HT2412 to sleep or not to sleep?

Is it better for the computer to 'Never Sleep' in Energy Saver mode, or set it to go to sleep after a few minutes or an hour or so? I ask because I remember reading an idea some years ago that it's better never to shut down a computer because when it's started up again it's subjected to maximum stress. I'd rather forgotten this idea in recent years, and set my MacBook to go to sleep after an hour, but when re-setting the Energy Saver a little while ago the question ocurred to me again. Informed opinions appreciated.

Sleep is fine on "Today's" computers. And unless you need your computer to be awake for other purposes (such as being a file server, media server, backup server, etc..., then allowing it to sleep is a perfectly acceptable and even desirable thing to do.
I'm old enough to have used the computers that did not like being turned off. In those days they were kept in special air conditioned rooms on raised floors, with glass walls so company officials should display them to show how advanced a company they were. They took up multiple 19" rack cabinets, and the disk drives were separate washing machine sized devices holding as much as 100MB of data for each washing machine. The CPU was several very large circuit boards (not an integrated chip), and the RAM was several other very large circuit boards, and then there were the circuit boards for the external devices (card reader, disk drives, magtape drives, terminals). Lots and lots of discrete electronic components. And it had less power than your typical digital wristwatch of today :-)
In those days if you owned a computer (as in your company owned a computer), it was so expensive the company kept is busy all the time, so it was not typical to power them off (no such thing as sleeping in those days).
So between having lots and lots of components, each of which increases the chances of a single point of failure, they were not typically used in a power on/power off mode so designers were not under pressure to over spec components for the stress of heading up and cooling down all the time.
Today, you iPhone has the power of a '70's super computer that filled a room. All personal computers today uses far fewer components and they are designed in a world where personal computers and mobile devices are power off, or even used in hot (like a car) or cold (like Alaska) places.
You can put your Macs, iPhones, iPads, iPod Touches, etc... to sleep or power them off. They are not going to get stressed out over it.

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Macbook air 2013 black screen with cursor, anyone has same problem?

And I found out that everytime when screen become black, it is 100% acompanied by wifi disconnection.

Sleep mode?
Quoting from below linked article from Apple:
"What happens when the Mac goes to sleep (not just into idle mode or display sleep)?"
"An AirPort card, if present, turns off "
http://support.apple.com/kb/ht2412
If this is not the case, you have to contact Apple as soon as possible.
Best.

Firewire issue--Backup drive not found w/Time Machine after imac sleeps

I've had a lot of problems with Time Machine on my G4 imac since starting to use it a month ago. I think I have isolated the problem:
Time Machine functions properly while the computer is in use, and it has no problem after a restart or shut down, but if the computer goes to sleep and then TM runs its hourly backup, I get an error that it cannot find the Backup Drive. Once this happens, TM will no longer work until I've deselected the drive in TM, unplugged it, plugged it in again, and reselected the drive as the backup Drive. Sometimes this requires a shut down or restart too.
Here's what I've tried:
1. connected the drive via USB--it operated without a problem
2. unplugged all devices from the computer, shut down, waited, 20 mins, restrted, plugged the external drive back in via Firewire--the problem persists as described above.
3. deleted the TimeMachine.plist file, restarted--problem persists.
I've read that the Firewire port can be reset with other procedures such as zapping the PRAM or updating the firmware. I've also read that new problems can arise after reseting the PRAM so I'm hesitant to do this. Can anyone shed some light on the PRAM option?
I cannot find where the firmware updates are located on the mac site. Could someone point me in the right direction? I've looked under downloads and after searching, came up with a long list, but nothing was labeled clearly. Each listing mentioned firmware in the header, but it seemed to always pertain to a certain issue (eg. superdrive, or installing appleworks). I could not tell what was the most recent firmware released for my machine, and I fear installing something retrograde that will create new problems.
If anyone has any thoughts on how to deal with the firewire problem, or if you think my issue with using a FW connected drive with Time Machine might be rooted with something else, please comment.
Thanks!
HM
Message was edited by: imaginary_forest

