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Why does my Mac keep going to sleep on its own?

Message #1 - Posted 2005/12/16 - Keeper of the Purple Twilight

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill

Message #2 - Posted 2005/12/15 - Steve Hix

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

Have you tried resetting the firmware?

Thrown out /Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist?

Message #3 - Posted 2005/12/16 - Keeper of the Purple Twilight

On 2005-12-16 01:46:33 -0600, Steve Hix said:

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

Have you tried resetting the firmware?

Two things: 1) how do I do that, and 2) how much of my computer's settings will I have to reset afterward?

"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill

Message #4 - Posted 2005/12/16 - Howard S Shubs

Previously, Keeper of the Purple Twilight wrote:

What is happening here? Has anybody else had this problem? How can I fix it?

Have you ever thought of taking your Mac out and helping it have fun? Maybe browsing more interesting web sites?

A few minutes ago I attempted to give a flying fsck, but the best I could do was to watch it skitter across the floor. (Anthony de Boer)

Message #5 - Posted 2005/12/16 - Warren Oates

Previously, Howard S Shubs wrote:

Have you ever thought of taking your Mac out and helping it have fun? Maybe browsing more interesting web sites?

I had this problem with Wife 1.0 and to a certain extent with Wife 2.0.

I've since upgraded to Wife 3.2 (it's a long story) and things are much better now.

W. Oates
"I thought I was the last son of Krypton,
but you people keep popping up." -- Clark Kent

Message #6 - Posted 2005/12/16 - Jim

Don't know the difference between Panther and Tiger but on my 10.3.9, the Sleep settings are in Preferences/Energy Saver. I've got mine set to Never.

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

Jim from Hilton Head
Remove the obvious to email me direct

Message #7 - Posted 2005/12/16 - Jerry Kindall

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

Sounds like a temperature problem to me. Are the computer's vents blocked by something? If not, it could be one of the fans has died or the fan controller or temperature sensor inside the computer is malfunctioning.

Jerry Kindall, Seattle, WA <http://www.jerrykindall.com/>

Send only plain text messages under 32K to the Reply-To address. This mailbox is filtered aggressively to thwart spam and viruses.

Message #8 - Posted 2005/12/16 - Keeper of the Purple Twilight

On 2005-12-16 09:32:33 -0600, Jim said:

Don't know the difference between Panther and Tiger but on my 10.3.9, the Sleep settings are in Preferences/Energy Saver. I've got mine set to Never.

So do I.

"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill

Message #9 - Posted 2005/12/16 - Keeper of the Purple Twilight

On 2005-12-16 11:56:06 -0600, Jerry Kindall said:

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

Sounds like a temperature problem to me. Are the computer's vents blocked by something?

No.

"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill

Message #10 - Posted 2005/12/16 - Steve Hix

Previously, Keeper of the Purple Twilight wrote:

On 2005-12-16 01:46:33 -0600, Steve Hix said:

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

Have you tried resetting the firmware?

Two things: 1) how do I do that,

Open Firmware reset:

Hold down command-option-o-f at boot until a white screen appears, and then type the following at the prompt (press return after each line):

reset-nvram
set-defaults
reset-all

and 2) how much of my computer's settings will I have to reset afterward?

It will be back to the out-of-the-box default configuration in terms of basic global hardware settings, such as timezone settings, sleep, etc.

Passwords and local preferences should be unchanged.

I'd throw out the power configuration preference file first, and if it doesn't work after rebooting...

Message #11 - Posted 2005/12/16 - Keeper of the Purple Twilight

On 2005-12-16 14:36:01 -0600, Steve Hix said:

Previously, Keeper of the Purple Twilight wrote:

On 2005-12-16 01:46:33 -0600, Steve Hix said:

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

Have you tried resetting the firmware?

Two things: 1) how do I do that,

Open Firmware reset:
Hold down command-option-o-f at boot until a white screen appears, and then type the following at the prompt (press return after each line):

reset-nvram
set-defaults
reset-all

and 2) how much of my computer's settings will I have to reset afterward?

It will be back to the out-of-the-box default configuration in terms of basic global hardware settings, such as timezone settings, sleep, etc.

hmm. I tried resetting nvram and all, and it didn't actually change anything (plus I still had the problem).

