Spent around 2 hours to set new resolution for Ubuntu 14.04 and when come to know the right way it took only 5 minutes. So, writing this post so that it can save someone else's time. Following are the steps to add 1280 x 1024 screen resolution in Ubuntu 14.04 1) Create /etc/X11/xorg.conf file with following content: Section "Monitor" Identifier "Monitor0" Modeline "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync EndSection Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" SubSection "Display" Modes "1280x1024_60.00" EndSubSection EndSection Section "Device" Identifier "Card0" Driver ...