Comment 15 for bug 1484380

That crash series has appeared some times ago with :
 https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1424199

usually there is a gnome-shell crash and auto restart; but sometimes the whole session crash

On my system, i have two cases, both running gnome-shell (no ppa or external package):
- a fresh Wily i386 from mini.iso (a week ago or so): does not get crash
- a vivid to wily upgrade, with quite the same config/apps:
   a) get often daily crashes, sometime the whole session
   b) hardly suspect a lib (both used on ubu & kubu as reported into a post above)
   c) i can get crash 'on demand' when i made some on/off switches about extensions.gnome.org addons (both online or with tweak tool)

 ==> the first crash happening is as reported into lp:1424199, then there is a possible cascade crashes

note: i'm using nvidia-355 and have no discrete gpu, so reporting against xserver-video-intel seems not the root cause.
note2: as it happens widely, a language (gcc, python, javascript) might be a better candidate