In fact I know that my VGA has 1366x768 resolution as it always was in Windows 8.1. After I switched to Ubuntu I can't go any higher than 1024x768 through Display program.
This is how I try to force it, and what the results are:
xrandr --newmode "1366x768_60.00" 85.25 1368 1440 1576 1784 768 771 781 798 -hsync +vsync
xrandr --addmode VGA1 1366x768_60.00
xrandr --output VGA1 --mode 1366x768_60.00
Well, the image doesn't actually capture the result. my primary (right screen) overlaps to my secondary (left screen) where I see part of my primary on the secondary screen.
How to do this correctly?