I installed Ubuntu 15.10 64b in UEFI mode on my Asus F555UB (i5 6200u Skylake, nVidia 940M) and in the field where you enter the name of your pc was this:
I clicked next and saw this errors under the progress of the installation
PCIe Bus Error: severity = Corrected, type=Physical Layer, id=00e5(Receiver ID)
DEVICE [8086:9d15] error status/mask 00000001/00000000
The installation was successful and I can boot into Ubuntu but my virtual terminal is flooded with error messages which I believe are the same/similar to the errors I got during installation (I am not sure because the errors appear and change so quickly I can't read them).
I guess it is caused by the version of SMBIOS (the version in my laptop is 3.0) and I'd like to ask if this really is caused by the SMBIOS.
(one of the solutions I googled is pcie_aspm = off, but I don't want to start typing commands into my laptop and create new problems before I read your answers)