Time Machine Preferences breaks when I wake from sleep

I have recently started having a problem.
When I start my computer, everything is functioning fine. I am able launch System Preferences and open any preference pane and quit System Preferences and everything is fine.
When I put my computer to sleep and then wake it up, I have issues. If I open System Preferences, I can close it. If I click on Trackpad, I can close it. But if I click on Time Machine Preferences and try to quit System Preferences, it doesn't quit. If I try to Force Quit, I get the standard "this app isn't responding" error box.
I cannot quit System Preferences is any way. Force Quit does nothing and eventually the rest of my apps on my machine stop functioning. I have to hard reset my machine to get System Preferences back.
Anyone else seen this? I don't want to blame it on 10.5.6 but I think that this started happening after that.

So I have made a further discovery.
It is related to my non-Time Machine external hard drive. When it is connected I have the issue mentioned above, when it's not connected I have no problem. I re-formatted the drive and no longer have the issues with the System Preferences, but now, if I sleep, when I wake I can't shut down. It just hangs and I have to hard restart.
A couple of notes from the console log. When the "bad" drive is hooked up, I see the following message (multiple times when I wake up:
*kernel AppleYukon2: 00000000,00000000 sk98osx_dnet - recovering from missed interrupt*
Also, when I try to do the actual shutdown, I see this error:
*/usr/sbin/kdcmond[37] dnssd_clientstub read_all(3) failed 0/28 0*
So I feel like the issue is somehow connected to my eternal drive having a conflict with the wired network card. I am going to do some more tests.

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Time Machine "preparing backup" eternally upon wake from sleep

at a bit of a loss here...
iMac 24" (version which offered 7300GT as BTO option)
10.5.5 with all updates applied
LaCie 500 gig USB 2.0 drive directly attached.
Up until about two months ago, Time machine functioned fined. Then for some reason, the following started to happen. (no known reason, no software update related etc, that I know of)
scenario... Time Machine functions correctly EXCEPT when waking from sleep. If iMac wakes from sleep and attempts a backup immediately (e.g. more than one hour has passed), it gets stuck "preparing backup" forever. I've let it run overnight (actually as long as about 30 hours), it never stops. Finder and other programs become extremely non-responsive, machine is almost unusable. Literally, the only way out is to manually shut down external drive, with attendant warnings/errors.
What I've done:
1) deleted the time machine .plist file
2) erased, repartioned (as a single partition) external drive
3) started brand new time machine backup (takes about three hours)
At this point, time machine will backup up fine... I can force a successful backup, if I leave the machine running, at one hour it does a successful backup.
BUT, as soon as it goes to sleep, time machine is hosed.
The only workable method for using time machine is to turn the external drive and time machine off when not using it, and turn the whole shootin' match on to do what essentially becomes manual backups. These backup are fairly lengthy, as time machine also does lengthy "preparing backup", but they complete in about 30 minutes to one hour.
Given that time machine doesn't give mountable/cloneable backup, I'm probably going to go back to Carbon Copy Cloner. Still, I like the ease/regularity of Time Machine, and would use it if it works.
Any ideas?
thanks

It could be a number of things. There are lots of things that Time Machine does in order to "manage" backups -- apart from just copying data to the backup drive.
It has to manage the transition of hourly backups into daily backups and must also transition daily backups into weekly backups. Each time it does this it has to move a lot of data around. It also has to maintain indexes of everything so you can quickly find backups should you want to perform a restore.
I've also noticed that there are circumstances that can cause TM to question whether it can trust it's existing backup database... I've caught Time Machine saying that it needs to do a "deep traversal" of the backup (basically it wants to check and see what it really has) and this can take a very long time.
Still... 30 hours is an extremely long amount of time. I'm almost wondering if there's a problem with either your USB bus or your drive when they wake up such that you may be getting a huge number of retries on something that should have happened quickly.
I'd suggest you start the "Console" utility, select "All Messages" at the left, and then watch the messages being written to your log file. Not only does Time Machine log all of it's progress messages to the system.log (in more detail than you'd see in the Time Machine UI), but so do lots of other system processes. If you're getting USB bus problems the error messages would likely show up in the same log. I'm especially suspicious about non-TM related causes since you said you've already blown away your TM backups & preferences and started from scratch and you're still getting the problem.
Try re-creating your problem with the Console log messages being displayed and see if you can't see something in the log that would let you get a little closer to the root cause.
Regards,
Tim

10.4.7 kernel_task eats 70% of CPU only when computer wakes from sleep.

