"The Arrangement tab of Displays preferences is hidden..."
When connecting my Thunderbolt Display to my MacBookPro
Model Identifier: MacBookPro6,1
Boot ROM Version: MBP61.0057.B0C
SMC Version (system): 1.57f17
I do not get a display on the Thunderbolt.
I have checked the Diplay Settings and the only 2 tabs are DISPLAY and COLOR
I do not have an ARRANGEMENTS TAB
When I look for the ARRANGEMENTS TAB I get the message
"The Arrangement tab of Displays preferences is hidden because you only have a single display attached to this computer."
I have the Thunderbolt connected to the MagSafe port and to the Thunderbolt port and the Thunderbolt is plugged in to a power source.
I have tried the MacBook Pro EFI Firmware Update 1.9 and get this message:
"This software is not supported on your system."
Can someone help me or direct me to another discussion
Thank You!!
MacBook Pro, Mac OS X (10.6.8)