Here is the backtrace per your request.
** Attachment added: "backtrace_gnome_shell.txt"
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1419282/+attachment/4314785/+files/backtrace_gnome_shell.txt
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https://bugs.launchpad.net/bugs/1419282
Title:
gnome-shell crashed with SIGILL
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Public bug reported:
After performing 'apt-get dist-upgrade' on my Ubuntu-Gnome Vivid
installation, I can no longer use X. I am presented with the X login.
After typing in my password, I get a blank screen.
ProblemType: Crash
DistroRelease: Ubuntu 15.04
Package: gnome-shell 3.14.3-0ubuntu2
ProcV
