I own a HP probook 4530s.
I installed ubuntu 12.04 along side my windows 7 professional OS. While in window 7 everything works properly in terms of wire and wireless connection.
On Ubuntu 12.04 my wired connection doesn't work at all and wireless connection works only when I check off enable wireless then recheck enable wireless.
When I recheck enable wireless, the wireless connection only works for about 30 seconds then it goes offline again.