** Description changed:

- When I use the Unity session I automatically get logged out under these
- conditions:
+ [Impact]
+ When I use the Unity session I automatically get logged out under these 
conditions:
  
      When I hover with my mouse over any icon of the sidebar.
      When I press the alt key.
      When I press the super key.
  
  running dmesg after this unwanted logout happens I get following
  information:
  
  compiz[10616]: segfault at 0 ip 00007fbca309feeb sp 00007fff5f59a4d0
  error 4 in i965_dri.so[7fbca2af6000+7e4000]
  
- The info about my installed compiz:
+ This is caused by a mesa upgrade, which added a patch for bug #1727401. The 
crasher is reproduced on:
+ - gen4 / gen5 Intel
+ - if using modesetting X driver, like when xserver-xorg-video-intel is not 
installed, or the HWE stack is installed (xserver-xorg-core-hwe-16.04 defaults 
to modesetting)
  
- compiz:
-   Instal·lat: 1:0.9.13.1+17.10.20170901-0ubuntu1
-   Candidat:   1:0.9.13.1+17.10.20170901-0ubuntu1
-   Taula de versió:
-  *** 1:0.9.13.1+17.10.20170901-0ubuntu1 500
-         500 http://es.archive.ubuntu.com/ubuntu artful/universe amd64 Packages
-         500 http://es.archive.ubuntu.com/ubuntu artful/universe i386 Packages
-         100 /var/lib/dpkg/status
+ [Test case]
+ Log in to Unity, open the dash or try to log out etc. Compiz shouldn't crash.
+ 
+ [Regression potential]
+ The backported patches need to be tested, here for regressions and on 1727401 
that they fix the original bug (again).
+ 
+ Best to test on a wide array of Intel HW:
+ gen4 (965GM/GM45/G45)
+ gen5 (Ironlake)
+ gen6 (Sandy Bridge)
+ gen7 (Bay Trail, Ivy Bridge, Haswell)
+ gen8 (Braswell, Broadwell)
+ gen9 (Apollo Lake, Skylake, Gemini Lake, Kaby Lake, Coffee Lake)

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https://bugs.launchpad.net/bugs/1735594

Title:
  [regression] compiz crashes when hovering over sidebar

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