# actual system X configuration.
my $socket = fork_xserver($keep_xdummy_output, $displaynum,
'./Xdummy', ":$displaynum", '-config', '/dev/null',
- '-nolisten', 'tcp');
+ '-configdir', '/dev/null', '-nolisten', 'tcp');
push(@displays, ":$displaynum");
push(@sockets_waiting, $socket);
$displaynum++;