Vga output not working in lion

I upgraded to Lion yesterday and noticed that I could not longer use my Macbook Pro with a projector. I've tried several different projectors (classrooms at the university), and none of them work. When I plug the VGA cable into my adapter, the Macbook Pro display changes briefly to blue and then back to normal. The projector display eventually goes to dark blue, indicating it doesn't detect a video input.
I'm using the same mini-DisplayPort to VGA adapter that worked previously in Snow Leopard on these same projectors. The only thing that's changed is Lion vs. Snow Leopard.
Has anyone else experienced this?

This May be a VGA support issue:
I had similar issues with a brand new Mac Mini Server withLion. I thought I could save some money and use an existing monitor (SamsungSyncmaster). While the computer was in use the wireless keyboard, wirelessmouse and monitor operated OK.
However, as soon as the monitor went to sleep there was noway to reactivate the computer. I went through each device and scenario,without success, I even connected a wired keyboard and there was no response.
I reviewed the responses and discussions over the web, andtook a chance and changed my HDMI/VGA connection to a HDMI/DVI connection to anewer monitor that supports HDMI and DVI.
Problem solved. Although Apple sells the connector HDMI/VGA,you must be warned the results are undesirable.
Hope this is helpful.

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Hello everybody,
i've got an A200 PSAELE and I am trying to connect it to an external Monitor via VGA.
The external Monitor is a Medion 19" Widescreen with a Resolution of 1440x900.
The problem is, that I am not able to get the external display to work.
I just get a "no signal" message on my external monitor.
I tried various things, tried another VGA cable, another monitor (Benq FP93G X) and another driver.
I am using Windows 7 Beta ans also tried to get it to work using Windows Vista Home Premium & Windows XP.
In the "resolution settings", I tried using the "recognize displays" button.
When i use it, there is a second image of a display displayed like a box.
In this box, there is the following text: "Antoher display couldn't be recognized".
Regardless of the settings I use (clone, span, ...) I can't get any image onto my second screen.
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I also tried switching to the external monitor via "Fn + F5", but nothing happens onto the second screen.
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Thanks in advance,
StarGeneral
Message was edited by: StarGeneral

Hi,
I tested two more things:
-> I downgraded to the Toshiba Windows Vista Home Premium 32bit drive, which works on Windows 7 as well. There in the Catalyst Control Center I've got the "Displays Manager" section, which I don't have with the release drivers.
But even there, when I click on "dectect displays", nothing happens.
When I press the Windows-key and "P", a display opens, where I can select how to use the external VGA out, but when I e.g. select "clone", the resolution on the laptop-screen changes, but there still is no signal on the external monitor.
-> I tested the laptop with a real CRT analog monitor, but I didn't get any further.
But I have got the sneaking suspicion, that I've got a conflict with the HDMI / VGA version of the A210 laptop.
I know that there are a few laptops with an HDMI output and a few with a VGA output.
I checked my audi-devices and found an entry named "HDMI-Audio-Out".
Isn't that strange, because my laptop doesn't have HDMI connector?
Probably I've got a Mainboard/Graphics-card combo, which has got a HDMI port and no VGA output and which was designed for a HDMI-A210?
Could something like this be possible?
Thanks in advance,
StarGeneral

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Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
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Moshiour

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http://apple.stackexchange.com/questions/21691/ukelele-generated-custom-keyboard -layouts-not-working-in-lion
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I created a custom keyboard layout with Ukelele (http://scripts.sil.org/ukelele) in Snow Leopard (idea is to generate scandinavian letters with Alt-key, otherwise have a pretty much standard U.S. layout). After the upgrade, the old installed (to ~/Library/Keyboard Layouts) layout wasn't working.
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[EDIT: Removed unrelated stuff]
UPDATE 2011/08/15:
@Tom:
Copied your keylayout (it naturally ended up in my Junk folder):
midgard (01:55) >ls -l ~/Library/Keyboard\ Layouts/MongolianQWERTY.keylayout-rw-r--r--@ 1 sjl staff 44536 Mar 13 2008 /Users/sjl/Library/Keyboard Layouts/MongolianQWERTY.keylayout
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UPDATE 2011/08/17:
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Tom,
I think I love you.
That absolutely did it! Thanks so much!
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Vga output not working in lion

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