1
vote
0answers
305 views

Black rectangle covers up most of screen, after disconnecting external display

I connected my MacBook Air to an external projector (using a Mini DisplayPort to VGA adaptor) to give a Keynote presentation, enabled screen mirroring, gave my talk, then disconnected from the ...
1
vote
0answers
215 views

Any way to compare Thunderbolt config in picky iMac 21.5“ and happy MacBook Air 11”

Having tried to debug a really annoying 21.5" iMac for a day now, I'd appreciate any hints. The scenario goes like this: We got an iMac 21.5"(Mid-2011) for an auditorium and plugged it in through an ...
2
votes
3answers
6k views

What adapters work from Thunderbolt to HDMI?

My new MacBook Pro uses Thunderbolt to connect a monitor. My monitors have all HDMI or VGA plugs. So I was looking for an Thunderbolt to HDMI adapter in my favorite shop. But I can't really find one. ...