I am running new 2011 Macbook Pro 15" with Mac OS X 10.6.7. I have my primary monitor running over thunderbolt/display port connection, and I'm able to see Rotate option for that monitor.
I'm running two other monitors (HP 24" and HP 20"), over two separate Plugable uga-2k-a with Display Link DL-195 chips. Neither one gives me an option to Rotate my displays. I have tried latest available drivers (27 April 2011 - 1.6) and the 1.7 beta 1 has been taken down right now due to bugs.
I have also tried Carlo's suggestion to use Command+Option keys while selecting Display options, but that doesn't work either.
Any suggestions for allowing me to rotate my displays?
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