Comment # 7 on bug 98037 from Will Lewis

Recent test results:
Kernel 3.13.6 - DVI output after boot, but with vertical, inch-wide blue-green
stripes.  No HDMI output.  X unusable on either screen.
Kernel 4.0 - DVI output after boot.  No HDMI output.  X works on DVI only.
Kernel 4.7.2 - No DVI or HDMI output after boot.  X works on DVI only.