https://bugs.freedesktop.org/show_bug.cgi?id=27314

--- Comment #27 from Ortwin Glück odi@odi.ch 2011-01-13 11:19:41 PST --- Tried on the iMac11,2 and seeing no difference. Find the dmesg debug output (with that patch) and a lot more info on the site mentioned in comment 25. I am not even sure if the drivers configures the right pll/encoder/transmitter etc.