screen frequency

When i am at the log in screen, it does not allow me to change the frequency. I need it changed. It has the high pitch squeal. Once logged in, it is fine due to me changing my user preference.

The preferred mode can be set within /etc/X11/xorg.conf ‘Monitor’ section.

Mine for reference:

Section “Monitor”
Option “CalcAlgorithm” “XServerPool”
DisplaySize 331 207
HorizSync 40-60
Identifier “Monitor[0]”
Option “PreferredMode” “1280x800”
VendorName “IBM”
VertRefresh 50-65
UseModes “Modes[0]”

ok, next question… is that in terminal?
I am fresh from windows and am used to GUI.
I have used terminal before but am VERY new to it…

run sax2 from the console - put 3 in the GRUB prompt when you boot and press esc once grub has initiated the boot, login as root at the prompt run sax2 and select your monitor type. there are more types than you can shake a stick at, and if all else fails, IIRC, there are some vesa standard types you can use too.

Yes, from the graphical desktop you can open a terminal window.

To view the contents of xorg.conf via CLI:

cat /etc/X11/xorg.conf

To edit (if using KDE) you can do

kdesu konqueror /etc/X11/xorg.conf

I use a CLI editor called pico, useful if editing at runlevel 3.

i am using the gnome… i will open terminal up and let you know…

As NigmaToolin suggested, it is likely that you monitor is not set correctly. This can be adjusted graphically by launching sax2 (via menu) and changing monitor to suit. You’ll need to restart X after the changes are made.

found it and done.

Learned a number of things tonight.
Thanks for the help.