I just installed an out of the box debian distribution (from http://cdimage.debian.org/debian-cd/7.6.0/amd64/iso-cd/) on a Haswell. However, the graphics X.org driver doesn't support intel Haswell chipset. It supports previous versions of intel chipset such as SandyBridge, and IvyBridge.
Does anyone out there know where could I get the latest xorg driver that supports HSWULT? Thank you, Alexandra.