Duel Screen on linuks (sic:... dual screen)

you just need two monitors and these two commands:... debian@osiris:~$ xrandr Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 8192 x 8192 DVI-I-1 connected primary 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.02*+ 75.02 1152x864 75.00 1024x768 75.08 60.00 800x600 75.00 60.32 640x480 75.00 60.00 720x400 70.08 HDMI-1 disconnected (normal left inverted right x axis y axis) VGA-1 connected 1280x1024+1280+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.02*+ 75.02 1152x864 75.00 1024x768 75.08 60.00 800x600 75.00 60.32 640x480 75.00 60.00 720x400 70.08 debian@osiris:~$ xrandr --output DVI-I-1 --mode 1280x1024 --rate 60 --output VGA-1 --mode 1280x1024 --rate 60 --right-of DVI-I-1