Connection

Hi,
My old computer went out and I had to set up new. Configuration is Ubuntu 14.04 + K8200 + Repetier (latest). Connection starts fine with baud 250000, but movements are way too fast. Also Eeprom is empty, just zeroes.
I’ve understand that Linux can’t operate over 115200 baud. But with that it won’t work. It connects, but manual movements doesn’t work.
I tried to check basic install steps, but manual includes only assembly. I suspect that I’ve forgot some basic things…