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)

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Mac Pro Ports cycling power during sleep - waking up drives

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There seems to be a roughly 2 minutes cycling of power of the ports when it sleeps. Powers all down in about 30 seconds, all lights out, screens go dark. Then maybe 30 seconds later the ports power back up, the drive lights (and other USB devices) power back up, maybe for 30 seconds before then powering back down. The screens do remain dark throughout this per Sleep. All this happens while under Sleep, and carries on cycling ports power this way, mounting and ejecting drives incorrectly each time as it goes….. This doesn’t seem right? It never happened under Mavericks. Have I got a Yosemite bug or a hardware issue cropped up by chance when I powered down my computer over Christmas and then installed Yosemite as a clean install?
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Whew, I thought I was the only one with this problem. I'm also getting the "double-click" sounds when trying to wake the machine up from the dead zone (after going to sleep- either on its own or after attempting to awaken it a few minutes after manually putting it to sleep).
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USB Power on sleep mode

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

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There is no provided mechanism to selectively control power to the USB or Firewire ports. Normally USB ports shut off when the computer is asleep unless you connect a device the prevents the port from shutting down, which you obviously have. You will just need to get used to disconnecting them when not in use if they don't have power switches.

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Hi
Have you applied the Firmware update? If so, try resetting the PRAM.
http://support.apple.com/kb/ht1379
Adam

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First - you aren't disconnecting any device while your computer is asleep are you? This can cause your problem.
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BTW - the device at fault could be a USB or FireWire hub.

Mac Mini Intel Snow leopard often dies during sleep. What to do next?

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I assume you have a current backup, so I would start by erasing the drive and reinstalling OS X.
Drive Preparation
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2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
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Why does my Macbook Pro use so much power in sleep?

Hi everyone, forum newbie here
My mid 2010 Macbook Pro (13.3" C2D 2.66ghz, 4GB etc) uses a lot of energy during sleep
It drains between 2-5% per hour, which believe me is a lot. My battery lasts anything from 3-4 hours to 8 ish if I'm using it very little, so to deplete roughly 5% per hour is not that much less than the laptop uses when it's switched on... so what's going on here?
I'm sure it's asleep all the time, not waking up for whatever reason, the blinking/breathing LED on the front side of the laptop glows and dims so I know it's in sleep mode.
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Your situation is not unique. Another long thread https://discussions.apple.com/thread/1758587?start=90&tstart=0 suggests that a solution is not yet forthcoming.
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Hi
Are you talking about Sleep & Charge function supported by some USB ports?
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IPod Nano (4th Generation) switches on when connected to USB power - shows Menu & hangs (unresponsive to click wheel) - deems off after 5-sec - Switches off after disconnecting from USB Power - syncs with iTunes - Tried 5R's - Problem still persists

1. The iPod Nano (4th Generation - 8GB) switches on, only when connected to USB power by showing apple logo and displays Menu options thereafter..
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7. Interestingly, it syncs with iTunes. It is recognised in iTunes (Latest version 11+).. Displays on screen all commands Like.. syncronising, connecting, connected,
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9. Read Trobleshooting & Tried all 5R's. Registered, Resetted, updated & Restored to iOS 1.0.2
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KINDLY GUIDE ME THE SOLUTION. APPRECIATE YOUR RESPONSE in advance...

"I get the feeling that this is a software issue that could probably be solved quite easily"
Since you have already tried all the normal troubleshooting solutions, take the iPod to your nearest Apple Store for a *proper diagnosis.* The staff there will be able to confirm if your problem is software or hardware _*at no cost to you.*_
!http://i50.tinypic.com/izvwo1.gif!

Using USB Power Adator in S. Korea

Traveling to S. Korea and wondering if I can go ahead and plug in my iPhone using the usb power adaptor that came with my iPhone. Of course, I will get a plug adaptor for their odd looking plug ins. I think I remember plugging in my MacBook Pro and iPod no problem last time.
Any good tips on what features to shut off so ATT doesn't charge me thousands of dollars during my 3 week stay?
Thanks in advance.

