A team member recently reported that the HP Pavilion dv7 model with a Hybrid graphics AMD 6700M HD and Intel coniguration is now fully supported in Linux by the recently released AMD graphics driver version 12.1:
http://support.amd.com/us/gpudownload/linux/Pages/radeon_linux.aspx
Hybrid graphics setup is now fully working, with switching from low power to high performance on demand and including suspend/resume support.