fzgy wrote:
"Mac OS X can't repair the disk. You can still open or copy files on the disk, but you can't save changes to files on the disk. Back up the disk and reformat it as soon as you can."
It's possible a heavy-duty 3rd-party disk repair app can fix it, but they're expensive (DiskWarrior is about $100), and there's no guarantee it can do it.
Am prompted to reformat but I don't have a good understanding of what this means and how to do it.
That will erase it. See Time Machine - Frequently Asked Question #5.
It sounds very much like the disk is beginning to fail, although it's possible there's a bad port, cable, connection or power supply (if it has its own).
I'd suggest getting a new one, and using it for your Time Machine backups; once you have a good backup there, reformat the old one (and select Security Options to write zeros to the whole drive -- if that fails, you know the drive is toast). Use it for secondary backups, per FAQ #27. If it has failed, get a second new one for secondary backups.

When I resume my laptop from sleep/hiberante, firefox is hung. It will prompt me with a dialog when I quit, so it is still running, but the page display is blank and will not refresh. I noticed this since about beta 7

Firefox is running when my laptop comes out of system standby, but the page that was displaying when the laptop went into sleep mode is now a white canvas that does not refresh.
The application is not hung, because I get prompted to save tabs when I quit, but for some reason, I can't prompt Firefox into refreshing the screen.
I'm running Firefox on a Thinkpad T400 which has Intel 4 series Express integrated Graphics.

This also happened if the network adapter is disabled then enabled. My computer is Windows 7 x64. Firefox needs to be killed from taskman before it will load a new instance of the application. I can also reproduce with all add-ons disabled.

Can iMac not waking from sleep be caused be a corrupt file

I have had my 27" iMac from July of 2011 (running Montain Lion, 8 GB RAM, 2TB hardrive, 3.4 GHz,Intel i7) for over a year and a half and ever since I bought it, it has had a problem waking from sleep. I can hear the computer running, but when I click the mouse, keyboard, or power button, it stays asleep and I am forced to do a hard shut down. Apple has been trying to fix the issue, but to no success. They have replaced the hard drive, logic board, usb ports, RAM, mouse and keyboard, but it still happens. They finally threw in the towel and are replacing the machine. They offered to transfer all of our files (jpgs, mp3s, docs, videos, etc), but one thought occurred to me... what if the sleep issue is caused by a corrupt file? I highly doubt that is the case, but wonder if any of the experts out here would know better than I.
If we didin't have the data transfered, we would just keep it on an external hard drive instead. But, I would assume that it wouldn't matter if the files were on internal vs. external because either way, the computer would access the files. That being the case, if the sleep issue was caused by a corrupt file, the computer would still access it on the external and the sleep issue would resurface.
So, 2 questions:
Can a corrupt file cause the sleep issue?
If it is true that a corrupt file can cause the sleep issue, would it matter if the corrupt file was accessed from an external drive vs. internal drive?
Thanks so much!
Chris

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether your problem is caused by third-party system modifications that load automatically at startup or login.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode* and log in to the account with the problem. The instructions provided by Apple are as follows:
Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
When you see the gray Apple logo, release the shift key.
If you are prompted to log in, type your password, and then hold down the shift key again as you click Log in.
*Note: If FileVault is enabled under OS X 10.7 or later, or if a firmware password is set, or if the boot volume is a software RAID, you can’t boot in safe mode. Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

UPS and our iMac // Will not allow iMac to sleep.

Hello,
We have a Cyberpower UPS (CP685AVR) for our 20" iMac 2.66Ghz (last gen)and it works great. It has a USB interface to communicate with the iMac's power manager, and tells me how much juice is left, how the cells are doing, etc.
The only problem is the UPS will not allow the iMac to sleep; if I try to manually put it to sleep, it will wake again in 10-15sec. If I disconnect the UPS, the iMac works just fine. There are no third-party drivers, either. Cyberpower relies on Apple's built-in UPS support. I've been leaving the USB cable unplugged but would like like to use it if possible.
Has anyone had an issue like this, and what has been your experience? Thanks.

