I've been using Ubuntu since Breezy and have never experienced this problem.
I have a desktop PC which I built last year.
I'm connected to Internet by DSL modem/router.
3 other PCs are also connected and work fine.
I successfully ran #! (Crunchbang) for a while.
No connection problems with either.
Never installed M$ Windoz on this box.
No duel boot, just one distro installed at a time.
But when I install Xubuntu 12.04 there is no Internet connection.
I installed it twice, with #! inbetween.
Earlier Xubuntu worked fine in Virtual Box (in #!).
I ran the following two tools:
dmesg | grep eth
[ 0.311293] i2c-core: driver [aat2870] using legacy suspend method
[ 0.311294] i2c-core: driver [aat2870] using legacy resume method
[ 2.228407] r8169 0000:02:00.0: eth0: RTL8168d/8111d at 0xffffc90000650000, 00:30:67:c7:a1:ce, XID 081000c0 IRQ 41
[ 2.228409] r8169 0000:02:00.0: eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]
[ 7.862693] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 8.193545] r8169 0000:02:00.0: eth0: link down
[ 8.193550] r8169 0000:02:00.0: eth0: link down
[ 8.194910] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 9.943699] r8169 0000:02:00.0: eth0: link up
[ 9.944074] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
eth0 Link encap:Ethernet HWaddr 00:30:67:c7:a1:ce
inet6 addr: fe80::230:67ff:fec7:a1ce/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2594 errors:0 dropped:0 overruns:0 frame:0
TX packets:815 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:485216 (485.2 KB) TX bytes:84844 (84.8 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:10000 errors:0 dropped:0 overruns:0 frame:0
TX packets:10000 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:759876 (759.8 KB) TX bytes:759876 (759.8 KB)
When I run ifconfig with other distros installed
I get my IP address and they connect fine.
As you can see, no IP address here!
What do I need to do to get connected to the Internet.
Thanks in advance.