Hi,
i upgraded ubuntu from 11.04 to 11.10 and wifi is not working anymore. my pc is connected to a router.
Now Internet is working just with ethernet.
i've got a Atheros card.
on the menu bar on the top, the wifi icon disappeared. and the wifi connection disappeared as well.
in "additional driver" the list is empty.

this is the result for ifconfig:
Code:
marconicole@desktop:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr e0:cb:4e:c7:9e:74  
          indirizzo inet:192.168.1.3  Bcast:192.168.1.255  Maschera:255.255.255.0
          indirizzo inet6: fe80::e2cb:4eff:fec7:9e74/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13442 errors:0 dropped:0 overruns:0 frame:0
          TX packets:13305 errors:0 dropped:0 overruns:0 carrier:2
          collisioni:0 txqueuelen:1000 
          Byte RX:11762552 (11.7 MB)  Byte TX:2127781 (2.1 MB)
          Interrupt:44 

lo        Link encap:Loopback locale  
          indirizzo inet:127.0.0.1  Maschera:255.0.0.0
          indirizzo inet6: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:12 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:0 
          Byte RX:740 (740.0 B)  Byte TX:740 (740.0 B)
I've already read a lot of threads and surfed on internet without finding a solution. I hope someone will help me. Thanks in advance.