hey guys,
ok, so i purchased this early build macbook pro from someone off of craigslist.
she basically never used it, cause' nothing was updated including the firmware.
so as soon as i turn it on, i hear the annoying buzz.
on the old firmware, add/remove mirror widget would solve the issue.
stupid me goes and updates to the latest firmware
after firmware is updated, add/remove mirror widget does not solve the buzzing issue
however, if you add/remove mirror widget, and then put your mbp to sleep, and then wake it up, the buzzing is gone.
of course it's an extra step of sleep/wake after the add/remove mirror widget, and you have to do it after ever boot, but it does solve the problem
so once again, this is only for early build mbp and updated firmwares.
1) turn on mbp
2) add/remove mirror widget
3) sleep/wake
buzzing should be gone
i'm happy, hope this helps someone else
-Yi Chen