Yes, iam booting with intel-gpu and nvidia-gtx970 card activated. There is a picture on the intel screen. If i disable the intel gpu in the bios, there is no output on the nvidia screen. I try to ssh to the machine, with disabled intel-gpu. I have a modiefied Bios in the GTX970. Could this be the answer? I disabled the Fan on the gtx970 under 50C. But everything works on Windows10 and kernel 4.5.0 with nouvau driver.