Troubleshoot issues with ArchLinux upgrade to 3.16.1,xorg desktop environment

"Phenomenon" has terminal input user name, password, desktop environment failed to start.

The "error" Log file shows:

(EE)
Fatal Server Error:
(EE) Xf86openconsole:vt_activate failed:operation not permitted

The "cause" is caused by xorg upgrade, as described below:

fs#41257-[Xorg-server] Take advantage of the Non-root X support

"Resolve" modify. Bash_profile use the following command to start xorg:

if [[ -z $DISPLAY ]] && [[ $(tty) = /dev/tty1 ]]; then  startx -- vt1; exit  logoutfiReference: Xorg-server 1.16 Issues