Imac having problems with USB connections

My Imac keeps intermittently losing connectivity with USB devices.
Frequently, after the machine has been sleeping it fails to recognise the USB pen drive -  which I tend to leave plugged in. Also, on several occasions it's lost printer connectivty. ( which is connected via USB cable)
Rebooting cures the problem but this is a complete pain!
Is there any way to force the machine to simply rescan available and connected hardware?
it's got to be ultimately embarrassing that this is something that Windows does–surely my Mac can too!

Open console in Applications>Utilities, check the system log for the date/time of the last problem  & the Startup right after that for clues.

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  • Since upgrade to ios6 l have been having problem with wifi connection and connecting to App Store and iTunes store

    Q since upgrade to iOS6 l have been having problem with wifi connection and getting into App Store and itunes

    Saw this on another post.
    Applecare Senior Advisor Txx Bxxx (I have his contact info in an email he just sent) just confirmed with me that the problem people are having with the App Store not loading is an apple issue with there servers, ITS NOT YOUR IPAD so don't go restoring it!   It's not happening to everyone however but they are looking into it, its really hit or miss.
    In the meantime ...........
    The Complete Guide to Using the iTunes Store
    http://www.ilounge.com/index.php/articles/comments/the-complete-guide-to-using-t he-itunes-store/
    Can't connect to the iTunes Store
    http://support.apple.com/kb/TS1368
    iTunes: Advanced iTunes Store troubleshooting
    http://support.apple.com/kb/TS3297
    Best Fixes for ‘Cannot Connect to iTunes Store’ Errors
    http://ipadinsight.com/ipad-tips-tricks/best-fixes-for-cannot-connect-to-itunes- store-errors/
    Try this first - Reset the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons.
    This works for some users. Not sure why.
    Go to Settings>General>Date and Time> Set Automatically>Off. Set the date ahead by about a year.Then see if you can connect to the store.
    ~~~~~~~~~~~~~~~~
    iOS 6 Wifi Problems/Fixes
    Fix For iOS 6 WiFi Problems?
    http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
    Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
    http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
    How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
    http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
    iOS 6 iPad 3 wi-fi "connection fix" for netgear router
    http://www.youtube.com/watch?v=XsWS4ha-dn0
    Apple's iOS 6 Wi-Fi problems
    http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
    ~~~~~~~~~~~~~~~~~~~~~~~
    Look at iOS Troubleshooting Wi-Fi networks and connections  http://support.apple.com/kb/TS1398
    iPad: Issues connecting to Wi-Fi networks  http://support.apple.com/kb/ts3304
    WiFi Connecting/Troubleshooting
    http://www.apple.com/support/ipad/wifi/
    How to Fix: My iPad Won't Connect to WiFi
    http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
    iOS: Connecting to the Internet
    http://support.apple.com/kb/HT1695
    iOS: Recommended settings for Wi-Fi routers and access points  http://support.apple.com/kb/HT4199
    Additional things to try.
    Try this first. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
    Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
    Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
    Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
    How to Quickly Fix iPad 3 Wi-Fi Reception Problems
    http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
    If none of the above suggestions work, look at this link.
    iPad Wi-Fi Problems: Comprehensive List of Fixes
    http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
    Fix iPad Wifi Connection and Signal Issues  http://www.youtube.com/watch?v=uwWtIG5jUxE
    Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
    Unable to Connect After iOS Update - saw this solution on another post.
    https://discussions.apple.com/thread/4010130
    Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
    ~~~~~~~~~~~~~~~
    If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
     Cheers, Tom

  • If you're having problems with USB ports, read on...