I won't buy Cyberpower anymore since I had one burn up on me so I have not had any experience with their newer models. I have 2 APC's and they work fine with the built in Energy Saver settings.
Are you connecting the USB directly to the back? I'm not sure if it will help but you might try resetting the SMC: http://support.apple.com/kb/HT1543?viewlocale=en_US
George

Final Cut Not responding after computer is in Sleep Mode

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Which version of FCP?
Are you on a network?
How many drives are in your Mac?
And, if there is more than one drive, are you absolutely certain you placed your registration information on the correct drive?
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bogiesan

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Once I unplug the keyboard and replug it in, it is fine.
Once I turn the trackpad on and off it is fine.
I can wake up the computer using the power button on the computer (but I still have to 'reconnect' the keyboard and mouse).
I've tried other keyboards. I've reset the SMC controller. I've reset PRAM.
Ideas.
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Thanks for the note. I neglected to mention that I had already tried that download. I received the "This update is not intended for this computer and will not be installed" message. Didn't see where I could do anything with it further.
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The sleep/wake button on my iPhone 4 does not work

The sleep button on my iPhone 4 stopped working today for no reason.
I cannot press it down anymore. I have never had this problem before.
Does anyone have any idea what the problem could be?
Thanks

rquinn77 wrote:
Does anyone have any idea what the problem could be?
Thanks
Yes, it's a broken button.
Bring your phone and $149 into Apple for replacement if you're not in the warranty period. Or, find a 3rd party repair shop and get it repaired there.

Satellite P845t-10G does not go to sleep closing lid after Win 8.1 upgrade

Hi,
I own a P845t-10g and since I upgraded to Win 8.1 the laptop does not go to sleep (or shut down) when closing the lid.
However, when opening the lid, it wakes from sleep mode.
I tried installing latest Toshiba systems settings utility and all updates on the support site.
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Thanks!

Did you check the option called: What closing the lid does?
Click on the 'Power Options' icon in taskbar (or in control panel).
Then click 'More power options'. Now a new windows will open. On the left side panel click on 'What closing the lid does'.
Now you will see two possible mode: battery and plugged in. For each mode you can set the action for closing the lid.
BUT one question: did you upgrade the Win 8.1 following the instruction from Toshiba?
http://www.toshiba.eu/innovation/generic/windows8_1-message/ Did you install all the Toshiba Windows 8.1 drivers and utilities in the right order!?

HP SimplePass Reader Does not Work after Sleep

I have only had my laptop for a week - the fingerprint reader stopped working 2 days after I bought it. I have tried everything: removing and re-installing various drivers and software, stopping and starting Credentials Manager, unchecking the box that allows the computer to turn the reader off to save power, etc.
I have gotten it to the point where it functions when the computer is logged in, but not after sleep. It works once if you restart the computer, but after waking it from sleep it does not initialize. (no light or anything) However, if you "lock" the desktop from the start menu, the reader will log it in again. (without closing the lid or putting it to sleep)
Simple Pass version 6.0 (latest downloaded from HP.com)
Envy Dv6 7229wm
Windows 8 64-bit
Thanks

Hello hawvi,
I see that you are having problems with the fingerprint reader not working after returning from sleep mode. I would like to help with this issue but I need some information.
Can you provide the full model and product number of the computer? Here is a link that shows how to find that information.
What operating system are you using?
How long have you had the problem?
↙-----------How do I give Kudos?| How do I mark a post as Solved? ----------------↓

USB device does not work after sleep

The problem in the following:
X230t in tablet mode,
connect to the USB port of the adapter USB to COM Port (ftdi232) all works fine,
but if not disconnect the adapter from the USB port and put the laptop into sleep (or hibernation) the following inclusion is not determined USB adapter (or other device) and does not work pen (stylus)
until you restart the laptop.
What to do?
How to fix it?
Please help, this is terribly annoying.

Thank you friend, I do not work and a stylus. Since he is also on usb!
Lenovo and for some reason does not want to fix it.

