If you found these line in your kern.log, syslog Jan 27 13:54:51 xango3 kernel: [98499.658770] ERROR @wl_cfg80211_ get_station : Could not get rate (-1) Jan 27 13:54:51 xango3 kernel: [98499.658778] ERROR @wl_cfg80211_ get_station : Could not get rssi (-1) Jan 27 13:54:52 xango3 dhclient: DHCPREQUEST of 192.168.1.133 on eth2 to 192.168.1.2 port 67 Jan 27 13:54:56 xango3 kernel: [98504.646146] net_ratelimit: 22 callbacks suppressed Jan 27 13:54:56 xango3 kernel: [98504.646152] ERROR @wl_cfg80211_ get_station : Could not get rate (-1) Jan 27 13:54:56 xango3 kernel: [98504.646158] ERROR @wl_cfg80211_ get_station : Could not get rssi (-1) Jan 27 13:54:57 xango3 kernel: [98505.562569] ERROR @wl_cfg80211_ get_station : Could ... That mean something happen like in https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1107155 and Oedipe point me to the exit " Well, after some hours trying to solve the issue, i found the trick ! (it does work for me on a Lenovo with a BCM4...