On some panels you end up with all of:
- No range descriptor
- No description of physical connectivity
- Native panel size mode in standard timings list

In principle you're supposed to use the timings for that mode from the DMT
spec, but in practice the DMT spec has timings for both 1920x1200 normal
and 1920x1200RB, and the standard timing field gives you no way to
distinguish.  And, of course, the non-RB timings don't fit in a single
DVI link.