Recently, I have installed Ubuntu 12.10 along with Windows 7 (after which I upgraded to Windows 8), but I have never been able to get any network connection on ubuntu, wireless nor wired. Works fine on Windows. I am on a HP ProBook 4510s.
My ethernet controller:
Marvell Technology Group Ltd. 88E8072 PCI-E Gigabit Ethernet Controller
My wireless controller:
Broadcom Corporation BCM4312 802.11b/g LP-PHY