[Bug 359392] Re: [i965] X freezes starting on April 3rd

[Bryce Harrington]

** Description changed:

  [Problem]
  Starting around 4/3, when mesa was upgraded from 7.3 to 7.4, several i965 users started noticing X freeze after several hours of use, triggered by application usage especially noticeable with (but not unique to) compiz enabled.
  
  [Suspects]
  Omitting obviously trivial, unrelated changes, here are what changed in several suspect packages in the timeframe in question:
  
  * intel driver:
    4/01:  118_drop_legacy3d.patch: Removed Legacy3D
    4/03:  114_fix_xv_with_non_gem.patch: Dropped since it caused regression
    4/06:  119_drm_bo_unreference_needs_null.patch: Fixes various nullptr derefs
    4/08:  120_fix_vt_switch.patch: Fix nullptr deref in video playback
  
  * xserver:
    4/08:  177_animated_cursor_change_master.patch: fixes animated cursors
    4/06:  174_set_bg_pixmap_of_cow_to_none.patch: Sets bg pixmap of
           composite overlay window to None
    3/30:  172_cwgetbackingpicture_nullptr_check.patch: fix race condition
           when minimzing/maximizing firefox with flash video playing.
  
  * mesa:
    4/03:  7.4 released
      * Added MESA_GLX_FORCE_DIRECT env var for Xlib/software driver
      * GLSL version 1.20 is returnd by the GL_SHADING_LANGUAGE_VERSION query
      * glGetActiveUniform() returned wrong size for some array types
      * Fixed some error checking in glUniform()
      * Fixed a potential glTexImage('proxy target') segfault
      * Fixed bad reference counting for 1D/2D texture arrays
      * Fixed VBO + glPush/PopClientAttrib() bug #19835
  >   * Assorted i965 driver bug fixes
      * Fixed a Windows compilation failure in s_triangle.c
      * Fixed a GLSL array indexing bug
      * Fixes for building on Haiku
  
  * linux:
    4/04:  2.6.28-11.41:  Revert MCHBAR patch
    4/02:  2.6.28-11.40:  Add MCHBAR patch
  
  * libdrm:
    4/04:  02_libdrm_nouveau_update.patch: Only affects nouveau code
    3/29:  libdrm-nouveau1.symbols: Probably innocuous
  
  
  [Original Report]
  I am using kubuntu jaunty beta. My system is freezing randomly. I have the latest updates. 
  After freezing the mouse pointer still works. And sometimes the power off button works. On powering off , when the stage for kubuntu logo comes its showing a distorted image.
  
  This happens with or without desktop effects. These freezes are very randomly, but mostly when I run some new applications.  
  I am using intel graphics.
+ 
+ [lspci]
+ 00:00.0 Host bridge [0600]: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub [8086:2a00] (rev 0c)
+     	Subsystem: Hewlett-Packard Company Device [103c:30be]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c)
+     	Subsystem: Hewlett-Packard Company Device [103c:30be]

-- 
[i965] X freezes starting on April 3rd
https://bugs.launchpad.net/bugs/359392
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