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[Bug 815674] Re: X locks up when uxterm starts

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I see in the logs that X crashed, rather than locked up?

If this is correct, can you collect a full backtrace on this bug?
Please see http://wiki.ubuntu.com/X/Backtracing for directions.

If not, what we need are logs from right after the failure (you may need
to ssh in and collect them).

** Description changed:

  After upgrading from lucid to natty, running Xterm is fatal to the Xserver, no output in dmesg.
  The graphics card, 01:00.0 VGA compatible controller: nVidia Corporation G96 [GeForce 9500 GT] (rev a1), is not using the proprietary drivers.
+ 
+ [236919.252] 
+ Backtrace:
+ [236919.795] 0: /usr/bin/X (xorg_backtrace+0x26) [0x4a2656]
+ [236919.795] 1: /usr/bin/X (0x400000+0x621ca) [0x4621ca]
+ [236919.795] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb206502000+0xfc60) [0x7fb206511c60]
+ [236919.795] 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb20542d000+0x7a0e2) [0x7fb2054a70e2]
+ [236919.795] 4: /lib/x86_64-linux-gnu/libc.so.6 (__libc_malloc+0x6e) [0x7fb2054a931e]
+ [236919.795] 5: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x8b44) [0x7fb202a1bb44]
+ [236919.795] 6: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x11aa8) [0x7fb202a24aa8]
+ [236919.796] 7: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x9ca8) [0x7fb202a1cca8]
+ [236919.796] 8: /usr/bin/X (miPolyFillArc+0x129a) [0x55625a]
+ [236919.796] 9: /usr/bin/X (0x400000+0xdc863) [0x4dc863]
+ [236919.796] 10: /usr/bin/X (0x400000+0x2ac95) [0x42ac95]
+ [236919.796] 11: /usr/bin/X (0x400000+0x2e2a9) [0x42e2a9]
+ [236919.796] 12: /usr/bin/X (0x400000+0x21a7e) [0x421a7e]
+ [236919.796] 13: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) [0x7fb20544beff]
+ [236919.796] 14: /usr/bin/X (0x400000+0x21629) [0x421629]
+ [236919.796] Segmentation fault at address 0x3a8b838
+ [236919.796] 
+ Caught signal 11 (Segmentation fault). Server aborting
+ [236919.796] 
+ Please consult the The X.Org Foundation support 
+ 	 at http://wiki.x.org
+  for help. 
+ [236919.796] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
+ [236919.796] 
+ [236922.897] [mi] EQ overflowing. The server is probably stuck in an infinite loop.
+ [236922.897] 
+ Backtrace:
+ [236922.923] 0: /usr/bin/X (xorg_backtrace+0x26) [0x4a2656]
+ [236922.923] 1: /usr/bin/X (mieqEnqueue+0x1f4) [0x4a1914]
+ [236922.923] 2: /usr/bin/X (xf86PostMotionEventM+0x97) [0x47d797]
+ [236922.923] 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fb201087000+0x5ff3) [0x7fb20108cff3]
+ [236922.923] 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fb201087000+0x668d) [0x7fb20108d68d]
+ [236922.923] 5: /usr/bin/X (0x400000+0x6c687) [0x46c687]
+ [236922.923] 6: /usr/bin/X (0x400000+0x124c1e) [0x524c1e]
+ [236922.923] 7: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb206502000+0xfc60) [0x7fb206511c60]
+ [236922.923] 8: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb20542d000+0xf55ae) [0x7fb2055225ae]
+ [236922.923] 9: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb20542d000+0x7e80f) [0x7fb2054ab80f]
+ [236922.923] 10: /lib/x86_64-linux-gnu/libc.so.6 (cfree+0x68) [0x7fb2054a98d8]
+ [236922.923] 11: /usr/bin/X (0x400000+0x67012) [0x467012]
+ [236922.923] 12: /usr/bin/X (0x400000+0x674f4) [0x4674f4]
+ [236922.923] 13: /usr/bin/X (CloseWellKnownConnections+0x2f) [0x45f71f]
+ [236922.923] 14: /usr/bin/X (0x400000+0x6b098) [0x46b098]
+ [236922.923] 15: /usr/bin/X (0x400000+0x6bcd2) [0x46bcd2]
+ [236922.923] 16: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb206502000+0xfc60) [0x7fb206511c60]
+ [236922.923] 17: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb20542d000+0x7a0e2) [0x7fb2054a70e2]
+ [236922.923] 18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_malloc+0x6e) [0x7fb2054a931e]
+ [236922.923] 19: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x8b44) [0x7fb202a1bb44]
+ [236922.923] 20: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x11aa8) [0x7fb202a24aa8]
+ [236922.923] 21: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x9ca8) [0x7fb202a1cca8]
+ [236922.923] 22: /usr/bin/X (miPolyFillArc+0x129a) [0x55625a]
+ [236922.923] 23: /usr/bin/X (0x400000+0xdc863) [0x4dc863]
+ [236922.923] 24: /usr/bin/X (0x400000+0x2ac95) [0x42ac95]
+ [236922.923] 25: /usr/bin/X (0x400000+0x2e2a9) [0x42e2a9]
+ [236922.923] 26: /usr/bin/X (0x400000+0x21a7e) [0x421a7e]
+ [236922.923] 27: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) [0x7fb20544beff]
+ [236922.923] 28: /usr/bin/X (0x400000+0x21629) [0x421629]
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: xorg 1:7.6+4ubuntu3.1
  ProcVersionSignature: Ubuntu 3.0.0-6.7-generic 3.0.0-rc7
  Uname: Linux 3.0.0-6-generic x86_64
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  Date: Sun Jul 24 22:06:31 2011
  DistUpgraded: Log time: 2011-07-07 19:29:32.286470
  DistroCodename: natty
  DistroVariant: ubuntu
  GraphicsCard:
-  nVidia Corporation G96 [GeForce 9500 GT] [10de:0640] (rev a1) (prog-if 00 [VGA controller])
-    Subsystem: eVga.com. Corp. Device [3842:c959]
+  nVidia Corporation G96 [GeForce 9500 GT] [10de:0640] (rev a1) (prog-if 00 [VGA controller])
+    Subsystem: eVga.com. Corp. Device [3842:c959]
  MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7514
  ProcEnviron:
-  LANGUAGE=en_US:en
-  PATH=(custom, user)
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  LANGUAGE=en_US:en
+  PATH=(custom, user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: root=/dev/MIX/root ro
  Renderer: Software
  SourcePackage: xorg
  UpgradeStatus: Upgraded to natty on 2011-07-08 (16 days ago)
  dmi.bios.date: 07/02/2008
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V1.3
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: MS-7514
  dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.3:bd07/02/2008:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7514:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnMS-7514:rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
  dmi.product.name: MS-7514
  dmi.product.version: 1.0
  dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
  version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2
  version.ia32-libs: ia32-libs 20090808ubuntu13
  version.libdrm2: libdrm2 2.4.23-1ubuntu6
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
  version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)

** Changed in: xorg-server (Ubuntu)
   Importance: Undecided => High

** Changed in: xorg-server (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/815674

Title:
  X locks up when uxterm starts

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References

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