Passwords and local preferences should be unchanged.

I'd throw out the power configuration preference file first

That didn't work either.

"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill

Message #12 - Posted 2005/12/16 - Jerry Kindall

Previously, Keeper of the Purple Twilight wrote:

On 2005-12-16 11:56:06 -0600, Jerry Kindall said:

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

Sounds like a temperature problem to me. Are the computer's vents blocked by something?

No.

Then you're in for a trip to the repair shop, probably.

Jerry Kindall, Seattle, WA <http://www.jerrykindall.com/>

Send only plain text messages under 32K to the Reply-To address. This mailbox is filtered aggressively to thwart spam and viruses.

Message #13 - Posted 2005/12/16 - Steve Hix

Previously, Keeper of the Purple Twilight wrote:

On 2005-12-16 14:36:01 -0600, Steve Hix said:

Previously, Keeper of the Purple Twilight wrote:

On 2005-12-16 01:46:33 -0600, Steve Hix said:

Previously, Keeper of the Purple Twilight wrote:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

Have you tried resetting the firmware?

Two things: 1) how do I do that,

Open Firmware reset:
Hold down command-option-o-f at boot until a white screen appears, and then type the following at the prompt (press return after each line):

reset-nvram
set-defaults
reset-all

and 2) how much of my computer's settings will I have to reset afterward?

It will be back to the out-of-the-box default configuration in terms of basic global hardware settings, such as timezone settings, sleep, etc.

hmm. I tried resetting nvram and all, and it didn't actually change anything (plus I still had the problem).

Passwords and local preferences should be unchanged.

I'd throw out the power configuration preference file first

That didn't work either.

Then the problem is somewhere else. Sadly.

Message #14 - Posted 2005/12/16 - Savageduck

On 2005-12-15 22:22:49 -0800, Keeper of the Purple Twilight said:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

Have you opened your system preferences? Once there you can check your "Energy Saver" settings. I suggest trying the "never" setting on the slider to see if the problem persists.
Good Luck,
Duck

Message #15 - Posted 2005/12/16 - Keeper of the Purple Twilight

On 2005-12-16 21:47:53 -0600, Savageduck said:

On 2005-12-15 22:22:49 -0800, Keeper of the Purple Twilight said:

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix it?

Have you opened your system preferences? Once there you can check your "Energy Saver" settings. I suggest trying the "never" setting on the slider to see if the problem persists.

I always had it set that way.

"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill

Message #16 - Posted 2005/12/17 - Howard S Shubs

Previously, Warren Oates wrote:

I've since upgraded to Wife 3.2 (it's a long story) and things are much better now.

Now you've got me wondering about the minor updates. WTF is up with those? :-D

A few minutes ago I attempted to give a flying fsck, but the best I could do was to watch it skitter across the floor. (Anthony de Boer)

Message #17 - Posted 2005/12/17 - Richard Tomkins

Resetting the SMU (System Management Unit)

1. Unplug all cables from the computer, including the power cord.

2. Wait 10 seconds.

3. Plug in the power cord while simultaneously pressing and holding the power button on

the back of the computer.

4. Let go of the power button.

5. Press the power button once more to start up your iMac G5.

"Keeper of the Purple Twilight" <no@spam.invalid> wrote in message news:2005121600224916807-no@spaminvalid...

This is really starting to irritate me. I've tried things like resetting the parameter RAM, but to no avail. (I'm running OSX 10.4.3 on a first generation iMac G5)

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself. I can wake it up, but it will just go to sleep again after about a minute (maybe less).

I've tried restarting, but that doesn't help. (It DOES cause the fan to suddenly get louder for a couple of seconds. Sometimes that happens also when the computer wakes up again - the fan will suddenly rev up and get louder, then calm down.)

What is happening here? Has anybody else had this problem? How can I fix

it?

--
"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill

Message #18 - Posted 2005/12/17 - Wayne C. Morris

On Sat, 17 Dec 2005 02:53:35 -0600, Howard S Shubs wrote (in a previous article):

Previously, Warren Oates wrote:

I've since upgraded to Wife 3.2 (it's a long story) and things are much better now.

Now you've got me wondering about the minor updates. WTF is up with those? :-D

Cosmetic surgery?

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