cant get tv out working when i have sli mode enabled

[4ccmusic]

Is this just me but when i enable sli mode i cant access tv out. When sli is disable i can send out video to the tv

i am running 2 msi NX6600GT-TD128E on a giga GA-K8NXP-SLI 639 -nforce drivers nviida 7180 nvida display drivers

i've tried diffent nvida chipset and display drivers with no luck

chris