monitor blinking

Hello to everybody.
I have a strange problem,when i’m running Linux,or any Linux LIVD CD distro.
I installed 2 days ago OpenSuse 11.1 ,and when i set the native resolution which is 1920 x 1200 ,the monitor start to blink every 30-40 seconds,for about half second it’s getting black and then back to normal
I tried Knoppix Live CD ,Mandriva 2008 Live CD ,Opensuse 11.1 Live CD ,but still the same.
The monitor it’s okay,in any Windows version that doesen’t happent.
Even if i run in Linux a smaller resolution than the native one,it’s everythink okay.
I have DVI-DVI cable.Could that be the problem? Shall i try with DVI-VGA ?
I just changed the monitor 2 weeks ago,but when i used the 20" one ( now i have Samsung T240HD) there was never a problem with blinking.
Please , if you have any idea ,help me.
Thanks in advance.

Nobody can help me ?I don’t understand why,when i chane the cable and i put DVI (videocard) to VGA (monitor) everything it’s ok.
When i have DVI-DVI,my monitor blinks.I would like to leave the DVI-VGA cable,but everytime when i restart my PC,i have to auto adjust the image,cause the letters are not centered.
You think that DVI-HDMI would help?Is there no chance to make it work with DVI-DVI?