On my machine (FW 800), 10.4.7 caused: machine to slow perceptably after wake from sleep. Activity Monitor tells me kernel_task is consuming hundreds of times it's normal CPU cycles.
I installed a FRESH 10.4. Imported my files and folders. Upgraded all the Apple software EXCEPT 10.4.7 combo updater. The partition worked fine, before and after sleep. Upgraded using the 10.4.7 combo updates.
Again, kernel_task consumes 60-70% of CPU cycles after my Mac wakes from sleep. Note that it works fine when first rebooted.
As slow as it was, it was unusable. I reverted to 10.4.6 to get work done.

I have the very same problem on the same platform, except that I have 2 int. bootable disk drives. One boots 10.4.6 and has no problems at all. The other Boots 10.4.7 and operates perfectly, as far as I can tell from a few hours of use. It will continue to work just fine until I put it to sleep. On awakening, the Kernal Tasks CPU Usage jumps to 55% - 75% and does not decrease any further (ever). Restart or Shutdown restores perfect operation after reboot (but don't let him fall asleep).
I have repeated this dozens of times, with identical results.
The update was performed by the book. External devices disconnected, permissions repaired, disk verified by Disk Util. and DiskWarrior and the 10.4.7 combined update was used. Permissions and Drive Verif. was repeated after sucessful install. In my case, no other apps were effected. No Sys Errors were logged, No crash events, no Kernel Panics.
There are thousands of Sys Config combinations involving both hardware and sotware. This looks like a flawed release on this hardware. "Updater Beware", especially the first month after a major release like this. Look for a fix very soon.
Even so, the people at Apple have done extremely well over the last few years.
I know, because I work with a dozen or more Generic PCs and there has never been a trouble free update from the other side.
Having a second internal hard disk with identical OS and applications is like having a second computer in the same case. It is also a good idea to use backup software to auto-sync your user files in realtime. You can boot from one while repairing the other etc.

How to stop my Time Machine external hard drive preventing iMac from sleeping?

I have a late 2012 iMac, and have discovered that sometimes (I haven't noticed a pattern of when it doesn/doesn't happen) the computer will immediately wake up after I set it to Sleep (Apple Menu>Sleep). Through elimination I have found that it is the the USB 3.0 external hard drive I use as a Time Machine back-up that is the culprit; unplugging it then allows the computer to sleep. If I unplug it, then plug it back in later on, this normally solves the problem for a while, but not forever. This same Hard Drive didn't cause the wake problem on my previous '08 iMac.
A big issue is that when the machine immediately wakes from sleep, the display stays off (until I move the mouse) - this is good from a power saving point of view, but means I don't know if/when the machine is immediately waking from sleep (I have to listen to the fan when setting it to Sleep mode to hear if it has actually woken back up).
I've searched the forums, but can't find another poster with the same problem as myself. Can anyone advise a course for me to pursue to prevent this from happening?
Thanks. Jamie

Hi Frank. Nope, I'm still having the same symptoms; the plugged in external drive (TIme Machine) will wake the machine up a couple of seconds after it winding down when put to into sleep mode. Ejecting the drive and then sleeping the machine works. After plugging it in again to do a Time machine backup, it will allow the computer to sleep soundly for the first few sessions (eg a few days of sleeping, waking, sleeping, waking, etc), but then it will then suddenly start preventing it from sleeping again after a while.
It seems I'm fortunate in my case that the display stays dark (or off?) when the machine has been woken from sleep, but this was actually preventing me from knowing the machine wasn't in fact asleep for quite some time; I only eventually cottoned on because there wasn't any delay when 'waking' my machine (which there normally is). I would then have to carefully listen to the spinning fans to know if in fact it had gone to sleep or not.
So, to summarise, unfortunately no, I haven't solved this yet. If anyone else has a solution, please let us know?
Also, I've noticed occasionally after waking that there is a relatively quiet 'crackle' sound (kind of electrical sounding) from the bottom-right area of the machine. This goes on every so often for about 30mins. I see this is also an issue with other people's late 2012 iMacs, but I've not seen if anyone has a solution to it?

