Comment 17 for bug 1505409

Just wanted to add that I was experiencing this problem after a Xenial to Yakkety upgrade of Ubuntu Gnome. I ran Startup Application manager and noticed there were a couple gnome shell welcome binaries [/usr/lib/x86_64-linux-gnu/gnome-initial-setup/gnome-welcome-tour] launching on the user login.

I ended up removing both of them, plus some other items I was certain I didn't need. I then performed a "shutdown -rF now" to do a file system check as I was pretty certain the battery died and the system didn't shutdown cleanly. I haven't experienced the problem again as yet. It might be that I will see it again soon similar to Tommy, but might be worth having a look Tommy to see if you have multiple welcome binaries still in place for Startup to see if there is any correlation with my findings.