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[Scaler <1451613@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Since a recent update (around April 29th), sometimes (approximately once a day) when I lock my computer screen (CTRL+L or using system menu) the computer freeze for a while (2 to 30 seconds) before showing the login screen.
Then when I try to unlock the screen I need to enter my password twice (with no error message after the first try).
Once logged in, all applications are closed. Uptime is still running (since no reboot) and services too (with no interruption).

Looking at the apport.log file (see attached) it seems that when I try
to lock the screen, compiz crashes.

I've attached the compiz crash file too (_usr_bin_compiz.1000.crash) but
without the 100Mo data of base64 core dumb…


I'm using Ubuntu 14.04 AMD64.
Graphics drivers: nvidia-331.113 (tested)

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

** Attachment added: "apport.log and _usr_bin_compiz.1000.crash"
   https://bugs.launchpad.net/bugs/1451613/+attachment/4390911/+files/compiz_crash.tar.gz

** Summary changed:

- Unity/compiz crassh when locking screen
+ Unity/compiz crashes when locking screen

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https://bugs.launchpad.net/bugs/1451613

Title:
  Unity/compiz crashes when locking screen

Status in unity package in Ubuntu:
  New

Bug description:
  Since a recent update (around April 29th), sometimes (approximately once a day) when I lock my computer screen (CTRL+L or using system menu) the computer freeze for a while (2 to 30 seconds) before showing the login screen.
  Then when I try to unlock the screen I need to enter my password twice (with no error message after the first try).
  Once logged in, all applications are closed. Uptime is still running (since no reboot) and services too (with no interruption).

  Looking at the apport.log file (see attached) it seems that when I try
  to lock the screen, compiz crashes.

  I've attached the compiz crash file too (_usr_bin_compiz.1000.crash)
  but without the 100Mo data of base64 core dumb…

  
  I'm using Ubuntu 14.04 AMD64.
  Graphics drivers: nvidia-331.113 (tested)

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