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I cannot get eth0 appear as result of ifconfig. Only lo is present. Moreover,

sudo  ifconfig eth0 up

returns: "eth0: ERROR while getting interface flags: no such device", and

lspci | grep net

returns: "04:00.0 Ethernet controller: Atheros Communications Inc. Device 10a1 (rev 10).

I'm using Ubuntu 12.04.02, 64 bit. It is a new laptop, Asus G750J. I made a local repository for "precise main" and "precise-updates main" and run "apt-get update", "apt-get upgrade" and also build-essentials with success. When cable from router is connected to laptop, router led goes green.

Content of "interfaces":

  • auto lo
  • iface lo inet loopback
  • auto eth0
  • iface eth0 inet dhcp.

Also, reset it several times. At boot, it gives the message with waiting for network connection, and then 60 more seconds. I'm out of ideas for now. Any help will be appreciated.

EDIT: sudo lshw -c network returns "network unclaimed" and physical ids of 0 for both Broadcom network controller and Aetheros ethernet controller. I also installed exactly this same driver: http://zr6aic.blogspot.ro/2013/01/ethernet-network-interface-not-detected.html

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Ok, it finally seems to work. Answering for the case that someone might get into the same trouble. After I had build-essentials installed, I downloaded and compiled kernel.org/pub/linux/kernel/projects/backports/stable/v3.8.3/… . (for installation instructions, see link in question or: run ./scripts/driver-select atlxx, make, sudo make install, sudo make unload and then a reset. After reset I could select a MAC for wired connection, and also eth0 was present in output of ifconfig. –  Bogdan Rus Jul 7 '13 at 0:37
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