Ethernet cable said 'unplugged' but it is - Power Mac G5

Hi,

I've just installed OS X Leopard (10.5) on an old Power Mac G5 (Dual 2 GHz) : everything went well but impossible to connect to my local network using ethernet cable.

I've test the cable : working perfectly on my MacBook Pro, as well as with another iMac G4 (also with Leopard).

Tried to restart the router, but no way : in system preferences, I still have 'Network cable is unplugged' ... )

Any help kindly appreciated !!
wylesightAsked:
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JBYoung85Commented:
Hi, One thing to check would be the ethernet port on the laptop. Since it is an old computer, the port may be damaged and require replacement. I'd look in the port and check for any loose or damaged pieces. If any of the internal connections look worn out or are missing, then that could be the source of your problem.
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jhyieslaCommented:
Take a look in System Profiler to see if that gives you any clue and/or try running the Apple hardware test disk that should have come with Leopard to see what it has to say.
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wylesightAuthor Commented:
Thank you for your quick replies.

The machine is old but very clean. The ethernet port seems all right.

Nothing wrong in system profiler : network card is there and some parameters also...
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jhyieslaCommented:
Do you have the hardware test disk? Not sure that it says specifically that on it, but you should have a disk other than the install disks.
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wylesightAuthor Commented:
I've looked again into system profiler, and I don't see anywhere a 'Ethernet' content (in the left column).

All I have is a 'Locations' item in the 'Network' section, and there, I have some informations about Ethernet :

BSD Device Name : en0

Hardware (MAC) Address : 00.0a:95:ae: .....

Maybe is this normal, but if it could help ....


I've installed latest leopard combo update (10.5.7) but changed nothing...


Maybe I've got the wrong driver ?


On the top of that, I've got 3 Power Mac G5 (Dual), and network is not working on all of them !!

I've install each Leopard version on a iMac G4 to test if something was wrong with the setups, and it's working like a charm...

So to resume :

> cable has been tested and it's good on both iMac G4 and MacBook Pro (2008)
> Install Discs are ok (each tested on the G4)
> rear ports looks ok
> same problem on 3 different machines !! (all Power Mac Dual G5)

HOpe that can help[.... I really need help !!
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wylesightAuthor Commented:
I don't see any hardware Disk coming with Leopard....

I'm trying the D key...
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wylesightAuthor Commented:
I don't have original install disk for the Power Macs. As each hardware test is specific, I can't do hardware test...
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jhyieslaCommented:
Not sure about the naming in System Profiler.  Most looks like what I have, but I'm running on an Intel box.  I'm attaching a link about the hardware test, there's a section near the bottom about the PPC.  Not familiar enough with the disks that came with PPC Macs.  Although would assume that if you bought a Leopard disk that's meant for PPC, the instructions in the link may be valid.

http://www.thexlab.com/faqs/aht.html

Having said that...if you are having the same problem on multiple G5's it's most likely not the hardware.

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jhyieslaCommented:
OK... stupid thought... try going to the network preferences on one of the G5's and manually input IP information for this Mac (IP, mask, gateway, DNS, etc).

I know that this sounds like a hardware error based on your cable message, but give this a shot.
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wylesightAuthor Commented:
Nice one indeed, but still stuck : always this 'cable unplugged' status ...
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wylesightAuthor Commented:
wow wow, wait a minute !!

It was the right input !!  Problem was not in IP, sunet mask etc... but in adavanced options, The ethernet duplex mode. I've made it match my working Mac settings, and now it's working !!

A great thank you jhylesia ))
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jhyieslaCommented:
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jhyieslaCommented:
Great... sorry looks like we crossed posted on that last one... but glad you got it working.
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wylesightAuthor Commented:
Great input Jlylesia !

Problem was not hardware but advanced ethernet settings.

I've made them match a working Mac connected on my network, and it worked.

The settings that needed to be changed were :

Speed (10baseT/UTP)
Duplex (Full-duplex, flow-control)
MTU (standard 1500)

I also matched IP, subnet mask and DNS in the standard settings.

Tsss.. Automatic network configuration work great in 99% of cases, but sometimes it's good to go deeper !
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