Can't use full screen on second display.

It does, but in this case it's the second checkbox if you open the preferences 😉

(on the Interface tab, which is the automatically selected one.)

Note that you might have to restart VLC in order for it to take effect. At least I have to do that for any settings I change in VLC. I wonder if that's normal or a specific bug in my setup?

Thanks for the info. I'm bumping this up because it's been driving me nuts at home, but this past week it drove me nuts at work.

I was working at a Conference with a Nobel Peace Prize Laureate, and students were trying to show their presentations to the Laureate, and each of them ran in to problems with this scenario. I ended up taking out my personal laptop and running media for an hour so the kids could focus on their presentations.

But they were embarrassed, they felt bad, and their teachers were ticked off. Of course I got chewed out because I offered to help and was therefore only visible target for their frustration, but trying to explain this to people in the heat of the moment is terrible and I feel bad for all the people who have stood up to make a presentation, only to be flustered and freaked out by this implementation.

Is it as easy as mirroring for 5 minutes? Absolutely. For me. But kids & teachers don't know about this crap and they probably shouldn't have to. It should just work. Especially this. Imagine all the people this has screwed over as they stood in front of potentially thousands of people, only to have their tech fail them in an unreasonable way.

I needed to get that out there. It was bothering me. Not for me, I know how to work around it, but the kids... The kids man... ;)

Seriously. Is waiting for Mountain Lion all we can do? Because the people I'm talking about probably won't update right away anyways and therefore will be susceptible for an even longer period of time. Bummer.

This is seriously bugging me too. Like many others I know, one of the reasons I bought Lion was because I would always have some app stretched out on my second display, but the control over it was pretty limited.

Was really looking forward to the one-click space/fullscreen function, but after getting into the system I see that a second display is pretty much useless now. If Apple think they are going to shift the most expensive 27" display on the planet with this hiccup in 10.7, they've got another thing coming.

That's bad news for users of classroom computers who use the Mac display while sending a presentation out to an external projector. If it's application specific, there is hope so long as the developer doesn't follow Apple's implementation of full screen in Lion.

One step forward... two steps back it seems.

I'd also like to register my outrage at this very important feature for those of us who use external displays. Come on! What use is having two monitors but only have one of them full screen at once and have one of them show absolutely nothing?

I cling to hope that Apple hasn't fully implemented full screen yet and that better control will be forthcoming. That said, I also used to believe in Santa Claus and the Easter Bunny!

Seriously, it is an issue for those who use multiple screens - It's reduced functionality. This is one of the (multiple) reasons why I've recommended against upgrading to Lion at my work place. We can't stop our students from using it on their own laptops but if they do, they'll have to live with mirroring mode when they hook up to our classroom projectors.

I recently screened our students' video work for their 'End-of-Year' festival directly from my Snow Leopard Mac using QT Player X in full screen on the projector while using my built-in display to monitor it and the system. No longer being able to do that will mean I will be sticking to SL at work for some time as well.

I'm hoping this is properly addressed soon...

I noticed the same thing too with Quicktime. What the **** is the point of plugging in a 40" TV (that worked perfectly with SL) so that I can watch movies on my 15" MBP display? Quicktime has always come second to VLC, but now it is literally useless.

Yes, same here. What a disappointment for those of us who have invested in external displays. Surley, this will be remedied?

In this case, it's appears less a QuickTime X issue and more a Lion, full screen issue. Full screen needs work.

I think I found something! Make sure that whatever program you're using is the one you're clicked on, (iTunes), then try Command+T. I don't know what that command is supposed to mean, but it brings the program in use to fullscreen on my external display.

Hopefully this helps!

No, that don't work for me.

Well, this is my first complaint about Lion. I agree. What is the point of the external monitor on my MBP 15" if, when I go to full screen, it shifts the app back to my MBP and leaves the monitor blank? Sounds like the tech guys @ Apple need to address this quickly.

Otherwise, I love the upgrade.

if they support having different mission control for each monitor, I think it would fix it. Imagine being able to mix and match your fullscreen apps independentlly in each display. I too am flabergasted at how fullscreen works ATM.

If you NEED your fullscreen app in your second display and don't care if you see it in your main display, then you can go into display preferences and make the main window your second monitor by dragging the toolbar to the new display in display arrangement.

you can also mirror your displays if you need to know what's going on in the other screen in a classroom environment.

This is still not a solution because the second screen becomes useless. I would definitely use the new spaces/mission control if each monitor could scroll through it's own set of fullscreen apps/desktops.