To resolve the parse_vt_settings /dev/tty0 permission denied error when running startx on the Vecow EAC-6000 or ECA-4000 as a non-root user, you can configure the Xwrapper.config file. Create or edit the file at /etc/X11/Xwrapper.config and add the following lines:

allowed\_users=anybody
needs\_root\_rights=yes

Alternatively, ensure that your user account is added to the tty and video groups, or manage session permissions by ensuring a display manager or seat management service like elogind is properly running.