    i'm reading that alot of people on here are having problems with their front (or top) usb on their cases not working with their k7n2 boards.  i have come across the correct solution to this problem in one of the posts (after having solved the problem on my own), however noone has posted the solution by itself on this forum so everyone can easily see it.
    The trick is to make sure that pin 10 (at least on a K7n2 delta-L), the pin labeled USBOC (USB Open Connection), is wired to NOTHING.  If the connector to your front usb ports is fused into one giant connector and it HAS a wire that will connect to this pin (labeled GND2 or Shield or something), CUT THAT WIRE.  Pin 10 on JUSB2 (at least on a K7n2 delta-L) must be OPEN.  If this pin IS connected to something (even if it is only GND), the motherboard will think something is connected to this usb port and you will get many unknown devices listed in your windows device manager and the rest of your usb ports may or may not work.
    As a general rule of thumb, if a pin on a motherboard is labeled OC for "Open Connection" and you wire something to it, you're asking for trouble.
    If you cannot understand this you should not be attempting to wire a motherboard in the first place. 
    Here is a picture to go along with this discussion.  If you cannot see this picture, I am sorry for it has probably been removed from the place I posted it online as I cannot attach pictures physically to this post.  If someone here has a way to permanently host this picture and post it to this thread permanently, that would be wonderful.
    In summary: all usb ports/headers have only four pins associated with it (VCC, USB+, USB-, GND).  If the connector (whether it's one big connector or individual sockets) to your front/top usb port has 5 sockets, don't connect the 5th socket to anything.  That goes for any case/motherboard combination.  This is what i'm talking about above.  I have no idea why motherboard and case manufacturers have a 5th pin involved in any way on either the pin or socket side.  It is not used for usb.
    EDIT:  I just noticed this has already been discussed in the trouble shooting guide in the above sticky post.  oh well, now we have a pretty picture to go along with it (i hope).

    :-D)Hello guys,
    as promised I come back here to give the results of my tests... and I have to say that you saved my day (even if I had to open back 60 secured cases).
    So the solution was the right one, when I unplugged the "ground" end of the front USB connector cable from the USBOC pin, those connectors finally worked as expected with USB 2.0 compliant devices.
    So thank you really much for this very usefull information !
    And even if maybe it's not only MSI's fault, I still believe that more information on those connectors in the user's manual would be really usefull (who knows what USBOC means except a few people and who could imagine that pluggin on it a "ground" cable would make it unserviceable ??). And who ever saw a user's manual bundled with a case ?? it's pretty unusual  
    Hope that someone at MSI will read that and take it into consideration, not for me (because now I'm aware) but for the thousands other consumers that will feel a little bit "annoyed" with that issue. I don't think that adding one line about it in user's manuals would be so much expensive  
    But I'm quite lucky myself... being able to understand and write english (even if I still have some progress to do  ) gave me the possibility to find the solution... but a lot of my french fellows can't do that... and there's no french forum here... How can they do ? They rely on user's manual
    Best regards,
    Nicolas

  • Having problems with USB cable, please HELP!

    While trying to download aim/aol I was having problems with my USB cable and my phone being connected, it was like they were showing they were conneted but when I tried to download aim it said no drivers were recognised. My phone was giving me the option when the USB cable was plugged in asking me if I wantd to do something to do with the media mass storage.
    Anyway, once the drivers were downloaded to my comp and I plugged USB cable into my phone and comp i'm no longer being asked on my blackberry about the mass storage, my phone doesn't seem to be recogniaing tht it's linked up to my computer at all even though it's showing the little plug thing in my blackberry and coming up on the computer.
    Is there anybody out there who can help me?!
    Please!
    Cheers!

    Go to Options -> Media Card -> Mass Storage Mode Support: On
    tanzim                                                                                  
    If your query is resolved then please click on “Accept as Solution”
    Click on the LIKE on the bottom right if the post deserves credit

  • Still having problems with wireless connections with the new lions os

    is anyone else still having problems with there wireless connections on the new lions os?  What a poor job apple did

    No.

