f]
  11: /usr/lib/xorg/modules/libfb.so (fbPolyFillRect+0x1b4) [0xb7235964]
  12: /usr/lib/xorg/modules/drivers/intel_drv.so (0xb725d000+0x63392) [0xb72c0392]
  13: /usr/lib/xorg/modules/drivers/intel_drv.so (0xb725d000+0x5ce0d) [0xb72b9e0d]
  14: /usr/bin/Xorg (0x8048000+0xd7755) [0x811f755]
  15: /usr/bin/Xorg (miPaintWindow+0x1c2) [0x809d0e2]
  16: /usr/bin/Xorg (miWindowExposures+0xc7) [0x809d477]
  17: /usr/bin/Xorg (0x8048000+0x124158) [0x816c158]
  18: /usr/bin/Xorg (miHandleValidateExposures+0x78) [0x81a8eb8]
  19: /usr/bin/Xorg (0x8048000+0x7c87f) [0x80c487f]
  20: /usr/bin/Xorg (xf86EnableDisableFBAccess+0x74) [0x80c4944]
  21: /usr/lib/xorg/modules/drivers/intel_drv.so (0xb725d000+0x5b412) [0xb72b8412]
  22: /usr/bin/Xorg (0x8048000+0x154ff4) [0x819cff4]
  23: /usr/bin/Xorg (0x8048000+0x93016) [0x80db016]
  24: /usr/bin/Xorg (RRScreenSizeSet+0x6c) [0x810a3ac]
  25: /usr/bin/Xorg (ProcRRSetScreenSize+0x1a0) [0x810ad80]
  26: /usr/bin/Xorg (0x8048000+0xbd8f5) [0x81058f5]
  27: /usr/bin/Xorg (0x8048000+0x28eb7) [0x8070eb7]
  28: /usr/bin/Xorg (0x8048000+0x1ed7a) [0x8066d7a]
  29: /lib/tls/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0xb745abd6]
  30: /usr/bin/Xorg (0x8048000+0x1e961) [0x8066961]

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: xorg 1:7.5+5ubuntu1
  ProcVersionSignature: Ubuntu 2.6.32-27.49-generic-pae 2.6.32.26+drm33.12
  Uname: Linux 2.6.32-27-generic-pae i686
  Architecture: i386
  Date: Wed Jan 19 14:11:03 2011
  InstallationMedia: Kaszanka 10.04.1 "Lucid Lynx" - Release i386 (20100903)
  MachineType: Dell Inc. Latitude E6410
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-27-generic-pae root=/dev/mapper/system-root ro quiet splash
  ProcEnviron:
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: xorg
  Symptom: display
  Title: Xorg crash
  dmi.bios.date: 08/10/2010
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A05
  dmi.board.name: 0667CC
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA05:bd08/10/2010:svnDellInc.:pnLatitudeE6410:pvr0001:rvnDellInc.:rn0667CC:rvrA01:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E6410
  dmi.product.version: 0001
  dmi.sys.vendor: Dell Inc.
  glxinfo: Error: [Errno 2] No such file or directory
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       i686
   kernel:             2.6.32-27-generic-pae