computer awakening query

tom koehler wrote on :

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse. It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Thank you for your time. tom koehler

AD replied on :

On Jan 30, 8:04pm, tom koehler tvnospamkoeh...@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse. It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

It's fully addressed in the mangler's thread. If you can't read it in its full glory search for "the influx of vista rejects from redmond" part

David Ryeburn replied on :

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8,

No, you're not. A G4 is a PPC CPU, and 10.5.8 is the last system it can run. Mac OS 10.6 and higher only will run on Intel Macs.

Tell us what you really have, and then maybe someone can help.

David

tom koehler replied on :

On Mon, 30 Jan 2012 17:35:34 -0600, David Ryeburn wrote (in message david_ryeburn-E4600E.15353430012012@redacted.invalid):

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8,

No, you're not. A G4 is a PPC CPU, and 10.5.8 is the last system it can run. Mac OS 10.6 and higher only will run on Intel Macs.

Tell us what you really have, and then maybe someone can help.

David

ok, here's what the computer says I have. Thank you.

Model Name: iMac Model Identifier: iMac10,1 Processor Name: Intel Core 2 Duo Processor Speed: 3.06 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 3 MB Memory: 4 GB Bus Speed: 1.07 GHz

tom

tom koehler replied on :

On Mon, 30 Jan 2012 12:08:59 -0600, AD wrote (in message c68802f0-6d3f-46d1-a38a-ab2c3c9aaa42@redacted.invalid):

On Jan 30, 8:04pm, tom koehler tvnospamkoeh...@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse. It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

It's fully addressed in the mangler's thread. If you can't read it in its full glory search for "the influx of vista rejects from redmond" part

I'm sorry, I have Mr. Mangler flagged and I do not see his posts. tom

M. John Matlaw replied on :

tom koehler wrote:

On Mon, 30 Jan 2012 17:35:34 -0600, David Ryeburn wrote (in message david_ryeburn-E4600E.15353430012012@redacted.invalid):

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8,

No, you're not. A G4 is a PPC CPU, and 10.5.8 is the last system it can run. Mac OS 10.6 and higher only will run on Intel Macs.

Tell us what you really have, and then maybe someone can help.

David

ok, here's what the computer says I have. Thank you.

Model Name: iMac Model Identifier: iMac10,1 Processor Name: Intel Core 2 Duo Processor Speed: 3.06 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 3 MB Memory: 4 GB Bus Speed: 1.07 GHz

tom

I'm having the same problem. I originally thought it had to do with some printer software but lately I've begun to think it's related to eyetv. Just wondering if you're using eyetv. John

erilar replied on :

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse. It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Little puzzles can be very irritating 8-) My laptop is quite different and is Intel. I do not leave it on all the time, but once I turn it on in the morning, it has many opportunities to go to sleep while I'm doing other things. Every so often I come back to it and neither the Bluetooth mouse nor the keyboard will wake it up. I have to lean on its on/off switch to wake it up. I have no idea why it seems to sleep more deeply some times than others.

tom koehler replied on :

On Tue, 31 Jan 2012 12:14:10 -0600, erilar wrote (in message drache-607F98.12141031012012@redacted.invalid):

Little puzzles can be very irritating 8-) My laptop is quite different and is Intel. I do not leave it on all the time, but once I turn it on in the morning, it has many opportunities to go to sleep while I'm doing other things. Every so often I come back to it and neither the Bluetooth mouse nor the keyboard will wake it up. I have to lean on its on/off switch to wake it up. I have no idea why it seems to sleep more deeply some times than others.

Erilar, thank you for your response. Though not a solution, it is comforting to know that my situation is not unique. Thank you. tom

Jolly Roger replied on :

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse. It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Thank you for your time. tom koehler

I suspect the reason you aren't getting many answers is this type of question is asked fairly frequently here.

Do you have System Preferences > Bluetooth > Advanced > Allow Bluetooth devices to wake this computer enabled?