There is no problem using the adapter in South Korea. It is dual voltage, so it will automatically work for you.
Have a good trip and enjoy your iphone...

Boot Camp 2 issues: repartioning; DVD-drive; screen; sound; usb-power

I found various problems in version 2 of Boot Camp (included in Leopard).
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After removing the Boot Camp 2 Windows partition, it is impossible to recreate a new Windows partition. Somehow the windows partition is not completely removed (?) and the Boot Camp Assistent goes on forever restoring the Macintosh HD to its original (one partition) state. Strangely, you can just quit the assistant during this process without consequences. Only repartitioning the complete HD using Disk Utility resolves this (this of course requires a complete reinstallation of OS X).
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After installation of Windows XP Pro, Windows treats the DVD-drive (OPTIARC DVD RW AD5630-A) as a removable media, just like a USB-memory. This means that you can remove the DVD hardware from the system(using the tray icon "Safe Removal hardware") by just one click. The DVD drive then completely disappears from 'My Computer' even with a CD in! The only way to get the DVD-drive back is by restarting Windows (inserting a disk can be done but it is impossible to access the disk; ejecting the disc is also impossible (the eject key on the mac keyboard doesn't work).
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When I connect my 2 GB Kingston USB-memory to the internal hub of the new apple keyboard, Windows starts complaining that there is not sufficient power. The same configuration works without problems under Mac OS X.
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I also encountered problems 4 and 5:
*To no. 4: Distorted sound and background noise:*
It's exactly the same as described by HLO-HL. As soon as the soundcard gets turned on in Vista (by any program i.e. iTunes, Mediaplayer) there is this background noise. Watching a DVD is almost impossible. Listening to music in iTunes is somewhat ok, but only at high volume (so the background noise cannot be heard) and it is still distorted sometimes.
I tried about everything from installing the latetest Realtek driver, updating the Intel chipset drivers, to changing the bitrates and so on. Still no resolution found. It seems the many others experience the same problem (search for 'distorted sound Vista').
*To no. 5: Low USB power reported*
I got this message with every device I connected (no matter if it was a 2.5''-harddrive, a cardreader, a camera or just a simple memory stick ...

High-pitched beep/sound during sleep and shut down modes

I just wish to check whether is it normal that there's high pitched beep (not very loud but can be heard in a quiet room) which seems to be from the LED or AC Adapter during sleep mode. The beep sounds continuous when the computer has been shut down or in off mode while the main plug of where the ac adapter is connected to is still on. Is this normal? My computer works fine. Battery is charging fine. I just want check whether is this normal. It is has been like that ever since I bought my computer on March 2012.
HP Pavilion dm4-3005tx Entertainment Notebook PC

Hello Huanwei,
It appears that you can hear a "high pitched beep" coming from the notebook while it's in sleep mode or even off, when the power adapter is plugged in and "on". I will try to help you with this.
Normally, this should not happen. Beeping from a computer may happen during start up a few times to indicate components enabling, but any constant beeping or being while the computer is off shouldn't happen.
Does this occur, if the AC adapter is not connected to the notebook when it is in sleep mode or off? Do you only notices this, in a specific location? (office, etc.)
I would suggest, depending on the setup of things. Taking the notebook with no AC to another location in the house. A quiet one, make sure your not near any other electronics (no watches or cell phones either) let the notebook sleep and see if you hear the beeping. If not, then power it off and test again. If no beeping, this is good and the notebook is fine.
Repeat that same test with the power adapter connected ( again no other electronics around you). Listen while it is "sleeping" and off to see if you can hear the beeping again.
If you do disconnect the AC from the notebook , but leave that connected to the wall and take the notebook out of that location, go back to see if you can hear beeps again. If you do it could be the AC adapter. If you don't then it could be an issue with that only when it's connected.
If there was no beeping when the AC was connected in this "testing location", then I would guess it is something else within the house that is beeping (we have seen that before). In which case you'd have nothing to worry about in regard to your notebook.
Let me know where the above leads.
Thank you for posting on the HP Forums.
I worked on behalf of HP.

USB Power during sleep

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