Mac book pro 10.5.7 sleep issue..... not even sydney genius bar can help me

ok hey guys, this is my first ever post on a support forum so please help me out!
I'll give any specific hardware info if needed later on but this is the basics:
i have had my mbp for over a year and 6months into it my mbp started going into sleep mode for no reason ...and no im not simple the energy settings are set to never sleep so its not that. Since then i have tried and tested everything under the sun to resolve the issue i have been to the genius bar and booked it in several times, each time they tell me they can not find any problem. I have had the logic board replaced - i have tried removing the p.list files, resetting pram thingy the battery test thing....everything...i have looked on endless forums for a resolution but nothing works!, it will go to sleep at random times generally when im doing alot of things on it it can run fine for days maybe sometime weeks but then its starts playing up again. When it does sleep the screen goes blank and the power light pulses but worst it cuts the internet connection which is terrible coz i have a time capsule and it cuts that link as well and messes that up entirely! sometimes it will just keep cutting out every 20-40 seconds untill i wake it by tapping the space bar or moving my mouse sometimes it just shuts down completely - i have done a compete erase & reinstall but ill b honest i still reinstalled some programs from my backups that cant be downloaded anymore (isquint etc) coz the genius guys said maybe a program is corrupting the hardware but if anyone has any ANY ideas or has the same problem please! tell me - im sure i could add more info n stuff but if u want 2 ask me specifics then i will answer anything to help
thanx again guys.
i should say at this point the only relief im getting to stop it from sleeping is if i disconnect the power adapter and use the battery that seems to stop it, but it has crashed(slept) on battery power as well but as of today doing this seems to help ....hasn't crashed since writting this! LOL

Has anyone got any assumptions on suspect software that may cause my problem??
I see that louie has a possible response for you. I had forgotten about that problem.
lastfm, transmission or handbrake. Can anyone confim issues after installing these apps?
if not these softwares then im convinced im dealing with a power issue.
I would be doubtful (although not completely dismissive) of anything like these being the source of your problem.
the genius bar has said it may b an enviromental issue. this also may be the case, tho not so much recently. They said perhaps magnectic fields may cause it 2 go 2 sleep and its true moving my MBP around does seem to settle it for instance if i move it out of my room im yet to see any of my sleep issues occur
The movement sensor might be involved, as also louie's excellent suggestion of the temp sensor. It is difficult to know how to test these effectively and might need more tools than the GB can muster.
But i dont live in a electricity tower and i did move my MBP to the other side of my room where it worked for a good month - and then started again with the sparatic sleeping.
It is hard to disprove a negative. The only way to bring some sort of evidence to the table if there were some such interference would be to use the computer for an extended period away from where you are using it now. If it works without problem in (say) Starbucks or some other neutral area, and then fails within a few minutes of returning to your home, then there is something stronger to work with. Then you can start to track down some external source, I would guess.
So i will try a safe start as graham had suggetsed as this seems as a simple enough fix - but i do run a time capsule, ext 1TB HD, Wireless mouse etc ..which i presume will not work in safe mode .... and is the idea to just keep safe mode on untill it does crash again or will just starting up on safe mode then restarting solve the issue?
Time Machine ought to work in Safe Mode; and I would not suggest working that way for a lengthy period of time: just to start it up perhaps to clear something that is interfering. But what you write here is of interest: (A) The HD -- what is it (brand, etc, and how formatted) and how connected; plus the wireless mouse? What brand is that (and I presume you mean Bluetooth)?
As for A weak diode..I dunno what that is or how 2 check it
Right. I couldn't either, and most shops won't: they would just replace the board. There is a shop here . . . but that is too far for you.
i think the battery is ok ..as i said it performs better at this point when i disconnect the power...but not always... i had a terrible day yesterday when it would keep going to sleep everytime i reconnected the power, if i try 2 persist it will keep going back 2 sleep ever 30 seconds untill i eaither just leave it be for a while or untill it just turns off completely!
That suggests, as I mentioned earlier, something awry with the battery/power combination; especially if the performance is not consistent. A battery should deteriorate gradually, not come and go.
If it does turn off when i turn it back on it wont even get to the grey apple logo it just keeps turning off after 2-5 seconds (turning off not sleeping)
so im at a loss why that is!
No power. You have to wait a while until the power level is brought up to a workable level.
The power cord seems fine all the pins spring out - the middle spring is smaller than the others tho.
Mine too. That seems OK.
Do post those logs. Someone might see the answer.

Since I installed Lion on my macbook the LED light does not pulse when I close the screen - the sleep function does not work.

Since I installed Lion on my macbook the LED light does not pulse when I close the screen - the sleep function does not work neither when chosen after pressing the button nor chosen in the apple menu..

I have had the same problem but on another forum it was suggested that disabling internet sharing would solve this. This fix seems to work on my machine - why it works I do not understand

HT2412 to sleep or not to sleep?

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