Easy peasy!
xrandr --newmode $(gtf 1280 1024 60 | sed -ne 's/"//g;s/ Modeline //p') xrandr --addmode VGA1 1280x1024_60.00
hints & tricks in no particular order
Easy peasy!
xrandr --newmode $(gtf 1280 1024 60 | sed -ne 's/"//g;s/ Modeline //p') xrandr --addmode VGA1 1280x1024_60.00