Display Changes Resolution When Computer Wakes From Sleep

I have a MacBook Pro bought in May of 2006. In the last year, this problem has been getting progressively more annoying to me. When the computer wakes from sleep (not every time, but most of the time) the screen will flash blue, then reset the resolution to 640 x 480, I think. To fix it, all I have to do is go to System Preferences and change the resolution, but when I do that, it pops up two windows, like it thinks I have a dual display set up. To fix this, I always click 'detect displays,' and it fixes it, but the next time I wake the computer from sleep, it does it again. This isn't really an urgent problem, but I would expect my computer to behave a bit better for me.
Thank you in advance for any aid you might give me.
Lisel

Hi Lisel. I have a similar age MacBookPro that does the same thing. I don't really know how to fix it I'm sorry, I wish I did cause it's annoying. I just thought I'd let you know you're not the only one with this issue.
Basically, for some reason it thinks it has two displays connected, even when there isn't. To stop it being a total pain, make sure when it does come up with the two Display Pref windows to set them both to 1440x900, at least then when it does go dual display it won't be 640x480 and you can still read stuff.
I've also left the Display Pref icon on the top tool bar (next to the AirPort and Bluetooth and stuff), so I can just click that and Detect Displays. When it does that it figures out for itself it doesn't actually have two displays connected and so goes back to normal.
I know that's a workaround and not a fix, sorry. I'd be keen to know if anyone else has any better solutions:)
Thanks,
Mark.

Audio volume low when computer wakes from sleep - os x yosemite

I've been having an issue ever since I upgraded to OS X Yosemite, where the audio volume coming out of my external speakers is extremely low after I wake my computer up from sleep. The only resolution I have found is restarting the computer. Once I do that, the audio volume is great. If I were to boot up my computer after it has been completely shut down, the audio volume is also great. The issue only occurs after sleep. Anyone else having a similar issue? Is there another fix besides restarting the computer?
Speakers: Bose Companion 2 Series II (these are wired, not bluetooth)
Computer: Mac Pro - late 2013 - running Yosemite

This is a BUG. It has been submitted to engineering many times - unfortunately Apple has not done anything about it.   We have 5 Mac Pros, all 5 do the same thing after updating to Yosemite.   The PRAM / SMC reset is useless - we even installed a fresh OS on one of the machines (a suggestion of the level 2 Apple tech) same problem.   Clearly this is a system level bug.   Only way to get it resolved is to keep pounding the bug report site with requests.     The squeaky wheel gets the oil.   The problem is 100% repeatable on the machines that exhibit the bug.
In the mean time set up an applescript with this command and it will reset the sound - do not include the brackets :
<do shell script "sudo killall coreaudiod" with administrator privileges>
Run it every time you wake from sleep and you won't have to deal with the problem ever again.
Pretty lame that Apple has not fixed it even though the problem appears to be pretty widespread.

Screen flickers when computer wakes from sleep

O.k., so I also had this problem when I updated to 10.6.8, but it's still here in Lion.........
When the computer wakes from sleep, I get a single flicker along the bottom 1/3rd of the screen, then everything's o.k.
It's just annoying, that's all. I've backed out to 10.6.7 on 3 occasions, and the flicker disappears.
Anyone else having this issue?
I'm running a 2010 Quad-core Mac Pro with SSD and 27" Display.
Bob.

Update:
I've now been to the local Apple store, and tried their display Mac Pro/27" Cinema Display combo, and guess what.......the screen flickers on wake-up.
I asked the guy in the store about it, and he says "oh yes, I see that. No-one has noticed that before, I wonder if mine does it at home".
I tried the Mac Mini with 27" Cinema display, and the 27" iMacs, and they were o.k. (no flicker).
So, this only affects Mac Pro's running 2560 x 1440 resolution.
I've booked another call with Apple Support. No doubt they'll still tell me to take my computer in for testing, even though I've shown they all do it (the guy in the Apple shop suggested that, even though I demonstrated the flicker to him on the one in the shop).
I wonder how long this will take to get a software fix? Problem is, the Pro is not mass-market (like Macbooks and iMacs), so it may take an awful long time.
In the meantime, I'm sticking with 10.6.7.
Bob.

Folder always opens when imac wakes from sleep

Don't think its a huge problem but when new imac wakes from sleep the same folder always pops up on screen(shaded in black). It always has to be closed before I can proceed with anything.Any suggestions would be appreciated. Also the folders name is always highlighted red. Thanks

Searching the web for "appcode.hex" the first item that I found was for something related to an Olevia TV.
A .exe file is a Windows file and will not run under Mac OS X.
Installer Vise "Creates software installers for Windows or Macintosh.(MindVision Software)"

IPod 4G always mounts for disk use when Mac wakes from sleep

My 4G iPod is always mounting for disk use when my Mac (10.4.8, Dual 1.8 GHz G5) wakes from sleep, even though the settings for the iPod has "enable disk use" unselected. When I launch iTunes (latest version) the iPod promptly is unmounted. I have restored factory settings, I have reinstalled the computer's OS and iTunes with it.
What is going on and how can I make it normal?
Dual 1.8 GHz G5 Mac OS X (10.4.8) iTunes 7.1, iPod 4G 20GB

UPDATE:
I have started to turn off Bluetooth at night before I put my computer to sleep. I HAVE NOT HAD THE FIREWIRE RANDOM DISMOUNT PROBLEM SINCE. I do not know if this is a freak coincidence -- but so far, so much the better for my firewire drive.
Hope this helps someone else down the line... eh hem...

