Results 1 to 12 of 12
  1. #1
    Mac keeps losing internet conneciton

    Member Since
    Jan 29, 2010
    Location
    Hampshire, UK
    Posts
    24
    Specs:
    27" iMac OS X Version 10.6 8
    Mac keeps losing internet conneciton
    Hi, I have an iMac 10,1 running on Mac OS X Version 10.6.8. I also have a PC and both are hard wired (connected) to a Netgear Router, however, the iMac loses its connection constantly but the PC doesn't so, that seems to suggest there's nothing wrong with the PC nor the router connection so, does anyone have any idea please, why the Mac loses connection anythying up to 20 times a day! It's so frustrating. We've already swapped the leads so there's nothing wrong with those either. Thank you for reading. I'd be delighted to hear anyone's thoughts and suggestions please.

  2. #2
    Mac keeps losing internet conneciton
    mrplow's Avatar
    Member Since
    Oct 01, 2007
    Location
    UK
    Posts
    6,759
    Specs:
    27" iMac i7 (2011) 10.10, iPhone6, iPad Air 2, AppleTV2
    Is the router using DHCP? Any static IP's on the network?

    What are the symptoms of losing the connection?
    Does it lose just internet or both internet and network?
    External hard disk acquisition addict - but admitting the problem is the first step to a robust backup

    Please use the reputation system if you think you've been helped - top right of this post

  3. #3
    Mac keeps losing internet conneciton

    Member Since
    Jan 29, 2010
    Location
    Hampshire, UK
    Posts
    24
    Specs:
    27" iMac OS X Version 10.6 8
    Not sure what you mean by network and internet, but, it loses connection to the internet and also e-mails but, the PC is still working and receiving e-mails and getting onto the internet on the same router. I hope that answers what you're asking, thanks for trying to help.

  4. #4
    Mac keeps losing internet conneciton

    Member Since
    Jan 29, 2010
    Location
    Hampshire, UK
    Posts
    24
    Specs:
    27" iMac OS X Version 10.6 8
    Hardware Overview:

    Model Name: iMac
    Model Identifier: iMac10,1
    Processor Name: Intel Core 2 Duo
    Processor Speed: 3.06 GHz
    Number Of Processors: 1
    Total Number Of Cores: 2
    L2 Cache: 3 MB
    Memory: 4 GB
    Bus Speed: 1.07 GHz
    Boot ROM Version: IM101.00CC.B00
    SMC Version (system): 1.53f13
    Serial Number (system): W8940B2S5PE
    Hardware UUID: 736454B0-32A9-5328-8BE7-404034F36798

  5. #5
    Mac keeps losing internet conneciton

    Member Since
    Jan 29, 2010
    Location
    Hampshire, UK
    Posts
    24
    Specs:
    27" iMac OS X Version 10.6 8
    It's the 27" iMac

    Please let me know if you need more info. Thanks. Di

  6. #6
    Mac keeps losing internet conneciton

    Member Since
    Jan 29, 2010
    Location
    Hampshire, UK
    Posts
    24
    Specs:
    27" iMac OS X Version 10.6 8
    I'm off to work now for a few hours but would be delighted to hear your thoughts please mrplow, thanks.

  7. #7
    Mac keeps losing internet conneciton
    mrplow's Avatar
    Member Since
    Oct 01, 2007
    Location
    UK
    Posts
    6,759
    Specs:
    27" iMac i7 (2011) 10.10, iPhone6, iPad Air 2, AppleTV2
    OK.

    Can you try a couple of things for me?
    Disconnect the ethernet cable from the PC.
    Try the Mac. Does it still lose connection?

    If so:
    open Finder, navigate this file on your MacHD
    /Library/Preferences/SystemConfiguration/preferences.plist
    rename it to
    /Library/Preferences/SystemConfiguration/preferences.old
    Restart your Mac and try again.

    If not:
    You have an IP clash - which I can help you resolve.

    Post back either way.

    Good luck
    External hard disk acquisition addict - but admitting the problem is the first step to a robust backup

    Please use the reputation system if you think you've been helped - top right of this post

  8. #8
    Mac keeps losing internet conneciton

    Member Since
    Jan 29, 2010
    Location
    Hampshire, UK
    Posts
    24
    Specs:
    27" iMac OS X Version 10.6 8
    Hi. I did the first bit, no change.

