Problem with the resolution of the video in opensuse 13.1

Hi,
I installed opensuse 13.1 on a machine but I have a problem with the video. I can not change the video resolution it is set to 640x480 resolution, but I can not choose other resolutions. Why do I have this problem? is it a problem of opensuse 13.1?
It is not a hardware problem!

No, it is likely to be a driver or hardware recognition issue. The best place to start is to supply the relevant details about your graphics hardware with one of the commands below

/usr/sbin/hwinfo --gfxcard
/sbin/lspci -nnk |grep VGA -A2

If you are capable, examine /var/log/Xorg.0.log for messages that will yield a better picture of the issue. Our normal suggestion is to upload it to SUSE Paste (set the ‘Delete After’ value to a sensible period) and post the link to it here.