USB Power on sleep mode

Do MacBook Pro's supply power to USB devices while it is in sleep mode unplugged?

Thanks. So if it is supposed to work for iDevices, why does my iPhone 4 not charge while in sleep mode?

Similar Messages

  • Does the USB port provide power in sleep mode?

    Subject pretty much says it all... curious as to if the USB port will continue to provide power to a connected device even in sleep mode?
    I can find some info on the G5 iMacs that say they did not, but can't find anything on the Intel iMacs.
    Specifically, thinking of buying an iPod Nano and wondering if it will charge it while sleeping.

    Regarding Apple's document, it is interesting to note:
    Your computer goes to sleep
    Your computer can only charge iPod when it's turned on and not asleep. Make sure your computer on and is not set to go to sleep when you want to charge iPod.
    Tip: Some Macintosh computers can charge iPod even though they're asleep. If your sleeping computer doesn't charge iPod, don't worry, just wake it and let iPod charge.
    Apple doesn't specifiy which computers are capable of this however so I wouldn't bet on it.
    Of note, the USB port must provide a very small amount of power not only, I would think, to allow the keyboard/mouse to wake the Mac but also to light the LEDs of my bus powered (not AC powered) Macally hub which remain constant as long the Mac is on (sleeping or not). That also applies to the USB charger that came with my Kensington Wireless keyboard (although I have not tried charging while in sleep mode). That being said, the power - no doubt - is minimal.

  • USB Power during sleep

    I'd love to be able to power/charge my Ipod(s) while the lid is closed and asleep. Is there a firmware hack to keep USB powered while sleeping perhaps?

    Hi Ken,
    when your powerbook or ibook is in sleeping mode, the USB ports are switched off and are not charging. If you have a FW to iPod cable, this will provide power for charging even if the computer is in sleep mode. This is even so when like with the newer iPods FW cables cannot be used for data transfer. I have just tested this myself using my powerbook and my 5th generation iPod.
    Also, you can always check whether your iPod is being charged yourself, by watching the display! If there is this electrical spark symbol visible on top of the battery icon, then it is being charged!
    Regards,
    Bernard
    PowerBook G4 1.25 GHz   Mac OS X (10.4.8)  

  • Macbook Pro 13" late 2011 crashes when i plug out a "Focusrite Saffire 6 USB" while in sleeping mode.

    Hi Forum,
    I have a problem with my Macbook Pro crashing when i plug out my "Focusrite Saffire 6 USB" while it´s still in sleep mode.
    I do have the latest drivers and updates so is there any way to fix that Problem ( besides not pluging it out while in sleep mode)?

    Man punches himself in the nose. "OW!" he says. He punches himself again. "OW!!" he says. After the sixth or seventh time, he asks a friend how he can stop his nose from hurting.
    "Stop punching yourself in the nose," the friend advises.

  • 6300 power saver & sleep mode

    Hello,
    My problem is that after only one week that passed after I bought a Nokia 6300 my power saver and sleep mode stopped working. I tried turning them on and off or even put one on "off" and the other one "on" but it seems they just stopped activating.
    Did anyone encounter this problem or know how to solve it, because it's anoying to have always the phone in idle mode.
    Thank you in advance.

    08-Nov-200710:59 PM
    knowledge wrote:
    Have you tried switching the phone off and on again to see if that solves the problem ?
    That would be the solution for it.

  • How much power is Sleep Mode using?

    I use my PBG4 as a desktop, with the power plugged in. I love using sleep mode so it'll come back on almost instantly, but I'm wondering how much power I'm actually using (read: "wasting").
    Is it so miniscule that my environmentalist conscience can justify leaving it in sleep mode overnight? Inquiring minds want to know.
    /tw

    According to this Apple PDF: Apple Product Environmental Specification - Powerbook G4 12", the PB draws about 3W while asleep and plugged in, about 20W when awake and idle and about 2W when turned off and plugged in (battery charging).

  • 5310 Power Save & Sleep Mode Off But Display Still...

