2016-UbuntuLoginIssues.md

https://mobile.twitter.com/jcase/status/767745839473188865

http://askubuntu.com/questions/590561/ubuntu-14-04-login-loop-problem

http://askubuntu.com/questions/223501/ubuntu-gets-stuck-in-a-login-loop

http://askubuntu.com/questions/759995/after-upgrade-from-14-04-to-16-04-login-screen-runs-in-a-loop-while-console-logi

http://askubuntu.com/questions/423725/ubuntu-12-04-32bit-cant-login

Removing ~/.config/dconf/user made it work again as noted above, but specifically something in /org/compiz since running 'dconf reset -f /org/compiz/' worked too.

https://bugs.launchpad.net/ubuntu/+source/at-spi2-core/+bug/1285444