Thanks for bcc9's method, it's really awsome.But I have similar problem that could not be resolved this way.
I have a Thinkpad T420, which has only LVDS and displayport.
I edited the AppleIntelSNBGrpahicsFB.kext, removed the last three lines and kept LVDS only.
However my computer still often get stuck(not every 5 seconds, but quite often, sometimes even cause the whole system halt), showed the log like:
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: WaitForStamp: Overflowed waiting for stamp 0x2f3 on Main ring: called from
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: timestamp = 0x02cc
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: **** Debug info for apparent hang in Main graphics engine ****
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: ring head = 0x00600eb4, wrap count = 0x 3
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: ring tail = 0x00000110 ring control = 0x00003801 enabled, auto report disabled, waiting, semaphore not waiting, length = 0x004 4KB pages
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: timestamps = 0x02cc
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: Semaphore register values:
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: VRSYNC: (0x12044) = 0x2cc
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: BRSYNC: (0x22040) = 0x0
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: RVSYNC: (0x 2040) = 0x0
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: BVSYNC: (0x22044) = 0x0
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: RBSYNC: (0x 2044) = 0x0
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: VBSYNC: (0x12040) = 0x0
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: Looks like Main ring is stuck waiting on an event
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: After attempt to clear wait condition = 0x00003001 no longer waiting
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: kIPEHR: 0x7a000003
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: kINSTDONE: 0xfffb
May 25 23:20:45 xs-MacBook-Pro-2 kernel[0]: kINSTDONE_1: 0x230003f
Any other possibilities that casue this problem?Anyone idea will be appreciated! Thank you all!
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#92 iLeopod Posted 22 August 2011 - 05:42 AM
InsanelyMac Sage
FAQ Team
366 posts
Gender:Male
Location:Germany
try
0000000: 0102 0200 1007 0000 1007 0000 ............
000000c: 0503 0000 0200 0000 3000 0000 ........0...
0000018: 0304 0000 0004 0000 0900 0000 ............
0000024: 0000 0000 0000 0000 0000 0000 ............
0000030: 0000 0000 0000 0000 0000 0000 ............
%
And don't forget to set smboard-id.
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gonggaolei
iTunes/Apple Store Content Access Problem. Content playback may be disabled on this computer. You can continue to use the machine, but you should contact an Apple support representative. ErrorCode: 88
发表于 2012-7-16 11:19 IP属地上海