Black/Dark Screen after waking from sleep
I have a brand new 15" Macbook Pro, 2.3 GHz, Intel Core i7 processor, 16 GB RAM, Mavericks.
After the latest firmeware update, when the computer comes out of sleep state, the screen remains dark... not so dark as to indicate that there is nothing there... but a very dark blue/almost black, making it impossible to see anything.
If I plug my VGA dongle in, it flickers on for a moment, but quickly returns to the dark state. No keystrokes change anything. The computer seems to be functioning normally otherwise. The volume up/down produces the expected chirps. The only way to fix it is to force a shutdown and then restart.
I have set the power management settings to never sleep for the time being, but I can't seem to find a fix. One post suggested restarting in safe mode to clear the cache and then shut down/restart normally. This did not resolve the issue. https://discussions.apple.com/thread/5515610?answerId=23632225022#23632225022
I also tried repairing permissions, but that didn't help at all.
Finally, I logged in as Guest and this was NOT a problem in the guest account. It resumed its normal state when coming out of sleep state.
Ideas?
MacBook Pro with Retina display, OS X Mavericks (10.9), 2.3 MHz, Intel Core i7, 16 GB RAM