Hello. I am attempting to configure my Ubuntu 12.4 (Precise) Dell M6700 with AMD Firepro M6000 Video card as dual monitor with my Samsung 2333HD monitor. When I try to set the resolution, I get various errors stating "required virtual size does not fit available size" or "requested position/size for CRTC 148 is outside the allowed limit" I've attempted to used all the various display resolutions the configuration tool offers but not appear to work. I have my laptop monitor set to 1920x1080 (16:9). Any thoughts on what I can do to get these two displays to work as split monitor?