  • Ibook G4 having  problem with airport connection when using secure network

    Hi,
    I am currently using a brand new Macbook. I am connected wirelessly to a Comcast network through my Netgear Wireless-N 150 router model WNR 1000. The problem I am having is with the 4 year old ibook when I go to use the airport and connect to my existing network it says the password is incorrect. I spent time troubleshooting this with Netgear and basically we found out that the ibook does connect with the network when there is no security at all.
    I erased the hard drive on this ibook to prepare it for sale and it is back to the factory settings. Is there some kind of firmware or drivers I am missing to use the airport as described?? I want to be able to show the buyer that the internet works etc. I also may want to install a few things on the ibook before the sale.
    Thanks a mil
    Message was edited by: omshanti

    Did you reset the wireless router to see if by default, it has a different
    wireless security then, than however it presently is set up?
    The question you pose appears to be marked "answered or solved."
    When you reinstall an OS X, the setup asks if you have an existing
    wireless connection, or if you will be getting a new one; by default,
    the setup will make the existing one the automatic one for OS X.
    You should not have to add passwords or other, unless there has
    been one set in KeyChain or for the specific wireless base in question.
    Tiger 10.4.x does not require you to have a set password for wi-fi,
    but you will find several levels of secure options available in OS X.
    Not sure why your setup and configuration is problematic. Usually,
    a totally new OS X installation is without issue. Sometimes, you
    may have to administer a base station via Ethernet cable before
    some configurations can use it, but an existing network should be
    easy, unless it already has a password security in place.
    The Mac will work without a password-protected wi-fi internet source;
    often it will 'just work' even when moved to a new environment and
    a neighbor's network, if not password protected, will appear among
    other options in your vicinity and it will be automatically available.
    Not sure if any newer OS X update parts, from the Combo update
    files to take Tiger 10.4 to 10.4.11, plus others, would help the Mac
    connect better to whatever wireless source of internet available.
    I've not had that issue, as you state, except for when someone has
    a protected network or passwords in place. Mine has passwords to
    keep unauthorized neighbors from easy access; just in case.
    In remote locations where few neighbors exist who could access wi-fi
    from a lone source, no wireless security settings at all, work just fine.
    I've done that; and found a little greater range was gained in signals.
    And in the city (largest town in state) a computer I'd set up for use in
    a password protected wi-fi network - later worked fine and found the
    new owner's own wi-fi network without issues; and I had let the OSX
    setup assistant do its job. If a local network is protected by WEP or
    WPA2, etc with a password, one would be needed to access it. If not,
    then the connection should be automatic.
    Good luck & happy computing!

  • Solve Problem with USB Connection / Read this it i...

    i can not load maps on my n97 mini. the error 'usb connection lost...' show on the screen in map loader but at the first day i had no problems.
    i wonder why. i look for driver, ovi suite, pc suite, usb at the pc, read in the forum and many more. but nothing solve the problem. after 2 days i use accidentally the original cable which comes with the nokia n97 mini (it is a ca-101) and all my problems are gone ! bevor i use an 'old' ca-101 cabel from my n82 and i can not upload a map but the handy is shown in the pc system with all drivers and no problems. only loading big megabytes data on the handy crashes the usb connection. with the n97 mini ca-101 cabel no problem with gigabytes. i look for another ca-101 cable from the 6220 from my wife and i have the same problems (i never used bevor this cable for a connection to any handy ! it was brand new !). it seems that 'old' ca-101 cabels do not handle big data with the n97 mini. i look on the gold spring clips in the micro usb and could see that the are a little smaller and not so high in the jack in the 'old' cables. all three cables are original from nokia and not from china ! if you are also problems look on the produkt id on the plastics. if the letters are gold you have a cable like my n97 mini cable, but if the letters are black on a silver button you have an 'old' cable.
    i hope i can help another with this maniac problem
    greetings

    I can verify this on win7 with latest PC suite.
    I was using the cable that came with my 6500s as I didn't want to tackle the rats nest of wiring behind my pc.
    This cable is a ca101 with silver writing on the plastic tab, made in China.
    Using this cable, my 6620c would not complete a backup, it would just sit for hours on 2-4%.
    Tested with the ca101 cable that came with the 6620c (gold writing, made in Thailand).
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    Thank you so much for finding this, it has been driving me crazy!