    I have a 5310, and I thought if I turned the Sleep mode or Power Saver Off the display would always stay on?
    I want to keep the display on especially when I'm using the phone for the internet, email, or surfing, etc...
    It's quite annoying that I constantly have to push keys to turn the screen on like every 30 seconds.
    THANKS
    Message Edited by dasfox on 07-Jan-2009 07:39 AM

    Anyone know how to keep the display on?
    THANKS

  • New MBP 17 C2D - Machine loses power in sleep mode

    Just got my machine so not a lot of usage, but I noticed it ran out of power yesterday. Charged overnight - it was in full charge at noon. Unplugged and used for a few minutes - put to sleep for an hour. Came back and it was at 92%. Used (lightly) for about an hour and battery went to 60%. Put machine to sleep, packed in suitcase and drove for 2.5 hours. Awoke machine and power down to 20%. Clearly either (1) it loses power in sleep or (2) it is waking up on its own and losing power. Only other thing I noticed is that I left parallels running internet explorer when machine put to sleep, and it had shut down (no message but app closed) when machine awoke.
    thoughts

    Try cycling the battery a couple of times by normal usage and see what happens. I remember this happening to me once as well when I first got my replacement MBP battery (due to the massive recall of Sony batts). After cycling the battery a couple of times by normal usage, it held its charge quite well I must say.

  • Power Management/Sleep Mode

    Hi Guys,
    I have searched the forum and not come up with what is going on with my new Mac Pro 2.66. When I got it, and set the energy saver to power down the monitor and drives at 15 minutes it worked just fine. Now all of a sudden it will not put the unit to sleep after 15 minutes. It will do what I have scheduled, that is to shut down at 11:00PM each night and start up again at 6:00AM in the morning, but during the day "will Not" sleep after 15 minutes. It will manually sleep if I choose that from the open apple menu.
    I went through a series of diagnostics with Apple tech support, including removing all .plist files for energy saver and startup preferences, and also did a complete new install from my system CD's. The apple rep says it seems to be a power supply issue after he also had me reset the power management module by disconnecting all cables from the cpu, powering down and then waiting 2 minutes, restarting and then reconnecting all cables and peripheral devices.
    Based on some of your vast experience, do you concur with apple tech support that a new power supply replacement may be in order?
    Many thanks for your input...
    Jim

    Disk Warrior is essential. And no you aren't going to find a disk repair program dealing with corrupt files and directories that is shareware.
    Onyx is freeware though.
    http://www.macupdate.com/info.php/id/11582/onyx
    I have gotten into trouble with TCC though I used it for years, never deep cleaning. For that I preferred Applejack (donation-ware). Onyx seems okay but also scares me with its "improved" and "corrected a bug in..." mentioned in updates. Seems excellent, and maybe it really is complicated.
    I backup daily with multiple sets, use SuperDuper and follow up with Disk Warrior afterwards and as preventative maintenance.
    MacFixit has some excellent tutorials on best practices for doing system updates and maintenance. I deep clean caches with Applejack.
    TCC and Onyx have menu items to kill delete remove Spotlight. Or there is "Spotless" as well.

  • G3 Power Usage in Sleep Mode

    My iMac 400 MHz PowerPC G3 uses about 34 watts of power while sleeping. (100 watts while running). I've read other Macs use as little as 3 watts. Is this normal for my computer?

    Completely sleeping. Newer Macs require much less power when sleeping, so I've read. I've seen a few places that seem to indicate there are certain Macs like mine that use more power in sleep mode. My computer was bought in 1999 or 2000. Maybe they've just improved efficiency since then. I plugged my computer into a device called Kill-a-Watt which measures electrical output. I suppose most people may not know (or care) how much juice their machines are using, but I like to keep my usage at a minimum.

