X server only starts as root

Question

I have an Arch Linux system, stock kernel and drivers. For some strange reason, xinit produces an error when it is started by a non-root user. The logs say this:

(EE) parse_vt_settings: Cannot open /dev/tty0 (No such file or directory)

However, I can stat and ls the file from the non-root user and the permission on it are 755

Solution

Edit /etc/X11/Xwrapper.config as follow :

allowed_users=anybody
needs_root_rights=yes

Source

Comments

[Tom Hunt]

Possibly relevant: bugzilla.redhat.com/show_bug.cgi?id=1203780 Is your xorg the latest version? Are you using a wrapper?

[ojs]

Umm, on my arch-linux the permissions on /dev/tty0 are 620, and owner is root and group id is tty. Try setting the write permission for group and see if that helps.

[Hi-Angel]

s/Edit/Create. ⁺¹.

[Oli]

Just helped me on a raw Ubuntu 16.04 Server+X install, thanks.

[placid chat]

maybe allowed_user=console would be a better invocation?