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Monitor doesn't "wake up" on system startup

Message #1 - Posted 2006/08/08 - Devin M

I have a PowerMac g5 dual1.8, and recently started having a problem where the monitor is 'sleeping,' and when I turn on the computer it doesn't wake up from that sleep. The only way I get an active screen is if I power-cycle the monitor a few seconds after the startup chime. Anyone else have a problem like this?

Message #2 - Posted 2006/08/09 - Hans Aberg

Previously, Devin M wrote:

I have a PowerMac g5 dual1.8, and recently started having a problem where the monitor is 'sleeping,' and when I turn on the computer it doesn't wake up from that sleep. The only way I get an active screen is if I power-cycle the monitor a few seconds after the startup chime. Anyone else have a problem like this?

I have noticed that under Mac OS X.4, the screen (in digital mode) is often pitch black for a considerably amount of time as though it was dead, but I do not have to do anything get it working, just wait: it is just the OS not feeding it with video info. Are you sure you haven't just waited long enough?

Hans Aberg

Message #3 - Posted 2006/08/09 - Devin M

The machine boots up completely, and luckily I was able to fuddle through logging in and shutting down the computer. more recently, I ssh into it with my blackberry and do a reboot via cmd line. i've also noticed that longer than normal black screen. I'm tempted to hook it up using VGA, but I really don't want to A. waste money on a VGA cable; B. if it works, it's such a waste of the DVI cable I spent good money on.

The monitor DOES work. But at startup, there's a point where I have to power cycle the monitor at just the right time when the DVI kicks in (i'm assuming...)

any other ideas?

Hans Aberg wrote:

Previously, Devin M wrote:

I have a PowerMac g5 dual1.8, and recently started having a problem where the monitor is 'sleeping,' and when I turn on the computer it doesn't wake up from that sleep. The only way I get an active screen is if I power-cycle the monitor a few seconds after the startup chime. Anyone else have a problem like this?

I have noticed that under Mac OS X.4, the screen (in digital mode) is often pitch black for a considerably amount of time as though it was dead, but I do not have to do anything get it working, just wait: it is just the OS not feeding it with video info. Are you sure you haven't just waited long enough?

--
Hans Aberg

Message #4 - Posted 2006/08/10 - Hans Aberg

Previously, Devin M wrote:

The machine boots up completely, and luckily I was able to fuddle through logging in and shutting down the computer. more recently, I ssh into it with my blackberry and do a reboot via cmd line. i've also noticed that longer than normal black screen. I'm tempted to hook it up using VGA, but I really don't want to A. waste money on a VGA cable; B. if it works, it's such a waste of the DVI cable I spent good money on.

The monitor DOES work. But at startup, there's a point where I have to power cycle the monitor at just the right time when the DVI kicks in (i'm assuming...)

I have no idea, except for what I said: the digital screen may look dead, even though it isn't. You may also hook up the VGA before start, not permanently, but just to see what it looks like. I think it should have some color on it during the same times the digital one looks dead. If the VGA has the same problem, it is some problem with your computer, not the monitor.

Hans Aberg

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