If you run /Applications/Utilities/Terminal, and enter this command, what is the output (if any)?:

 syslog | grep -i "wake reason"
Helpful Harry replied on :

In article drache-607F98.12141031012012@redacted.invalid, erilar drache@redacted.invalid wrote:

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse. It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Little puzzles can be very irritating 8-) My laptop is quite different and is Intel. I do not leave it on all the time, but once I turn it on in the morning, it has many opportunities to go to sleep while I'm doing other things. Every so often I come back to it and neither the Bluetooth mouse nor the keyboard will wake it up. I have to lean on its on/off switch to wake it up. I have no idea why it seems to sleep more deeply some times than others.

It's possible that you may be confusing real Sleep mode with the energy-saving Screen Dimming, but there are also actually three different Sleep Modes and the computer will go into Deep Sleep / Hibernate mode after a longer period of inactivity and will take longer to wake up from it. http://www.wesg.ca/2009/03/put-your-mac-into-a-deep-sleep/ http://hints.macworld.com/article.php?story=20061018014009924

Helpful Harry :o)

John Varela replied on :

On Tue, 31 Jan 2012 17:31:41 UTC, "M. John Matlaw" mjlaw@redacted.invalid wrote:

tom koehler wrote:

On Mon, 30 Jan 2012 17:35:34 -0600, David Ryeburn wrote (in message david_ryeburn-E4600E.15353430012012@redacted.invalid):

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8,

No, you're not. A G4 is a PPC CPU, and 10.5.8 is the last system it can run. Mac OS 10.6 and higher only will run on Intel Macs.

Tell us what you really have, and then maybe someone can help.

David

ok, here's what the computer says I have. Thank you.

Model Name: iMac Model Identifier: iMac10,1 Processor Name: Intel Core 2 Duo Processor Speed: 3.06 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 3 MB Memory: 4 GB Bus Speed: 1.07 GHz

tom

I'm having the same problem. I originally thought it had to do with some printer software but lately I've begun to think it's related to eyetv. Just wondering if you're using eyetv. John

I have an iMac 10,1 and an EyeTV HD. I do have the problem of the computer sometimes waking up in the middle of the night, but I don't think that has anything to do with the EyeTV. I have not had any problems waking the computer up.

One problem I do have is that I got replaced my old UPS with an APC Back-UPS Pro 2000. Ever since, I can't get the computer to go to sleep on command. It will go to sleep if allowed to just sit until the energy saver operates, but it won't go to sleep by pressing the power button. The screen goes black, after a few seconds the UPS clicks, and the computer wakes up.

tom koehler replied on :

On Tue, 31 Jan 2012 14:13:14 -0600, Helpful Harry wrote (in message HelpfulHarry-0102120913140001@redacted.invalid):

In article drache-607F98.12141031012012@redacted.invalid, erilar drache@redacted.invalid wrote:

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse.
It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Little puzzles can be very irritating 8-) My laptop is quite different and is Intel. I do not leave it on all the time, but once I turn it on in the morning, it has many opportunities to go to sleep while I'm doing other things. Every so often I come back to it and neither the Bluetooth mouse nor the keyboard will wake it up. I have to lean on its on/off switch to wake it up. I have no idea why it seems to sleep more deeply some times than others.

It's possible that you may be confusing real Sleep mode with the energy-saving Screen Dimming, but there are also actually three different Sleep Modes and the computer will go into Deep Sleep / Hibernate mode after a longer period of inactivity and will take longer to wake up from it. http://www.wesg.ca/2009/03/put-your-mac-into-a-deep-sleep/ http://hints.macworld.com/article.php?story=20061018014009924

Helpful Harry :o)

Thank you for your response and the information, H.H.

I was, to the best of my knowledge, putting the computer to sleep, via the sleep command in the drop-down menu under the apple. I have also sometimes used the sleep option by brief push of the power button on the back of the computer/screen.

By the information you have given, regarding "deep" sleep, the computere has been in that mode at night, when the rest of us are asleep, too.

In any of these cases, the computer still has had moments of apparent spontaneous wakefulness.

It is an interesting puzzle for me, and am looking for hints about what might cause this.

tom

erilar replied on :

In article HelpfulHarry-0102120913140001@redacted.invalid, HelpfulHarry@redacted.invalid (Helpful Harry) wrote:

In article drache-607F98.12141031012012@redacted.invalid, erilar drache@redacted.invalid wrote:

In article 0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehler tvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse.
It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Little puzzles can be very irritating 8-) My laptop is quite different and is Intel. I do not leave it on all the time, but once I turn it on in the morning, it has many opportunities to go to sleep while I'm doing other things. Every so often I come back to it and neither the Bluetooth mouse nor the keyboard will wake it up. I have to lean on its on/off switch to wake it up. I have no idea why it seems to sleep more deeply some times than others.

