In the 69xx series .. if you boot first IE: windows.. and latter reboot ( not shutdown) to OsX .. it load without have to make the sleep trick.
In the 7xxx series.. no matter if you have a cold or hot boot ( restart from windows) .. always you need to do the sleep trick.
The Radeon Bios Editor from TechPowerUp appears to be dead project with no 7000 support coming either
Hey guys I have the sleep with the button working. I am using the DSDTSE / Power Button hack and I have moved the NullCPUpower kext from /Extra/Extensions and I am using the HD 7750 in ML 10.8.0 with the ATI7000 kext from osx86.net and my card is showing up correctly, though I don't Framebuffer but I am pulling proper resolution and options for different resolutions.
This is an AMD 960T CPU. I am just going to try to check what I can do for the frame buffer. As I need to put XBMC and create a home theater so without FB I cannot play videos.
Well, try different framebuffers named after sushi, if none work, modify connector tables on a framebuffer named after sushi
but running it on anything other than 10.8.3 could cause any number of other issues so I wouldn't put too much effort into it until then