Hi,
I have a gigabyte h67 board with hdmi, dvi and vga ports and after editing the table the system seems to work fine but, some time later the screen freezes and I have to reboot. Just before the fail I get the message described at first post
10/10/11 11:47:03,000 kernel: stampWait: Overflowed checking for stamp 0x6d0744 on Main ring: called from
10/10/11 11:47:03,000 kernel: timestamp = 0x6d0740
10/10/11 11:47:03,000 kernel: **** Debug info for apparent hang in Main graphics engine ****
................
..............etc
This happens with dvi and hdmi ports.
Editing the table works cause I can boot fine using macbook pro 8,1 smbios, but sooner or later the screen freezes.
I also tried with macmini 5,1 and 5,3 smbios with original driver and boots fine but it happens the sames later the same error.
Can someone help me?
thanks