It's possible that you may be confusing real Sleep mode with the energy-saving Screen Dimming, but there are also actually three different Sleep Modes and the computer will go into Deep Sleep / Hibernate mode after a longer period of inactivity and will take longer to wake up from it. http://www.wesg.ca/2009/03/put-your-mac-into-a-deep-sleep/ http://hints.macworld.com/article.php?story=20061018014009924

Helpful Harry :o)

In other words, computers, like people, have more than one kind of sleep 8-) I never knew that. Thanks!

M. John Matlaw replied on :

On 1/31/12 3:01 PM, Jolly Roger wrote:

In article0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehlertvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse. It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Thank you for your time. tom koehler

I suspect the reason you aren't getting many answers is this type of question is asked fairly frequently here.

Do you have System Preferences> Bluetooth> Advanced> Allow Bluetooth devices to wake this computer enabled?

If you run /Applications/Utilities/Terminal, and enter this command, what is the output (if any)?:

  syslog | grep -i "wake reason"

I realize this was addressed to the OP but I'm wondering if I might hone in here. Shut down my system. Booted. Waited for the Brother printer center thing to flash across the screen. Waited for the backup partition to do it's change to backup logo icon. Fired up TextEdit to cut and select the terminal command. Clicked on Sleep from the drop down menu. Sure enough, less than a minute later, mirabile dictu, the screen re-awakens. Entered Teminal, pasted the above command and got a long list. First few lines: Thu Jan 26 00:22:46 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 01:48:19 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = OHC2 Thu Jan 26 15:57:44 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 16:09:48 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 16:20:53 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 16:32:19 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 16:41:39 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = PWRB

They're almost all like that save for two others. Fri Jan 27 17:57:01 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = RTC and Mon Jan 30 12:55:04 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = PWRB OHC2

Any hints here as to what's happening? Thanks, John

Jolly Roger replied on :

In article jgc24l$i84$1@redacted.invalid, "M. John Matlaw" mjlaw@redacted.invalid wrote:

On 1/31/12 3:01 PM, Jolly Roger wrote:

In article0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehlertvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse.
It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Thank you for your time. tom koehler

I suspect the reason you aren't getting many answers is this type of question is asked fairly frequently here.

Do you have System Preferences> Bluetooth> Advanced> Allow Bluetooth devices to wake this computer enabled?

If you run /Applications/Utilities/Terminal, and enter this command, what is the output (if any)?:

  syslog | grep -i "wake reason"

I realize this was addressed to the OP but I'm wondering if I might hone in here. Shut down my system. Booted. Waited for the Brother printer center thing to flash across the screen.

Yikes. A printer driver that displays a useless logo animation on your screen each time you reboot sounds very Windows-esque to me. No thanks! It also makes me wonder what else that freaky driver is doing under the covers. I also wonder if it might have something to do with your sporadic wake events due to some USB interaction with the scanner...

Waited for the backup partition to do it's change to backup logo icon.

What?

Fired up TextEdit to cut and select the terminal command. Clicked on Sleep from the drop down menu. Sure enough, less than a minute later, mirabile dictu, the screen re-awakens. Entered Teminal, pasted the above command and got a long list. First few lines: Thu Jan 26 00:22:46 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 01:48:19 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = OHC2 Thu Jan 26 15:57:44 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 16:09:48 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 16:20:53 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 16:32:19 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = EHC2 Thu Jan 26 16:41:39 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = PWRB

They're almost all like that save for two others. Fri Jan 27 17:57:01 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = RTC and Mon Jan 30 12:55:04 M-John-Matlaws-Mac-mini kernel[0] : Wake reason = PWRB OHC2

Any hints here as to what's happening?

EHC stands for Enhanced Host Controller. For those messages, a USB or wireless (WiFi or Bluetooth) device on the USB bus asked the computer to wake up.

If this is truly the first such message around the time of the wake event, your first suspects would be any device connected to the computer via Bluetooth or USB.

