Quote:
Originally Posted by ChristianP
The login screen is a bug specific of model with the 9400 chipset (Apple bug). If you have a dual GPU machine, you can switch to use only the 9600 card (disable automatic graphics switching in Energy Saver and reboot). This should fix the issue, but unfortunately you could experience other issues (relate to the same bug).
We do hope to have a patch from Apple soon.
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On my MBP OSX 10.7.1 (9400M/9600M GT) I don't have "automatic graphics switching" under "Energy Saver" settings.
However, I have under Graphics:
( ) Better battery life
(X) Higher performance
For now I've removed the drivers and dropped back to two monitors as even running in high performance mode still has issues with the keyboard, performance and drag 'n drop weirdness.