Mac Pro upgraded to Lion, now screen won't work...

csiCJ

macrumors newbie
Original poster
Jun 23, 2010
15
0
NY/NJ
Hi, I'm having a problem with my Mac Pro after installing OSX Lion this morning. I was hoping someone would be able to help. After installing Lion, my Philips monitor won't work. My monitor says I need to change the resolution to 1280x768 but when I connect my Mac Pro to my second monitor and try and change the settings for the Philips monitor, there is no option for that resolution.

I'm using an early 2009 Mac Pro. The Philips monitor is connected through VGA and a VGA to DVI adapter.

I had no problems with SL; and I have no idea why it is not working with Lion.


If you could help me fix it, I would be so happy.
 

Attachments

Last edited:

minifridge1138

macrumors 65816
Jun 26, 2010
1,067
76
I just want to make sure I understand your situation.

You have two monitors A and B.

Do you try to use both at the same time?

A goes from VGA on the Mac to DVI on the display with an adapter.

A gives the error message about resolution from your screen shot.

B works just fine. Using B you can see the properties for A, but you can't set it to the resolution in the screen shot. Correct?
 
Comment

csiCJ

macrumors newbie
Original poster
Jun 23, 2010
15
0
NY/NJ
I just want to make sure I understand your situation.

You have two monitors A and B.

Do you try to use both at the same time?

A goes from VGA on the Mac to DVI on the display with an adapter.

A gives the error message about resolution from your screen shot.

B works just fine. Using B you can see the properties for A, but you can't set it to the resolution in the screen shot. Correct?
Correct! B is not viable as an everyday monitor, I had to use a TV screen. Just incase you were wondering. It was just to see if I could get A working again.
 
Comment
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.