. . .

RTC stands for Real Time Clock. For those messages, a scheduled wake event triggered the wake-up. Such events are usually created with System Preferences > Energy Saver > Schedule settings, but also may be created programmatically by software you have installed on the machine such as EyeTV, various backup software packages, and so on.

PWRB stands for Power Button. For those messages, the computer woke up because someone pressed the physical power button.

M. John Matlaw replied on :

On 2/1/12 2:16 PM, Jolly Roger wrote:

In articlejgc24l$i84$1@redacted.invalid, "M. John Matlaw"mjlaw@redacted.invalid wrote:

On 1/31/12 3:01 PM, Jolly Roger wrote:

In article0001HW.CB4C37E20100C304F04075D0@redacted.invalid, tom koehlertvnospamkoehler@redacted.invalid wrote:

I'm back with another little question... likely nothing serious, but a puzzle I can't answer.

I'm running a G4 iMac, sys 10.6.8, corless keyboard and cordless mouse. It is my habit to leave it on, and just put it to sleep whenever I'm not using it - day or night. Often, it will just decide to wake up, with no action on my part - sometimes almost right after I have told it to Sleep. On the other hand, when I want to use it, and tap the "any" key, or jostle the mouse, there have been times when it seems like Computer isn't paying attention, and I have to jab it again.

This isn't the end of the world, and life will go on if I do not learn what is going on, but I am curious about this little puzzle.

Thank you for your time. tom koehler

I suspect the reason you aren't getting many answers is this type of question is asked fairly frequently here.

Do you have System Preferences> Bluetooth> Advanced> Allow Bluetooth devices to wake this computer enabled?

If you run /Applications/Utilities/Terminal, and enter this command, what is the output (if any)?:

   syslog | grep -i "wake reason"

I realize this was addressed to the OP but I'm wondering if I might hone in here. Shut down my system. Booted. Waited for the Brother printer center thing to flash across the screen.

Yikes. A printer driver that displays a useless logo animation on your screen each time you reboot sounds very Windows-esque to me. No thanks! It also makes me wonder what else that freaky driver is doing under the covers. I also wonder if it might have something to do with your sporadic wake events due to some USB interaction with the scanner...

Waited for the backup partition to do it's change to backup logo icon.

What?

I've got a partitioned drive attached via firewire. One of thew partitions serves as a backup (time machine). On the desktop that partition's icon, after initially showing up with a firewire logo, changes to a time machine logo.

Fired up TextEdit to cut and select the terminal command. Clicked on Sleep from the drop down menu. Sure enough, less than a minute later, mirabile dictu, the screen re-awakens. Entered Teminal, pasted the above command and got a long list. First few lines: Thu Jan 26 00:22:46 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = EHC2 Thu Jan 26 01:48:19 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = OHC2 Thu Jan 26 15:57:44 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = EHC2 Thu Jan 26 16:09:48 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = EHC2 Thu Jan 26 16:20:53 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = EHC2 Thu Jan 26 16:32:19 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = EHC2 Thu Jan 26 16:41:39 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = PWRB

They're almost all like that save for two others. Fri Jan 27 17:57:01 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = RTC and Mon Jan 30 12:55:04 M-John-Matlaws-Mac-mini kernel[0]: Wake reason = PWRB OHC2

Any hints here as to what's happening?

EHC stands for Enhanced Host Controller. For those messages, a USB or wireless (WiFi or Bluetooth) device on the USB bus asked the computer to wake up.

If this is truly the first such message around the time of the wake event, your first suspects would be any device connected to the computer via Bluetooth or USB.

. . .

RTC stands for Real Time Clock. For those messages, a scheduled wake event triggered the wake-up. Such events are usually created with System Preferences> Energy Saver> Schedule settings, but also may be created programmatically by software you have installed on the machine such as EyeTV, various backup software packages, and so on.

PWRB stands for Power Button. For those messages, the computer woke up because someone pressed the physical power button.

Ah well. I guess I'm back to where I started. Both eyetv and the printer are connected via usb. I've got a bluetooth keyboard and and a bluetooth mouse but the problem didn't start appearing till after the usb stuff was attached. The only puzzler is the physical power button message. I didn't touch the sucker. Anyway, thanks for the assist. John