Denny H
Level 1 (0 points)

Q: NO SIGNAL ON MY MONITOR AFTER MY COMPUTER SLEEPS

Once I am finish working on my Mac, it will fall asleep and 9.5 times out of 10 when I return, the two monitors that I have connected to it say no signal, so I am forced to shut the computer down manually and restart it. Upon restarting, the monitors work great. I am under the impression that when I return to the computer and move the mouse or touch the keyboard, the computer should wake up. Any advice? Thanks,

Denny

Mac G 5, Mac OS X (10.4)

Posted on Nov 21, 2013 8:08 AM

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Denny H

Q: NO SIGNAL ON MY MONITOR AFTER MY COMPUTER SLEEPS

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  • by Kenichi Watanabe,

    Kenichi Watanabe Kenichi Watanabe Nov 22, 2013 3:56 AM in response to Denny H
    Level 8 (38,485 points)
    Mac OS X
    Nov 22, 2013 3:56 AM in response to Denny H

    It sounds like the Mac is waking up (since you need to "shut the computer down manually and restart it"), but the displays are not.  This forum category is for the PowerPC-based iMac.  iMacs can only connect one external display, so do you have a Power Mac G5?

     

    In System Preferences Energy Saver pane, what happens if you set Compuer sleep to Never and Display sleep to the desired setting?  If the computer itself does not go into sleep mode, do the displays turn back ON when you move the mouse or press a key?