Display driver issue

Hi guys,

I am using OpenSUSE 12.3 with the following motherboard Digilite DL-AD2550B. Even though my monitor supports 1366x768 it is showing only 1024x768.Is this a problem with display driver.

My graphic card details

00:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor D2xxx/N2xxx Integrated Graphics Controller [8086:0be2] (rev 0b)
Subsystem: ASRock Incorporation Device [1849:0be2]
Kernel driver in use: gma500
Thanks in advance