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

My Mac keeps going to sleep on its own. It usually runs for about a minute or two, then it will forcibly sleep itself.
Keeper of the Purple Twilight wrote on :

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?

Steve Hix replied on :

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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?

Keeper of the Purple Twilight replied on :

On 2005-12-16 01:46:33 -0600, Steve Hix sehix@redacted.invalid said:

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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?

Howard S Shubs replied on :

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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?

Warren Oates replied on :

In article howard-F5D0DA.07205416122005@redacted.invalid, Howard S Shubs howard@redacted.invalid 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.

Jim replied on :

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.

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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?

Jerry Kindall replied on :

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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.

Keeper of the Purple Twilight replied on :

On 2005-12-16 09:32:33 -0600, Jim jimmi3REMOVE@redacted.invalid 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.

Keeper of the Purple Twilight replied on :

On 2005-12-16 11:56:06 -0600, Jerry Kindall jerrykindall@redacted.invalid said:

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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.

Steve Hix replied on :

In article 2005121601510516807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid wrote:

On 2005-12-16 01:46:33 -0600, Steve Hix sehix@redacted.invalid said:

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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...

Keeper of the Purple Twilight replied on :

On 2005-12-16 14:36:01 -0600, Steve Hix sehix@redacted.invalid said:

In article 2005121601510516807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid wrote:

On 2005-12-16 01:46:33 -0600, Steve Hix sehix@redacted.invalid said:

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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.

Jerry Kindall replied on :

In article 2005121612252875249-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid wrote:

On 2005-12-16 11:56:06 -0600, Jerry Kindall jerrykindall@redacted.invalid said:

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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.

Steve Hix replied on :

In article 2005121617301716807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid wrote:

On 2005-12-16 14:36:01 -0600, Steve Hix sehix@redacted.invalid said:

In article 2005121601510516807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid wrote:

On 2005-12-16 01:46:33 -0600, Steve Hix sehix@redacted.invalid said:

In article 2005121600224916807-no@redacted.invalid, Keeper of the Purple Twilight no@redacted.invalid 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.

Savageduck replied on :

On 2005-12-15 22:22:49 -0800, Keeper of the Purple Twilight no@redacted.invalid 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

Keeper of the Purple Twilight replied on :

On 2005-12-16 21:47:53 -0600, Savageduck <lencsgt@redacted.invalid{NOSPAM}lightspeed.net> said:

On 2005-12-15 22:22:49 -0800, Keeper of the Purple Twilight no@redacted.invalid 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.

Howard S Shubs replied on :

In article warren.oates-27C925.07381816122005@redacted.invalid, Warren Oates warren.oates@redacted.invalid 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

Richard Tomkins replied on :

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.

  1. Let go of the power button.

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

"Keeper of the Purple Twilight" no@redacted.invalid wrote in message news:2005121600224916807-no@redacted.invalid

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
Wayne C. Morris replied on :

On Sat, 17 Dec 2005 02:53:35 -0600, Howard S Shubs wrote (in article howard-A1F585.03533517122005@redacted.invalid):

In article warren.oates-27C925.07381816122005@redacted.invalid, Warren Oates warren.oates@redacted.invalid 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?