Hi all, On one of my client's laptops (Windows 7), the attached code detects the second display monitor (get-display-count returns 2), but prints exactly the same values for the location and size of the two displays. i.e. The top-left coordinate and size values returned ((0,0) and 1024 x 768) are the same for both monitors. This effectively maps the second monitor underneath(?) the main monitor, making it inaccessible to Racket. In this particular case the second monitor is a TV connected through the laptop's s-video port. Windows itself sees the two displays and is configured to extend the desktop over both of them and 'Identify monitors' works as expected. At least one other program can see and use the TV without problems. Racket has no problems seeing and using a second display monitor on this same laptop when that second monitor is a video converter box connected through the laptop's VGA port. Also Racket has no problems seeing and using a TV as a second display monitor when connected to my (Vista) laptop's HDMI port. What can I do to troubleshoot this problem? I have searched the source for both 'get-display-left-top-inset' and 'monitor' and only find something relevant in .html and .js document files. Where in the source should I be looking? Thanks in advance for any help. Cheers, Kieron. **** #lang racket/gui (printf "display-count:~a\n" (get-display-count)) (printf "display-depth:~a\n" (get-display-depth)) (for ([m (in-range 0 (get-display-count))]) (let-values ([(mx my) (get-display-left-top-inset #f #:monitor m)] [(mxwob mywob) (get-display-left-top-inset #t #:monitor m)] [(mw mh) (get-display-size #f #:monitor m)] [(mwfs mhfs) (get-display-size #t #:monitor m)] ) (printf "monitor:~a (~a ~a) (~a ~a) (~a ~a) (~a ~a)~n" m mx my mxwob mywob mw mh mwfs mhfs) ) )