Minicom (and serial terminals in general) have no means to display graphics. You need an X server for that. There are at least two ways to do that: run the X server on BB itself, displaying to its HDMI; or use the X server on your host machine by connecting to the BB with "ssh -X" instead of over serial. X protocol will happily work over a network connection.
On Thursday, June 19, 2014 3:09:39 AM UTC-7, hari wrote: > > Hello, > I have done export DISPLAY=.0. Still the error exists. > I have a doubt isn't it possible to display the execution of beagleboard > program using usb-serial cable on my laptop???? > Or is it necessary to use HDMI to DVI-D cable and connect to a monitor to > execute an opencv program??? Pls help me in this regard. > Awaiting your valuable response. > > Thanks, > Hari > > > On 4 June 2014 15:12, liyaoshi <[email protected] <javascript:>> wrote: > >> #export DISPLAY=:0 >> >> >> 2014-06-04 15:23 GMT+08:00 hari <[email protected] <javascript:>>: >> >>> Hello, >>> >>> I have copied opencv programs into sd card and put it on my >>> beagleboard-xm ubuntu and ran it as root on minicom. I have already >>> installed opencv,libwebcam,etc and compiled a sample c program-hello.c >>> It works well. >>> *But when I compiled an opencv program to display an image it shows >>> "Gtk-warning: cannot open display"*. >>> Can anyone please find a solution for this. >>> After solving this problem only I can go forward. Awaiting your response >>> regarding this. >>> >>> Thanks. >>> Hari >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected] <javascript:>. >>> >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/Iwlv_LsZdu0/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