  • IPhone 4 doesn't wake up from the Sleep Mode

    iPhone 4 32Gb doesn't wake up from the sleep mode. When the iPhone goes into the sleep mode, I can't wake it up with the 'Power' button, neither with the 'Home' button. The phone is working, I even can hear the sound of 'unblock' slider if u touch and slide the screen at the place where the 'unblock' slider suppose to be, but the screen remains black. I have to push the 'Home' or 'Power' buttons MAAAANY TIMES to make the screen appear finally. Sometimes I need to push it 30 or 40 times!!! Or I just have to reboot the phone to make it work. But right after it goes into the sleep mode, I can't wake it again But when the phone is connected to iTunes, the sleep mode is working good (one push on the button and the phone is awaken). I tried to upgrade to 5.01 but nothing have changed. Also I've tried to synchronize the phone as 'New', but no luck again, the problem is still on the case. What I have to do? Do someone have the same problem? In Russia we have no official Apple Stores and my iPhone 4 is from Malaysia. So I can't just go to the Apple office and replace the phone. What can I do?

    No, I don't have a case only a protective membrane on the screen... and I've tried to reset the iPhone by holding the 'Power' and 'Home' buttons with no result. After this reset the phone is working normally sometimes for about ten minutes (wakes up after one push), but then it's all repeats. And I repeat, that if I connect the iPhone to the PC with the USB-cable, the sleep mode is working fine, just like it should (I can wake the phone with one button push).

  • Program windows will rearrange themselves when monitors are in sleep mode - how to stop windows switching screens

    iv got 3 screens on one card via display port adapter and a 4th on a second card so as to have a 1 on top of three setup.
    the computer itself does not sleep as I have servers running but I have the screens set to sleep after 10 mins.
    for the longest time all screens would go to sleep and wake with no issues... in the last few months 2 issues arise.
    1. after the monitors go to sleep and in no consistent time 1 monitor wakes enough to show the backlight but no display... wakes ok and sometimes screens dislocated.
    and
    2. when the monitors come out of power save / sleep mode some of the windows I had open will have been moved to different monitor like the monitors have been unplugged or "detected" numbers have changed and I have seen the number
    change a few times as well but not always.
    I say some because I have 4 windows open on my left most monitor and 2 of them end up on my right monitor after the glitch.
    sometimes the stuff on my center bottom {main screen} will end up on the top single monitor.
    no rhyme or reason... some days no issue at all wake up and all is where it should be and all screens slept all night
    most often this issue happens at night or after a long sleep session short sleep sessions and it does not happen.
    for all the tech info
    ATI 5750 and 5770 running in xfire mode w/ 1displayport to DVI / 1 HDMI to DVI / 1 DVI.
    and ATI 5450 for the top monitor
    windows 7 x64 / 8 core AMD8320 / 16 gig mem.
    latest video drivers...
    any info?
    I'm a tech and even iv been scratching my head for a while on this one
    thnx in advance for even reading to see my problem
    thnx even more for an answer...lol
    2.6 quad core - 3 gig ddr2 - 2x x1550 ati 1 pcie 1pci - 3x 500 gig hd 1 320gig 1 250 gig 1 200 gig

    kinda yes i added a second video card as a slave in a crossfire setup
    iv had this same setup before and have switched a few times with minor issues that always got solved with driver reload
    and for some reason in this final setup this is the only thing still messing with me.
    some days wake up and all is correct on screens and all screens are asleep
    next day #3 screen on far right will be awake and stuff from #2 middle bottom screen is up on top.
    iv tried reloading drivers... iv tried older drivers and beta ...
    have tried removing all info related to ati drivers and amd catylist and all that good stuff using their special removal tools...
    the event viewer keeps giving this but i don't see a connection
    i wish i did but im lost...
    The Peer Networking Grouping service depends on the Peer Name Resolution Protocol service which failed to start because of the following error: Overlapped I/O operation is in progress.
    and 
    The Peer Name Resolution Protocol cloud did not start because the creation of the default identity failed with error code: 0x800703e5.
    and lastly something about Schannel 
    The following fatal alert was generated: 43. The internal error state is 252.
    everything else is basic stuff
    thnx again and crossing fingers

  • HT2952 Bus power while sleeping on mid-2012 15" MacBook Pro?

