My wifi does not work

[montey]

on my dell inspiron 6400 the default wifi card thing does not work but when i plug in a wifi usb it works fine can anyone help plz

[rokytnji]

My Dell E5500 says

Code:

$ inxi -Fxz
System:    Host: biker1 Kernel: 3.18.0-linuxlite i686 (32 bit gcc: 4.8.2)
           Desktop: Xfce 4.11.6 (Gtk 2.24.23) Distro: Ubuntu 14.04 trusty
Machine:   System: Dell (portable) product: Latitude E5500
           Mobo: Dell model: 0DW635 Bios: Dell v: A17 date: 09/27/2011
CPU:       Dual core Intel Core2 Duo T7250 (-MCP-) cache: 2048 KB
           flags: (lm nx pae sse sse2 sse3 ssse3 vmx) bmips: 7974
           Clock Speeds: 1: 1600 MHz 2: 1200 MHz
Graphics:  Card: Intel Mobile 4 Series Integrated Graphics Controller
           bus-ID: 00:02.0
           Display Server: X.Org 1.15.1 drivers: intel (unloaded: fbdev,vesa)
           Resolution: [email protected]
           GLX Renderer: Mesa DRI Mobile Intel GM45 Express x86/MMX/SSE2
           GLX Version: 2.1 Mesa 10.1.3 Direct Rendering: Yes
Audio:     Card Intel 82801I (ICH9 Family) HD Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture v: k3.18.0-linuxlite
Network:   Card-1: Broadcom NetXtreme BCM5756ME Gigabit Ethernet PCI Express
           driver: tg3 v: 3.137 bus-ID: 09:00.0
           IF: eth1 state: down mac: <filter>
           Card-2: Broadcom BCM4312 802.11b/g LP-PHY
           driver: b43-pci-bridge bus-ID: 0c:00.0
           IF: wlan2 state: up mac: <filter>
Drives:    HDD Total Size: 121.3GB (43.7% used)
           ID-1: /dev/sda model: APPLE_SSD_SM128 size: 121.3GB
Partition: ID-1: / size: 8.6G used: 5.1G (64%) fs: ext4 dev: /dev/sda1
           ID-2: /home size: 103G used: 45G (46%) fs: ext3 dev: /dev/sda2
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 46.5C mobo: N/A
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 166 Uptime: 6 min Memory: 447.5/1976.5MB
           Init: Upstart runlevel: 2 Gcc sys: 4.8.2
           Client: Shell (bash 4.3.111) inxi: 2.2.1

What does yours say?

[valtam]

What rokytnji means to say is open a terminal, type in the following command:

Code:

inxi -Fxz

and paste the results here.