1280x1024 @ 86Hz is the default in Dapper but gives an unquiet display. I'm sure my 19' monitor should be Res:

1024x768 but i can't change the defaults in Screen Resolution.

My eyes are vibrating. What should i do?

Dapper probably setup a few screen resolutions, with one as the default. You can cycle through the settings (and hopefully find one kinder to your eyes) with:

ctrl+alt+numpad+ or ctrl+alt+numpad- (that's control + alt + [numpad minus sign] or control + alt +[numpad + sign] to try the various settings).

I don't know enough about Ubuntu to know what other tools are provided to change screen resolution. The hardware detection programs determine the resolutions your monitor are capable of. Then the config files are written. That's where the ctrl+alt+[numpad+ or -] comes in; to cycle through the resolutions set by the hardware config during installation.

Unless you have very good eyes, they should not vibrate at 86Hz on a CRT.

Please post make/model of your graphics card and monitor and the sections device, monitor and screen from the xorg.conf file.

Contrary to the Ubuntu scrn res aplet, my monitor tells me the present res is 60hz.

Monitor is Dell P990 UltraScan Color Monitor.

Horizontal scan range 30 kHz to 96 kHz
Vertical scan range 48 Hz to 120 Hz
Optimal preset resolution 1024 x 768 at 75 Hz or 85 Hz
Highest preset resolution 1600 x 1200 at 75 Hz
Highest capable resolution 1600 x 1200 at 75 Hz

I understand my task is to find and edit the xorg.conf then include some of the above data.

nnjond

Could you please post the version of Linux you are using? It would also be helpful to know what graphics adapter you have?

ed-j