I made some others tests. To start the X server in the container I'm now using the command: $ xinit -- /usr/bin/X vt1 In my xorg.conf file I put the minimum to run the X server headless. I copied it at the end of this email. In the xml file of the container I have: <console type='pty'> <target type='lxc' port='0'/> </console> <console type='pty'> <target type='lxc' port='1'/> </console> So the error now is: Fatal server error: xf86OpenConsole: VT_ACTIVATE failed: Invalid argument This error occurs because the X server tried to do an ioctl(/dev/tty1, VT_ACTIVATE) on /dev/tty1 that is not a tty, it's a link to /dev/pts/0. I tried to reply type='lxc' by type='serial' but I got the same error. I think that if I can provide an access to the real /dev/tty1 I will be able to run the X server in the container... Can someone confirm me if it is possible to do it (I mean give an access to /dev/tty1 to the container) or if I'm going in the wrong direction to achieve my goal (that is to start a X server in the container (headless or not)? Thanks for your help, Regards, Guillaume