Comment 17 for bug 1604421

It seems as if XDG_DATA_DIRS gets cleared out at some time (you can see the "::" where the previous XDG_DATA_DIRS content should have been), wonder what component could have caused this. There was no change in ubuntu-touch-session that actually sets the .profile file.

As Pat pointed out on IRC a valid lead would be to check what's being run in /etc/profile.d/ on the broken machine. The only script that touches XDG_DATA_DIRS is my old hack for enabling customized notification sounds, /etc/profile.d/add_custom_to_xdg_data.sh. Maybe it would be a good experiment to try and remove it in the broken system. Doesn't look like much could have gotten broken there. Could anyone list the contents of the /etc/profile.d directory on the xenial non-booting device?