Comment # 1 on bug 1098807 from Michel Normand

Created attachment 775042 [details]
user_gui_login-try_gdb_backtraces.log

I saved externally the user_gui_login-problem_detection_logs.tar.xz file at
https://michelmno.fedorapeople.org/boo1098807/ 
as too big to be able to attached to this bug.
It contains the 
segmentation-faults-list.txt
segmentation-faults-info.txt
and related coredumps.

I was able to extract from them the backtraces of /usr/login and /bin/login and
/usr/bin/gnome-shell saved in user_gui_login-try_gdb_backtraces.log attached to
this bug.
* The /bin/login bt has identified source file/line
* The /usr/bin/gnome-shell bt has only one source file/line, I do not know why.