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My problem seems to be a flawed live-cd iso. I made my iso to a usb stick with mediawriter on a fedora26 system on Aug23 and it passed the security checks. I tested it and installed it on my hard drive. In checking the live cd again it was clear that it did not detect my laptop display, listing it as unknown.

I borrowed a fed28 live cd usb stick made a few months ago from a colleague, and found immediately that the laptop display was recognized. This was confirmed with xrandr.

I reinstalled my system from my colleague's stick and the monitors are working fine. This also fixed failures I had experienced with the suspend function.
This needs to be reported as an installation bug.