the user cannot startx

Hi. As I posted before, I have reinstalled Crux-3.1 running kernel-4.0.3. as root I can startx withount any problem. however as the user I cannot. I have not nouveau installed. I have installed the nvdia proprietary driver. after these procedures I have run #nvidia-xconfig #gl-select use xorg #gl-select use nvidia. I have reboot and added user to group "video". I have created a file inside the /etc/X11/xorg.conf.d directory and I have named it like 10_device.conf with the nividia-xconfig configurations. but as the user it fails if I try to startx below is the pastebin of the /etc/X11/xorg.conf.d/10_device.conf and /var/log/Xorg.o.log http://pastebin.com/4LPE8Fzf http://pastebin.com/C0X9F9fv best regards