Problem with Radeon HD 7570

As mentioned above. Just bought a Radeon HD 7570. Doesnt work. The desktop never shows. All i see is a grey screen. I have to enter Haiku´s bootmenu and disable graphics driver. I have seen somewhere on this forum that this driver was supposed to be supported, thats why i bought the card.
So, any clues ?

This isn’t the right place to make bugreports.
Please use the bugtracker at