I have a laptop with a built-in screen and an attached monitor.When I start a Google's video Hangout and share my desktop, I would like to be able to share only the attached screen, but I don't know how.Right now I have two monitors: LVDS1 corresponds to my laptop's screen, which is configured as the secondary screen and DP1 which is my primary screen. But the problem still remains if I change my laptop's screen to be the primary screen.$ xrandrScreen 0: minimum 320 x 200, current 3286 x 1468, maximum 8192 x 8192LVDS1 connected 1366x768+1920+700 (normal left inverted right x axis y axis) 344mm x 194mm   1366x768      60.06*+   1024x768      60.00     800x600       60.32    56.25     640x480       59.94  VGA1 disconnected (normal left inverted right x axis y axis)HDMI1 disconnected (normal left inverted right x axis y axis)DP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 475mm x 267mm   1920x1080     60.00*+   1280x1024     75.02    60.02     1152x864      75.00     1024x768      75.08    60.00     800x600       75.00    60.32     640x480       75.00    60.00     720x400       70.08  Whenever I start sharing my desktop in the Hangout, only the built-in (smaller) screen is shared. Best thing would be to be able to chose which one to share, but if not, how could I share only the attached (bigger) screen?I bet Google's Hangout is looking for a configuration file to choose which screen to share, but don't know which file it is.NOTEUsing Fedora 20, x86_64, Linux 3.15.10-200, GNOME Shell 3.10.4-8, Firefox 31.NOTE 2Using Google Chrome makes Google Hangouts share both screens at the same time instead of only the laptop's screen, which I think is even worse. Still trying to find out how could I choose which screen to share.
Sharing your desktop with Google Hangouts, dual monitor and GNOME Shell
gnome shell;display