KVM Switch resolution problem

Hello everybody.
I have a problem with resolution. I’m using kvm switch and get only 1024x768. Monitor native resolution is 1360x768 and everything is O.K. if I connect PC directly to monitor. I tried to configure 50-monitor.conf file but opensuse didn’t start after that, I have to return old 50-monitor.conf file. Just to mention, I resolve this problem on Ubuntu 12.04 editing xorg.conf file.
So I need help configuring that file (or files). I have integrated Intel graphic (G31 chipset Intel GMA 3100).
Any help would be appreciated.