    I have an external hard drive connected to the Firewire 800 port with a FW800-FW800 cable. It is bus-powered. On my previous Mac, a mid-2009 13" MacBook Pro, the drive would remain powered while the computer was asleep - it would spin down, but the lights on the drive would remain on, and it would spin up again when the computer woke up. Perfect. But my mid-2012 15" MacBook Pro cuts off bus power in sleep mode, so the drive no longer wakes up with the computer. Both are running OS X 10.8.3.
    The FireWire Ports: Specifications KB article says, "Output power is always available if the Apple computer is connected to AC power or is running (even on battery). Output power can be used to power FireWire hubs and devices such as disk drives and audio break-out boxes that operate within the limits of the computer’s FireWire port." I don't know whether "always available" includes sleep mode.
    The reason this is a problem is because when I wake up the computer, the drive remains off, so any applications that had open files from that drive get confused, changes lost, etc. Basically, it's a disturbance.
    I have tried resetting the NVRAM and SMC on the newer MBP, but it didn't change this behavior.

    Thing is, at least I experience a very similar issue (as have many others) with AC Power. The OP doesn't really state whether on battery or AC power.
    I had my 2011 MBP for over 2 years and my MOTU Ultralite audio interface for the same period. For the entire 2 years, my MOTU would be conneceted via FW800 and bus-powered. It would not lose power when my computer went to sleep (default Snow Leopard settings, going more than 24 hours without being touched). A few months ago, a new piece of software asked me to upgrade to Mountain Lion and, since that upgrade, I've had problems with my MOTU losing power when connected via FW800, all while connected to AC power... for no good reason.
    At least while on AC power, I would think "always available" means always available regardless of sleep mode.
    Like the OP, I have not had succes with NVRAM or SMC resets.
    In browsing other threads, I see that some have had some success resetting permissions.

  • Power Mac G4 sleep mode issue using 10.5.8

    Hello All,
    If this is posted in the wrong discussion room, let me know.
    I have a problem and I am not sure what to do at this point. For reference to understand the problem, I have a Power Mac G4 Dual 1.25Ghz MDD 2003(No FW 800) with an Apple Cinema Display. I also have a USB 2.0/FW 400 PCI card installed. I use this card to connect my external HD's.
    The problem I am having is that the machine does not fall asleep properly using Leopard. When I manually put the computer to sleep, the monitor and external HD's shut off, but the fan stays on. When I try to wake the computer by hitting keys on the keyboard or moving the mouse, the computer will not wake the monitor or the External HD's. Furthermore, it freezes the computer when it is in the mode and the only way for the computer to function again is if I restart.
    Until a month ago, I was running Tiger, 10.4.11, on my machine and had absolutely no problems with sleeping my Mac. I decided to go to Leopard, 10.5.8, and used the clean install option. I then used migration assistant to grab all my data and settings from a backup using Carbon Copy Cloner.
    Using 10.4.11, I would usually let the computer sleep after 15 minutes of idling. Now, under 10.5.8, the computer freezes after the sleep mode is attempted.
    At first I assumed that the computer was preparing itself to sleep and might take a while. I decided to wait it out to see if the computer would eventually fall asleep. I waited an hour but the computer maintained the same status with the fans blowing and the front power button light staying lit. And, of course, the keyboard and monitor were not responding.
    I read some forum discussions that suggested to people with similar problems to consider removing anything connected to the PCI card. It was suggested that the HD's were keeping the computer awake. I tried removing each HD one at a time to see if it was a particular HD causing the problem. With each configuration that I tried to put the computer to sleep, the same result occurred.
    At this point, I am at a loss. I love my PowerMac and don't feel the need to upgrade as my most of my needs are met with this machine. This problem is not a deal breaker for me, but it is an annoying to have to restart after leaving the computer for a while. I know the other option is to shutdown and startup each time I leave the computer for any timeframe longer than 30 minutes, but is annoying and I don't know how bad it is for the computer to be shutdown and started again so frequently. If there is a fix to take care of this problem, I am willing to try it.
    Any advice would be appreciated.
    Thanks in advance,
    Maverick

