Without "X" useflag for imagemagick, awesome will produce an error while setting background image in startup period. why: awesome calls 'display' command for setting background image. And here is the error message for imagemagick: display: delegate library support not built-in `' (X11) @ error/display.c/DisplayImageCommand/1908. So I tried to rebuild imagemagick with "X" useflag and it works.
in cvs.