Are you using a graphics enabler? If so, which framebuffer are you injecting?
Out of personal curiosity, couldn't you have just kept your original 6770 BIOS and injected a 5770 BIOS at boot time using the AtiRom switch with the ROM in the /Extra folder named as "1002_67xx_<subven_id>.rom ?
The 6770 has been pretty much hit or miss from what I've been reading. I've a 6770M and have gotten a framebuffer to load but I'm at a point where I need to go in and modify the sense_id in the ATI6000controller.kext in order to get the output to show on my laptop display (right now the display through HDMI comes out garbled).
Perhaps all you need to do is try attaching a monitor to any other display connection on your card. If that works, then it's just a matter of modifying the sense id in which case you'd be in business.
LancerlotMember Since 08 Jan 2011
Offline Last Active Aug 06 2012 01:06 AM
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