  • Having problem with wireless connection

    Hello Everyone,
    Ok, just like what the title says.. I had a roomate before that had the acct. and moved out with his account. I used to share Internet service with him using a WRT54G router and everything was fine. Since he moved out I had to get my own one on my name and started using the same router, but this time I decided to put a security on it, I lost my CD, so I decided to go to linksysfix and download the program. I installed it on my lap top and everything is working good, except for the desk top that my brother has. His also connected to the router that I have but cannot connect on the wireless, the desk top used to work before I downloaded from linksysfix. We can see the network name and the signal is high but won't connect and cannot go online. It's kinda weird, wireless used to work before the reset and installing from linksysfix. My lap top is working great, no problem with it, just the desk top. Desk top works using wire, but the wireless function is not working. Called tech support for linksys and dynex for wireless card and did not do the job. Last night I was trying still and was able to connect wireless on some network called STREAM, not sure where it is, but they're homepage shows up. anyway, any help would be greatly appreciated.. Thanks
    Ricky

    Go to: Start Menu>>Control Panel>>Network and Internet Connections>>Network Connections. In this window look for your wireless connection icon and right click on it, then click on properties. Here you will find the wireless tab to set up your wireless card.
    1.security = either WPA or WPA2
    2.Encryption = TKIP or AES
    3Security Key = whatever you decide to choose =Wwd3Rtt29PlsM =example
    ***Also you should plug in you wireless computer with the wired Ethernet cable while you are doing this, then dissconnect.
    Good Luck,
    ttech
    Message Edited by Ttech on 06-19-2008 07:38 PM
    Message Edited by Ttech on 06-20-2008 03:15 AM

  • Hi i am having problems with bluetooth connection! My phone wont pair with other devices! its an iphone 4s

    Hi all. I hope someone can help me with bluetooth connectivity? My phone wont pair up with other devices including my husbands iphone! He has the same problem!

    the problem is what bluetooth profiles you are expecting bluetooth is a long range of services and not all devices support all profiles
    here is a list of what ios devices support in terms of bluetooth profiles
    http://support.apple.com/kb/ht3647

  • Problems with USB connection and PC Suite

    Connecting your device to the PC via USB doesn´t always work as smooth as it should. You can either use the setup´s repair function or if you are experiencing more serious problems, you need to uninstall all Nokia software form your phone and get it back on to make to work again. 
    This is how you do it:
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    Go to Start --> Settings --> Control Panel --> Software, there you need to uninstall all Nokia software (Nokia PC Suite, Nokia Cable driver, PC Connectivity Solution ...)
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    Reboot your computer
    Download and install PC Suite here.
    Connect your phone via USB cable (if possible use a different USB jack) and follow the instructions on the screen.
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    For further questions ask within the board, for improvements on this article contact me.
    Thanks to users scoobyman, cricfancy and shuntfield for their collaboration.
    Message Edited by illinjah on 16-Aug-2009 07:02 PM
    By clicking the "Kudos!" or the "Solution?" button on the right you can say "Thank You" and you´ll show the author and others that the post is useful.
    The day we stop improving is the day we stop being good.

    Hi pudu
    thanks for the reply!
    so sad, that doesn't work for me. the same with Nokia_PC_Suite_6_84_10_3_eng_us_web.exe
    I have widcomm stack for bluetooth, there are lot of concerns about this,
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  • Windows 7 on iMac. Problem with wifi-connection.

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  • 27" 1TB iMAC having problem with iPhone 4 bluetooth pairing

    My new 27" iMac cant be paired with my iPhone 4. It always says not compatible device, and the iPhone suggest to forget the iMac device. Both iOS are updated.

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  • Problem with usb connection on Vista

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    Hi Bingmei,
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    Have you received word back yet from the trouble ticket that was issued? Please let us know so we can make sure that your issue is resolved. 
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