Comment # 19 on bug 69694 from Marco

Created attachment 94030 [details]
Modified xorg.conf with two gpus

Yes, still an issue with:
mesa git as of today;
kernel 3.13.2 with VCE patches on top.

Without xorg.conf X doesn't come up: I only have a blank screen with caret
cursor on upper left corner.
Using a modified Xorg with the two cards now works: before it never worked.