Wrong refresh rate?

[red1776]

Hi gang,
Im having a problem with the 1280 x 1024 resolution on my monitor. any other resolution works fine. when i change it to 1280 x 1024 I get wavy flickering semi round lines on either side of the screen (kind of looks like a faint contour map). my first instinct was that the refresh rate was wrong so i set it high and low and no luck. its currently at the supported speed of 75Mhz. again it works fine at any other resolution, and is a supported res.

Any ideas?

Samsung SyncMaster 955DF
ATI HD 3650 1gb

 

[CCT]

Did you install the monitor driver or are you using Native drivers?

If you need the manual, try here;

http://downloadcenter.samsung.com/content/UM/200306/20030618135144015_BH59-00335J-05ENG-AN19JS.pdf

 

[red1776]

opps,
yeah thats a critical piece of info. I am using the monitor driver, latest one.

 

[CCT]

I have never used an ATI card so I'll bow out here after saying that you should ensure the GPU is talking nicely to the LCD, ie, refresh rates etc.

I imagine ATI has a settings panel like nVidia where these things are displayed/controlled.

 

[adweston]

Jeez, that's an old monitor.. What you'll probably find is that in reasonably short order other resolutions will start screwing up too. I found that with an old 21" Hitachi I used to have a long time ago. One resolution went, then others. Finally it died altogether.

 

[pyromaster114]

If it's an old monitor, it might just be screwing up at that resolution... don't ask me why but I had a monitor that worked great for a while, and then started to do something like this.
I got rid of it cause it heated up my room too much anyways and bought a nice LCD... no more problem lol.
(I also have a 100 pound paper weight in my closet lol)