errx(EXIT_FAILURE, "PAM: %s\n", pam_strerror(pam_handle, ret));
/* Initialize connection to X11 */
- if ((conn = xcb_connect(NULL, &screen)) == NULL)
- err(EXIT_FAILURE, "xcb_connect()");
+ if ((conn = xcb_connect(NULL, &screen)) == NULL ||
+ xcb_connection_has_error(conn))
+ errx(EXIT_FAILURE, "Could not connect to X11, maybe you need to set DISPLAY?");
if (!dont_fork) {
/* In the parent process, we exit */