Intuos4 tablet won't work when iMac wakes from sleep

Whenever my iMac wakes from sleep my Intuos4 tablet no longer functions (I use it in place of my Magic Mouse). Has anyone had this issue?

Viking501,
You may want to mark this thread with a correct answer which you will find in the Legend to the right. This may help other people with a similar issue.

HT1338 why do i lose wi-fi internet connection on iMac when computer wakes from sleep

Everytime my imac wakes from sleep I lose internet connection and have to go into network and reconnect. I am using OS X Mountain Lion software. Please help!

You might try looking at these Apple support articles:
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http://support.apple.com/kb/PH10662 - very simple suggestions only
Here is another thread with a suggestion:
https://discussions.apple.com/message/18848093#18848093
You also might want to consider filing a feedback report. A lot of people are having similiar problems:
http://www.apple.com/feedback/
If you monitor the "More Like This" box (top right), other threads appear. Opening them usually displays other threads.

I lose internet connection on iMac when it wakes from sleep

Everytime my imac wakes from sleep I lose Wi-Fi connection. I am using OS X Mountain Lion. Please help

You might try looking at these Apple support articles:
http://support.apple.com/kb/PH11099
http://support.apple.com/kb/PH10662 - very simple suggestions only
Here is another thread with a suggestion:
https://discussions.apple.com/message/18848093#18848093
You also might want to consider filing a feedback report. A lot of people are having similiar problems:
http://www.apple.com/feedback/
If you monitor the "More Like This" box (top right), other threads appear. Opening them usually displays other threads.

Trashing noise when mbp wakes from sleep

oh now i've started posting i keep thinking of new things that don't seem right!
for the last few months i have noticed that when i wake my mbp up from sleep, it always makes a few strange noises much the same as when you empty the trash bin as it crunches stuff.
has anyone else had this and might know why its doing it - is it serious?
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when this starts happening, is it a sign of something serious with the machine and can i do anything?
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thanks sig for your response and i shall certainly give the rebooting a try from disc and running repair disk.
However, i am sorry if i have caused any offence but I am terribly confused about how i might have offended anyone by my use of shortcut language - the only thing i can see I've done is use the macbook pro initials which isn't unusual on this forum as i can see and not capitalise some of my letters.
'a modicum of respect' seems a little harsh and i haven't been pulled up on such things for many many years.........
i have always been very polite and very grateful on this forum.
strange world.

When Yosemite wakes from sleep, no password entry box.

Installed Yosemite v 10.10 on a mid 2011 iMac. I use the standard energy saver settings for sleep and require a password after screen save and sleep.
About half the time, when I wake the machine from sleep, the enter password screen appears, but there is no password box and no mouse pointer. The icon for the user is there, but nothing else. It also seems there is no mouse or keyboard availability.
I'm forced to do a hard reset, the install scrubber bar appears asif the machine is finishing an install, then I can log in.
Attached peripherals are external drive for back up, speakers and iphone.
I've looked around for similar problems but have not found any. I did do a safe boot to no effect.
Any ideas?
Thanks.

Installed Yosemite v 10.10 on a mid 2011 iMac. I use the standard energy saver settings for sleep and require a password after screen save and sleep.
About half the time, when I wake the machine from sleep, the enter password screen appears, but there is no password box and no mouse pointer. The icon for the user is there, but nothing else. It also seems there is no mouse or keyboard availability.
I'm forced to do a hard reset, the install scrubber bar appears asif the machine is finishing an install, then I can log in.
Attached peripherals are external drive for back up, speakers and iphone.
I've looked around for similar problems but have not found any. I did do a safe boot to no effect.
Any ideas?
Thanks.

Program starts when computer wakes from sleep

I have recently found that when I wake my machine from sleep, my scanner program starts up (HP Scan Pro). I can't figure out why or when this started to happen. I have looked in the application preferences to see if some setting could be affecting this. But alas, I don't see anything.
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What program launches?
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/System/Library/StartupItems
/Library/StartupItems/
/Library/LaunchAgents
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~/Library/LaunchAgents
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Some printers may act like cameras and launch the default program in Image Capture. To check for this:
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Time Machine Preferences breaks when I wake from sleep

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