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Network issue with my first build

Network issue GA-Z77N 165.254.xxx.xxx Internet connection lost

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#1
hmulders

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Hi
recently I build my first mac based on below config:

Gigabyte GA-Z77N-WiFi Motherboard;
Intel Core i7-3770 3.4Ghz LGA1155 Qaud core;
TX650 Power supply;
EVGA GeForce GTX650 SC 1GB Graphics card;
Corsair Vengeance DDR3, 1600-16GB Kit (2x 8GB)
Sandisk Extreme 240 GB SSD
DSDT for the Motherboard used (F2)
Mountain Lion from App store installed
Info how to build gathered form another site.
In the first few days the mac was working without any issues but suddenly I did not get internet connection.
looking in the networksettings that where set to configure Ipv4 Via DHCP the ip address was far out of the in house ip range.
Is was in the order of 165.254.{censored}.{censored} and subnetmasking was changed to 255.255.0.0
I could not ping to the router. other computer in house work always without any issues
Power down and up sometimes fix it but also some times several start ups don't help.
I tried different ports on the hub and a different hub. Still not stable
I tried different network drivers and performed a cold start several times!
Works fine some days and gets flakky again.
On the other site no solution found but noticed that others face the same issue.
Does anyone here face the same isue or is this a known issue with this particular Gigabyte board?
Thanks a lot in advance for help or suggestions

Best regards

Hans


#2
iFIRE

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Welcome to Insanelymac , edit your post and read this and this. p.s : pls read the forum rules !!!

#3
hmulders

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Thanks for pointing me to the rules.
My apologies!
I edited the post and thank you to make me aware of the reason why, I will respect it.

#4
iFIRE

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Thanks!!! and welcome!!! but your problem is with Ethernet card or Wifi Card?

#5
hmulders

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Sorry forgot to mention.
It is the on board Network port, actually both ports face the same issue.
WIFI is not working at all but I was aware of that before I started the build.
Anyhow wireless is of no use for me, need fast (1GB Speed) due to NAS and Photoshop work.
the PCI slot is occupied by the graphic card so no option to install an extra ethernet card.

#6
iFIRE

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try this kext, and see if work for you Attached File  AppleRTL8169Ethernet.kext.zip   193.56KB   159 downloads

#7
hmulders

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Thanks I il give it try.
Keep you posted.

Best regards

Hans

#8
hmulders

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I tried to copy it to the system/library/extensions folder but comes up with an error that it cannot be installed.
Can it be that this kext is not compatible with Mountain Lion, or am I doing something wrong here?


#9
iFIRE

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copy? no, you need backup first your kexts and delete from S/L/E, now use App KextWizard for install the new kext, repairPermissions/Rebuild caches with KW and reboot

#10
hmulders

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Ok, thanks, I will do so.
Was not aware of the kext wizard.
looks like a great tool!

#11
hmulders

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I just did the install and it's working.
I will keep you posted if it stays stable.

Many thanks for the fast and great support.
Great forum :ihw_wow:

#12
hmulders

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As promised. Till now no problems!
Again thanks a lot for your help!





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