    the power logix thing was really sad. apple changed so much after 10.4.8 that there wasn't a viable way to patch the software.
    That statement is precisely why I don't believe in blindly updating the OS, especially in a non-standard machine.
    We can't expect third parties to support us forever, and it is shameful to break something that works fine, except that we updated the OS....
    I think that any upgrade or modification to a machine or the OS greatly increases the risk of trouble or incompatibility with current configuration and "new" system files.
    After all, the component or software could only be tested as far as the current OS version when the component or software was released.
    Beyond that, we are all "beta testing".
    Following a beta tester protocol, and applying updates to a cloned system drive first, is a prudent way to approach updates, and not only for older, heavily modified machines.
    After 10.4.8 and moreso with Leopard, the focus is primarily on Intel architecture, not PPC architecture.
    Like it or not, we are all updating to the abyss of the extinction of our machines, unless we can be satisfied with the last stable version of OS that works well with our hardware and software.
    I wish they would include the latest pkgs at least with software update.
    Yes, having individual packages, rather than lump "OS X 10.x.x" updates would be nice.
    This way, one could update as one sees fit. That is to say, for example, fix the Quicktime, but leave my Network alone, etc., etc.
    In all fairness, Apple does provide for some breakdown of updates, but I believe there is much room for improvement, especially, as you point out, with regard to the core services portion of the OS.
    Until then, I'll leave Software Update disabled.......

  • Driver issue? with docked T61, and 31P9490- IBM USB Travel Keyboard w/ UltraNav and sleep mode

    Can someone from Lenovo please advise me on which version drivers need to be installed for the external keyboard and mouse, and/or the proper power setting(s) to use with this configuration so the machine will react and wake up from its nap with a Fn+F4 on the external keyboard?
    T61  7658-CTO,  3GB RAM,  Vista Business Ultimate.  These are the external IBM/Lenovo devices used:
    250410U     THINKPAD ADVANCED MINI DOCK
    31P9490    IBM USB TRAVEL KEYBOARD W/ULTRANAV
    31P8700     SCROLLPOINT PRO OPTICAL MOUSE 
    I have an issue with waking my T61 up from sleep mode while it’s docked and using the external keyboard, mouse, and monitor.  When the machine is docked, the blue Fn keys or the Think Vantage button do not function on the external keyboard.
    The external keyboard seems to be the same as the internal keyboard installed in the TP- which I thought would react the same as the internal keyboard when I installed the driver that it came with.  I had hoped something this simple would be easier than it now seems. 
    Thanks in advance! 
    Cheers, Mark  
    Message Edited by masnider on 12-16-2008 03:33 PM
    Message Edited by masnider on 12-16-2008 03:42 PM
    Message Edited by masnider on 12-16-2008 03:42 PM

    Thanks for the advice Izzy.  After installing both sets of keyboard and hotkey drivers it does respond to most (but not all) blue Fn key combinations as marked on the external keyboard.  The blue ThinkVantage button still does not respond. 
    Oddly enough, I am able to use the Fn+F4 key combination to put it into sleep mode and to bring it back out, but when the display comes back I have no control of the UltraNav pad, track pointer, or mouse.  I had to open the TP cover slightly and use the pad to get past the login screen to the desktop.
    Incidently, just after using the UltraNav pad on the machine as it was slightly open a couple of messages popped up onscreen involving the USB port(s).  One indicated it was searching for a new device driver for a USB connected device, and the other indicated I could benefit from connecting the device to a high- speed USB port by unpluging the low-speed hub and connecting directly to an available high-speed USB port.
    Interestingly, I don't have any external hub connected. It may have identified the docking station USB ports as low-speed, which I don't believe they are...any ideas for what to do with this new set of issues? 
    Thanks, Mark

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