I upgraded two ThinkPads, a W520 and an X220 Tablet, from Windows 8 to Windows 8.1. The W520 has a second display, an NEC LCD2070NX. I had previously calibrated all three displays in Windows 8 using X-Rite's Eye-One Display 2 and i1Match software.
After upgrading to Windows 8.1 RTM, none of my color profiles on either machine are working. All displays appear to be using default system profiles, and when I switch profiles in Color Management nothing happens.
I tried re-running the i1Match calibration on both machines to create new profiles, but those don't work either.