Displays wont go to sleep

[dlewis23]

I'm having a problem with my displays and them going to sleep.

It just started yesterday and I can't figure out why. The computer will go to sleep just fine after 15 min of no activity, but the display will not, it just sits at a black screen.

If I put the computer to sleep my self using command + option + eject the display goes to sleep as it should.

Does anyone why this happens or how to fix it.

I have a Mac Pro 1,1 with a 7300GT.

Thanks

 

[iBookG4user]

If you go to System Preferences>Energy Saver, what does it say under Display Sleep?

 

[dlewis23]

If you go to System Preferences>Energy Saver, what does it say under Display Sleep?

Both sliders are at 15 minutes.

 

[iBookG4user]

Both sliders are at 15 minutes.

If you set the Display Sleep to 1 minute and then wait a minute, does the display go to sleep? And if you have another account (or created another account), does the same problem occur in the other account?

 

[dlewis23]

If you set the Display Sleep to 1 minute and then wait a minute, does the display go to sleep? And if you have another account (or created another account), does the same problem occur in the other account?

It does the same problem for both setting the display sleep to 1 minute, and a test user account.

 

[iBookG4user]

It does the same problem for both setting the display sleep to 1 minute, and a test user account.

That's odd, so it is either a system wide problem or a problem with the display. Do you have another display that you can test with the computer?

 

[dlewis23]

That's odd, so it is either a system wide problem or a problem with the display. Do you have another display that you can test with the computer?

At the moment I do not have another display to test with the computer, but Ive used it on my Macbook pro and have never had a problem with the display going to sleep on its own.

 

[iBookG4user]

At the moment I do not have another display to test with the computer, but Ive used it on my Macbook pro and have never had a problem with the display going to sleep on its own.

If you've tested it on the MacBook Pro since it started to act up and it worked correctly, then something must have happened on the Mac Pro to cause this change. What programs/updates have been recently installed on the Mac Pro?

 

[dlewis23]

If you've tested it on the MacBook Pro since it started to act up and it worked correctly, then something must have happened on the Mac Pro to cause this change. What programs/updates have been recently installed on the Mac Pro?

The only thing I recently installed was iLife 09 and iPhone dev tools (xcode, iPhone sim. ect.)