Asus P7P55D-E motherboard loose ps2 keyboard and mouse after some minutes

I have change my motherboard. Now my ps2 keyboard and mouse is lost if working with it after some minutes…
There is no message in syslog…
This seems to be a problem with this motherboard only because I used opensuse 11.2, 12.3 without any problems on old motherboard
After chaning MB and upgraded to leap nothing helps (on 12.3 and 11.2 same efect)
Connecting an usb keyboard and mouse will work…

The strange thing is, that in win7 it works without any problems, so this seems to be a driver problem not hw damaged

System: opensuse leap 42.1
MB: Asus P7P55D-E

Any idea how to track or how to restart some stuff?
I have read about problems in ubuntu with ibus but not found any ibus server running on leap?