I have dell inspiron 15r turbo 7520 with windows 8 pre installed. I have dual booted the system with Ubuntu 14.04 and I am new to ubuntu. Wi-Fi is showing to be connected but I am not able to access network. When I enter the command (lspci -nn | grep 0280)on terminal it shows Intel Corporation Centrino Wireless -N 2230 [8086:0887] (rev c4) For iwconfig it shows eth0 no wireless extensions. lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:"UG_4thyr" Mode:Managed Frequency:2.412 GHz Access Point: E8:BA:70:61:0A:E7 Bit Rate=13 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=61/70 Signal level=-49 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:23 Missed beacon:0
As you mentioned that you are using ubuntu 14.04 so do the following steps to correct the problem:
- Open Software & Updates and go to Additional Divers
- Install the fitting driver from there.
- Restart your system
- Now your WiFi will definitely work and it will show the WiFi signals (within its range) also.