thx,resolved!!:)

we have the same problem
i search on the internet
one of the article says reinstall the xorg-server in the arch-linux bbs
i dont know wether it could help u :)

i created the account with the command 'useradd -d /home/hacksign'
but i cannot startx
error is
cannot open /dev/tty0 (Permission Denied)
ls -l /dev/tty0 is
lwrxwrxwrx root root ...
and i...