This How-to is for people who want to change the refresh rate and/or resolution for their monitor

**i have only tried this on nvidia cards

**use this info at your own risk, i will take no responsibility for damaged hardware

First we want to get the modeline for our desired resolution and refresh rate, to do this we head to

At the top of the page is a table, input the settings you want into it, for example, i want to run my monitor @ 1280x1024 85refresh rate, so i enter into the first box marked X: 1280 in the second box marked y: i enter 1024 and the 3rd box i enter 85 (my desired refresh rate)

then i click the Generate modeline button and the output is as follows:
# 1280x1024 @ 85.00 Hz (GTF) hsync: 91.38 kHz; pclk: 159.36 MHz
Modeline "1280x1024_85.00" 159.36 1280 1376 1512 1744 1024 1025 1028 1075 -HSync +Vsync

open a new terminal and type the following:
sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf_backup
sudo gedit /etc/X11/xorg.conf

in the xorg.conf document find:

Section "Monitor"

and at the bottom of this section copy and paste the modeline you got from the website you visited, mine looks like this:

Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
Modeline "1280x1024_85.00" 159.36 1280 1376 1512 1744 1024 1025 1028 1075 -HSync +Vsync

now save the file and restart x by pressing ctrl alt and backspace

if it takes you to a command prompt just log in and type startx

your monitor should now be running at your chosen settings

note: this is my first how-to so i would appreciate any feedback on it from you experts, i am still a linux newb but this is a small problem i managed to figure out and hope it can help others like the community has helped me.