HT3131: Mac notebooks: How to use your computer in closed clamshell (display closed) mode with an external displayLearn about Mac notebooks: How to use your computer in closed clamshell (display closed) mode with an external display
Currently Being ModeratedMar 13, 2012 8:03 AM (in response to Dina)
When you are using the MBP in clamshell mode, there is nothing on the built-in screen for the external screen to mirror, so it presents the default desktop image. Open System Preferences > Desktop and Screen Saver and select the desktop image or folder of images you want it to use.
The desktop will also revert to the default image if you've selected an image or images from an iPhoto Library, you have more than one iPhoto Library, and the currently active iPhoto Library (the last one you opened) is not the one containing your chosen image. If you don't have more than one iPhoto Library, this situation will never arise, and you can ignore this paragraph.
Currently Being ModeratedMar 13, 2012 8:49 AM (in response to eww)
Thanks, eww, for the speedy response. Actually, I don't use iPhoto for my images. So, if I'm making the correct inferences, it looks like I have to tell it where to find the preferred image. With the Lion upgrade it lost the connection (because it's not in my iPhoto library)?
Currently Being ModeratedMar 13, 2012 11:54 AM (in response to Dina)
The connection was lost, yes. I don't know the reason and won't guess at it. Create a new connection, and see whether it sticks.
Currently Being ModeratedMar 14, 2012 5:28 AM (in response to eww)
Interestingly enough, I hadn't had the chance yet to give your suggestion a try, and after a restart it is now behaving normally. I did another permissions repair yesterday, maybe that fixed it. Hmmph.
The other thing is that I don't plug everything in until it's completely started up. I'm using a KVM switch, to share the monitor/USB keyboard/speakers with a pre-Intel G5--so I plug into the MBP a monitor cable, usb for keyboard, headphone jack for speakers, then FW and USB external HDs--but only after I've logged myself in. It's a little different routine with Lion, not having to put the MBP to sleep, just hit the KVM switch, close it and it switches over. Much nicer.
Anyway, all seems to be well now. THANK YOU for your advice.
Currently Being ModeratedNov 28, 2012 4:08 PM (in response to Dina)
I had the same problem, but a simple restart fixed it.