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Old Sep 9, 2011, 05:16 AM   #1
standingquiet
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New Mac Mini Slow Internet through Ethernet

Hey Guys

I have a new i5 Mac Mini and has been working fine but i keep having ethernet problems this is the 2nd time its happened now but my internet speed just drops from 22mb to 3.5mb.

First time it done it i thought i was the cable so swapped them over and it worked fine and now its doing it again.

WiFi is fine as you can see



But when connecting via ether net



Ive checked the ethernet network settings and for some reason its at 10mbps and if you change it to 100/1000mbps it says cable is not connected. I'm using a CaT5e cable.

Help

Matt
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Old Sep 9, 2011, 05:31 AM   #2
mdgm
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So a single cable runs all the way from your Mini to the modem or do you have other devices in-between?

How long is the cable?
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Old Sep 9, 2011, 05:36 AM   #3
standingquiet
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Originally Posted by mdgm View Post
So a single cable runs all the way from your Mini to the modem or do you have other devices in-between?

How long is the cable?
its connected directly to router with 2 metre cable.
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Old Sep 9, 2011, 05:46 AM   #4
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that's kinda weird your upload time is pretty much the same! Have you tried a different port and cable?
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Old Sep 9, 2011, 05:49 AM   #5
standingquiet
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that's kinda weird your upload time is pretty much the same! Have you tried a different port and cable?
the first time it done it a few weeks ago i changed the cable and fixed it but now its doing it again the problem must be else where.
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Old Sep 9, 2011, 06:23 AM   #6
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Call your ISP provider and they may do a test at their end to trouble shoot.

Good luck
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Old Sep 9, 2011, 06:44 AM   #7
standingquiet
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Call your ISP provider and they may do a test at their end to trouble shoot.

Good luck
It is just the Mac Mini, Everything else connects fine. PC, Laptop, Xbox connects at 100/1000mbps but Mac Mini only 10mbps
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Old Sep 9, 2011, 08:05 AM   #8
mdgm
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Sounds like it could be an incompatible router then.
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Old Sep 9, 2011, 09:07 AM   #9
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Originally Posted by mdgm View Post
Sounds like it could be an incompatible router then.
I have never heard a router that doesn't like certain computers.
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Old Sep 9, 2011, 09:50 AM   #10
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I left the Ethernet unplugged for a while plugged it back in and it went back to 1000Mbps and the speed went back up.




I still don't understand why it is doing it and not on my other computers including MacBook Pro.

Matt
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Old Sep 9, 2011, 08:23 PM   #11
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The Broadcom ethernet adapter in the Mini is one with "extended" range GigE capability. For example, the 2011 mini is the only device in our household that can connect at GigE speed on the built in jacks. All other devices max at 100M. This "special" capability negotiation may be causing your problem.
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Old Oct 3, 2011, 12:45 AM   #12
balamuralig
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Smile Works fine now

My Mac mini wireless was working fine but the ethernet was extremely slow (Crawling). After many hours of debugging, I compared both the configuration and found on the ethernet in the Advanced settings - DNS tab the IP was set to 127.0.0.1. I changed it to the router IP (192.168.0.1) and it resolved the issue. Now both wireless and ethernet are very fast.

I think the default configuration of 127.0.0.1 is the culprit and changing it to router IP resolved the issue.

Please give this a try and hope it helps others.
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