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Ethernet port not working after installing Leopard

804 Views 7 Replies Latest reply: Dec 25, 2007 6:53 PM by Russa RSS
stupidman Calculating status...
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Nov 17, 2007 4:11 AM
All fine when in 10.4.8, after installing 10.5 it no longer works.
Says cable is unplugged, checked the cable on other devices and the router and cant see any problems on system profiler.

Any ideas ?
Dual 2 GHz PowerPC G5, Mac OS X (10.5.1)
  • ecubed Calculating status...
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    Nov 17, 2007 10:19 AM (in response to stupidman)
    No help, but the same thing happened to me when I upgraded to 10.5.1. Fortunately I didn't upgrade my Powerbook to Leopard so I'm still in business.
    imac Core Duo, Mac OS X (10.5.1), PowerBook 17"
  • emad&c Calculating status...
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    Nov 18, 2007 10:37 AM (in response to stupidman)
    hi, same thing to me but I caused the problem. In my AEBS settings under manual it give me the option of full duplex, 1000 base t. I thought the AEBS and all new macs came with 1000 baset and so I changed it. Guess what ethernet unplugged message., changed back to 100 base t and is working again. Am thinking, Also I need to order a new patch cable as my cable was only catagory 5 instead of 6. Hopefully it will come tommorrow.
    IMAC, macbook, shiny new 80g ipod,ipod touch,Airport extreme, Mac OS X (10.5)
  • Alan Levine Calculating status...
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    Dec 25, 2007 9:53 AM (in response to stupidman)
    Same issue here. Under Tiger everything worked with ethernet coming from a NetGaer 5 port switch (others go to my AEBS, and a PC). Airport works fine. The old ethernet cable is not recognized; I tried the lines that go to the PC and the AEBS and none are recognized. I've read elsewhere something about needing newer CAT-6 cable... that is next step.
    MacBookPro, Mac OS X (10.5.1)
  • Russa Level 4 Level 4 (1,315 points)
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    Dec 25, 2007 10:44 AM (in response to stupidman)
    I heard that the Tiger and Leopard System Preferences/Network/Ethernet Services are incompatible. I suspect it is corrupted. I suggest you go into the System Preference/Network window and delete the old Ethernet service, by pressing the "-" sign, and add a new Ethernet service with the "+" sign in the lower left hand corner of the window.

    Reboot and try again.
    MacBook Pro 15" 2.4GHz with 4Gbytes, Mac OS X (10.5.1), Cox cable, ZyXEL P-330W v1.7, PAP2 v2 for Vonage, G-Drive Q for TM
  • Alan Levine Level 1 Level 1 (25 points)
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    Dec 25, 2007 5:25 PM (in response to Russa)
    Thank you Russa, that was 100% correct! The new settings work great and saved me a wasted trip trying to buy cable. Now who would have known? How do these tidbits ever get to the Knowledge Base? I always get answers in the forums, hardly ever in the KB
    MacBookPro, Mac OS X (10.5.1)
  • dechamp Level 4 Level 4 (3,495 points)
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    Dec 25, 2007 5:49 PM (in response to emad&c)
    Cat6 cables are not required or beneficial for most home situations. The purpose of Cat 6 cables is to be able to work around a electronically "noisy" area, or to pinch out a little bit more throughput in a Gigabit network.

    If you change a cable to Cat6 it will still work at the Cat5 or 5e standard if any of your other cables are not Cat6.

    I'm running GB ethernet using hundreds of feet of Cat5e wiring into several rooms. No problems with Leopard.
    MacBookPro, iMac 20, Dual G4 1.42 Leopard Server, Mac OS X (10.5.1)
  • Russa Level 4 Level 4 (1,315 points)
    There are alot of people complaining about Leopard Ethernet and Wireless on these forums. Its amazing how some symptoms can mislead potential solutions. Alot of people out there are getting spiked on Leopard being terrible and unreliable because of this network thing.
    MacBook Pro 15" 2.4GHz with 4Gbytes, Mac OS X (10.5.1), Cox cable, ZyXEL P-330W v1.7, PAP2 v2 for Vonage, G-Drive Q for TM

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