I recently installed 10.10.1 on my old pc but which as both integrated(Intel GMA 4500MHD) and dedicated graphics card(ATI HD4330)
if i disable from BIOS the integrated one the screen freezes at PCI configuration begin meanwhile the OS keeps loading (i can heard a "tic" when the audio kext is loaded) and if i keep both cards powered on the OS starts but with the wrong resolution and no HW acceleration even if it sees both cards as in the attachment. Does someone has any idea how to fix it?
I've already tried to use npci=0x2000/0x3000 with no changes
I put also a HW report as attachment