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[Cyril Soler <1472473@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

System: Ubuntu 14.04, running cinnamon, on a Dell M3800.

The bug happens randomly and logs off the user, who loses everything in the current session.
It happens mostly when a new window is openned, especially terminals (but not only).

>  cat /proc/version_signature 
Ubuntu 3.16.0-41.57~14.04.1-generic 3.16.7-ckt11

Indel driver version: xserver-xorg-video-int 2:2.99.914-1~exp amd64

The same happens with the latest 3.16.0-43 kernel. Here's what I found
in the Xorg.0.log.old file:

[  1063.253] (EE) Backtrace:
[  1063.254] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x7fe8e43aaed8]
[  1063.254] (EE) 1: /usr/bin/X (0x7fe8e4206000+0x1a8f19) [0x7fe8e43aef19]
[  1063.254] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7fe8e2385000+0x36d40) [0x7fe8e23bbd40]
[  1063.254] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0x258f9) [0x7fe8de1b08f9]
[  1063.254] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0x26d7c) [0x7fe8de1b1d7c]
[  1063.254] (EE) 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0xf4f4f) [0x7fe8de27ff4f]
[  1063.254] (EE) 6: /usr/bin/X (0x7fe8e4206000+0x1755bd) [0x7fe8e437b5bd]
[  1063.254] (EE) 7: /usr/bin/X (0x7fe8e4206000+0x176397) [0x7fe8e437c397]
[  1063.255] (EE) 8: /usr/bin/X (DRI2GetBuffersWithFormat+0x10) [0x7fe8e437c770]
[  1063.255] (EE) 9: /usr/bin/X (0x7fe8e4206000+0x178499) [0x7fe8e437e499]
[  1063.255] (EE) 10: /usr/bin/X (0x7fe8e4206000+0x5369e) [0x7fe8e425969e]
[  1063.255] (EE) 11: /usr/bin/X (0x7fe8e4206000+0x574ea) [0x7fe8e425d4ea]
[  1063.255] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fe8e23a6ec5]
[  1063.255] (EE) 13: /usr/bin/X (0x7fe8e4206000+0x42a5e) [0x7fe8e4248a5e]
[  1063.255] (EE) 
[  1063.255] (EE) Bus error at address 0x7fe890108000

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1472473

Title:
  XServer crash logs the user off randomly

Status in linux package in Ubuntu:
  New

Bug description:
  System: Ubuntu 14.04, running cinnamon, on a Dell M3800.

  The bug happens randomly and logs off the user, who loses everything in the current session.
  It happens mostly when a new window is openned, especially terminals (but not only).

  >  cat /proc/version_signature 
  Ubuntu 3.16.0-41.57~14.04.1-generic 3.16.7-ckt11

  Indel driver version: xserver-xorg-video-int 2:2.99.914-1~exp amd64

  The same happens with the latest 3.16.0-43 kernel. Here's what I found
  in the Xorg.0.log.old file:

  [  1063.253] (EE) Backtrace:
  [  1063.254] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x7fe8e43aaed8]
  [  1063.254] (EE) 1: /usr/bin/X (0x7fe8e4206000+0x1a8f19) [0x7fe8e43aef19]
  [  1063.254] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7fe8e2385000+0x36d40) [0x7fe8e23bbd40]
  [  1063.254] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0x258f9) [0x7fe8de1b08f9]
  [  1063.254] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0x26d7c) [0x7fe8de1b1d7c]
  [  1063.254] (EE) 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0xf4f4f) [0x7fe8de27ff4f]
  [  1063.254] (EE) 6: /usr/bin/X (0x7fe8e4206000+0x1755bd) [0x7fe8e437b5bd]
  [  1063.254] (EE) 7: /usr/bin/X (0x7fe8e4206000+0x176397) [0x7fe8e437c397]
  [  1063.255] (EE) 8: /usr/bin/X (DRI2GetBuffersWithFormat+0x10) [0x7fe8e437c770]
  [  1063.255] (EE) 9: /usr/bin/X (0x7fe8e4206000+0x178499) [0x7fe8e437e499]
  [  1063.255] (EE) 10: /usr/bin/X (0x7fe8e4206000+0x5369e) [0x7fe8e425969e]
  [  1063.255] (EE) 11: /usr/bin/X (0x7fe8e4206000+0x574ea) [0x7fe8e425d4ea]
  [  1063.255] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fe8e23a6ec5]
  [  1063.255] (EE) 13: /usr/bin/X (0x7fe8e4206000+0x42a5e) [0x7fe8e4248a5e]
  [  1063.255] (EE) 
  [  1063.255] (EE) Bus error at address 0x7fe890108000

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