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#1 2007-05-11 8:23 pm
- brainiac_7
- % rm -r brainiac_6
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- From: CT Shoreline
- Registered: 2000-10-09
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Beat NIC?
I'm on a cable modem. I've lost IP connectivity on my desktop G5. All our other Macs can connect via our router and Airport.
Things I've tried (and that have failed):
Log in as different user
Connect direct to cable modem
Try different router port
Swap new Ethernet cable
Despite Airport working fine from our router, I reset the router and cable modem
Ping, traceroute, etc.
Airport is out of range for the desktop, otherwise I would check this too
Sound like a dead NIC to you? Other things I haven't thought to try? I'll shut it down for the night. Over the years, I've been surprised at the number of Mac ills that have been cured in this simple way. More later.
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#2 2007-05-11 8:35 pm
- Nefarious
- Snow Meiser
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Re: Beat NIC?
Yasu or Archive and Install are my only remaining ideas other than the bad NIC.
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#3 2007-05-11 9:49 pm
- D'Eyncourt
- OMGDICTATOR
- Registered: 2001-12-27
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Re: Beat NIC?
Bad or wrong NIC drivers?
If this is a NIC that came with the Mac, try running the appropriate combo update instead of using the update (the latter only updates from, say, 10.4.8 to 10.4.9, while the former will update any 10.4.x system to 10.4.9).
If this is an add-in card or such, try re-installing the driver for the NIC.
Or how about incompatible settings between your Mac's NIC and the router? If your NIC is set to work with 100 Mb Ethernet and your router can only supply 10 Mb Ethernet then they won't be able to talk to each other. Unfortunately I think that the built-in Ethernet in Mac are set to autoconfig so it should negotiate the settings properly (on the other hand: perhaps your Mac's NIC is faulty because it cannot match the speed of the router because of bad hard-/soft-/firmware?).
Have you tried to connect one of your other (portable) machines to the router's Ethernet ports? That way you could be sure that a given port on the router and a specific cable are working correctly.
BOYCOTT SONY
"I think the question now is not whether you went to Vietnam or whether you didn't, whether you fought in the war or fought against the war. I think the only question is whether we can find a president smart enough never to make a mistake like that again"--Molly Ivins, way back in 1992
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#4 2007-05-11 11:24 pm
- djdawson
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- From: Minnesota, USA
- Registered: 2001-04-19
- Posts: 1860
Re: Beat NIC?
I'd try connecting your G5 directly to one of your other Macs and see if the port comes up. You'll have to configure a static IP addres son both of them, or else use Internet Connection Sharing on the other one to share the ethernet, which will also cause it to provide an IP address to your G5 via DHCP. You could also try just configuring a static address when connected to your cable modem or router, since a DHCP failure could cause this sort of trouble. Are you seeing any link lights on your router ports? If not, that's not looking so good. You might want to peek into the RJ-45 connector on your G5 just to make sure all the little connection wires look right and that none of them appear to be out of place. I've seen them get disturbed if a cable gets yanked too hard.
HTH - Good luck!
Dana
[MA]{O}FSG
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#5 2007-05-12 5:33 am
- brainiac_7
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Re: Beat NIC?
Wow, thank you everyone, and hello DJ! Good to see you again! I'll check the physical connection, the jack, in the Mac.
My hunch was correct. I shut the desktop down for the night and now it's back online, working fine. It's been on for years now (albeit asleep when inactive), with the occasional restart after running Cocktail or System Update.
Still, this worries me. The problem might recur. We get surges, brownouts and blackouts here. I've got APSes on all things Mac (and the router), so I wonder how this might add up. The telltale sign is our vent system, which needs a reset after a surge/brownout. I noticed I had to reset it a few days ago, on returning home.
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