When I go to Yast in Suse 11 and click on graphics and monitor to change resolution, the system will go to console screen and give a login prompt. Before I can do anything, it'll return to the Yast display without bringing up the graphics and monitor screen.

The monitor is a Samsung T220 and the graphics card is ATI HD 3450. The default resolution from the hardware specs (and set at the install) says 1024* 768. Hardware specs also says the monitor is generic brand.

Should I manually modify xorg.conf? What all do I need to set? Here is one setting I found on the internet but I don't know if I need more in the xorg.conf.

Example in xorg.conf from internet:

Section "Monitor"
Identifier "Monitor0"
UseModes "Modes0"
VendorName "Samsung"
ModelName "SyncMaster T220"
Option "DPMS"
HorizSync 30-81
VertRefresh 56-75
EndSection

Section "Modes"
Identifier "Modes0"
### # 1680x1050 59.95 Hz (CVT 1.76MA) hsync: 65.29 kHz; pclk: 146.25 MHz
Modeline "1680x1050" 146.25 1680 1784 1960 2240 1050 1053 1059 1089 -hsync +vsync
### # 720x400 59.55 Hz (CVT) hsync: 24.83 kHz; pclk: 22.25 MHz
Modeline "720x400" 22.25 720 744 808 896 400 403 413 417 -hsync +vsync
### # 256x341 59.09 Hz (CVT) hsync: 21.09 kHz; pclk: 6.75 MHz
Modeline "256x341" 6.75 256 264 288 320 341 344 354 357 -hsync +vsync
EndSection

The optimum resolution is 1680*1050.

So should I manually edit the above into the xorg.conf file?
Is there a way to get Yast to bring up the set-up screen for display/graphics/monitor?

Thank you in advance for looking at this post.
May