I know that there are a lot of other forums about this topic and I have read a lot of them, but as I am not an expert, I don't know how to solve my problem.
I have Acer Travelmate 2490 notebook. I wanted to upgrade from kubuntu 11.04 to 11.10 but something went wrong and finally I had to delete 11.04 and install 11.10 as a new system. Previously I had some help with the upgrades and every problem was solved, but now I did it on my own, and I don't remember to the solutions. My biggest problem is that my wifi doesn't work. When I click on knetwork manager I see WLAN unavaible (it's enabled) and if I click on it I see this:
No IP address.
Based on the things I read in other forums I could find out the type of my wifi card with this command: "~$ lspci -vvnn | grep 14e4" and I got this:
"06:01.0 Ethernet controller : Broadcom Corporation BCM4401-B0 100Base-TX [14e4:170c] (rev 02)
06:02.0 Network controller : Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller [14e4:4318] (rev 02)"
I would really appreciate if someone could help me. Please write exactly what should I do like you would explain something to an idiot