    When I went to change the /preferences.plist to /preferences.old, it told me I did not have the permissions to change it and every which way.... it would not save it or let me overwrite .plist..!! Could you please guide me?

    Thanks so much for your help. I really appreciate it.

    Thanks
    Di

  9. #9
    Mac keeps losing internet conneciton

    Member Since
    Jan 29, 2010
    Location
    Hampshire, UK
    Posts
    24
    Specs:
    27" iMac OS X Version 10.6 8
    The IP clash sounds quite logical so, if I can't change the .plist to .old, should you perhaps talk me thru how to check if there's an IP clash? Thanks.

  10. #10
    Mac keeps losing internet conneciton

    Member Since
    Jan 29, 2010
    Location
    Hampshire, UK
    Posts
    24
    Specs:
    27" iMac OS X Version 10.6 8
    Hello mrplow

    Okay.... we closed down the pc overnight and the iMac had held its internet connection overnight. I've done it again this morning and closed the pc down for a few hours and the iMac is still fine. So, does that help you perhaps with helping to tell us what we need to do? I do hope so, thanks.

    I'm in the UK by the way. Not sure if you're in the UK or USA? I'm off to work again now for a few hours. I'd be grateful to hear what you think we might be able to do.

    Thank you.
    Kind regards
    Di

  11. #11
    Mac keeps losing internet conneciton
    mrplow's Avatar
    Member Since
    Oct 01, 2007
    Location
    UK
    Posts
    6,759
    Specs:
    27" iMac i7 (2011) 10.10, iPhone6, iPad Air 2, AppleTV2
    I'm in the UK. At work myself at the moment but it definately sounds like an IP issue.

    To avoid a clash you can go one of two ways:
    - have static IPs on both machines (not ideal, especially if you have other devices on the network)
    - have dynamically assigned IPs using DHCP on the router.

    It may be that you need to have a static IP on one device but with your Netgear router you can still achieve that.

    Once you're home post back with the version of Windows you're using and the model of Netgear router and I'll give you some specific instrcutions if you would find them useful.
    External hard disk acquisition addict - but admitting the problem is the first step to a robust backup

    Please use the reputation system if you think you've been helped - top right of this post

  12. #12
    Mac keeps losing internet conneciton
    mrplow's Avatar
    Member Since
    Oct 01, 2007
    Location
    UK
    Posts
    6,759
    Specs:
    27" iMac i7 (2011) 10.10, iPhone6, iPad Air 2, AppleTV2
    Here's some info and setting up the Windows PC and Mac to use dynamically assigned IPs from the router.

    If your settings are already like this then we can look at the router settings in due course.

    On your PC
    1. go to Control Panel > Network and Internet > Network and Sharing Center.
    2. In the "View Your Active Networks" section, select Local Area Connection.
    3. Go to Properties - The Local Area Connection Properties window will display
    4. Highlight Internet Protocol Version 4 (TCP/IPv4) and click on Properties - The Internet Protocol Version 4 (TCP/IPv4) Properties window will display
    5. Click Obtain an IP address automatically
    6. Click obtain a DNS server automatically
    7. Click OK etc until you've dismissed all screens.
    8. Restart the PC

    On your Mac
    1. Open System Preferences
    2. Click the Network icon
    3. From the Location drop-down list - select Automatic
    4. Select Ethernet
    5. Select Using DHCP for Configure IPv4: pull down menu
    6. Click Apply
    7. Restart your Mac
    External hard disk acquisition addict - but admitting the problem is the first step to a robust backup

    Please use the reputation system if you think you've been helped - top right of this post

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. losing internet connection
    By gastro in forum OS X - Operating System
    Replies: 3
    Last Post: 06-27-2012, 02:27 AM
  2. Losing internet connection
    By JsHwrdul in forum Apple Notebooks
    Replies: 8
    Last Post: 01-04-2011, 01:58 AM
  3. 5 macs in house but 1 keeps losing internet?
    By sarahjwhitmarsh in forum Internet, Networking, and Wireless
    Replies: 0
    Last Post: 04-19-2010, 09:32 AM
  4. Losing Internet connection
    By kiwineman in forum Switcher Hangout
    Replies: 2
    Last Post: 11-05-2007, 12:16 AM
  5. losing internet connection
    By Annie in forum Switcher Hangout
    Replies: 43
    Last Post: 08-06-2006, 12:57 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •