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I have been using ubuntu 14.10 on my old computer for about 6 months with no problem.
I just installed ubuntu 14.10 on my new laptop (some Dell laptop) and it does not detect any wifi, although there is a connection available. (When I go back an forth to windows and back to Ubuntu, windows always detects the wifi connection and Ubuntu does not). Can you please help me with this issue? Thanks a lot!!!!

＊info from comment

rfkill list all gives me: 

0: dell-wifi: Wireless LAN Soft blocked: no Hard blocked: no

lspci -nnk | grep -iA2 net gives me:

00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network connection [8086:1502] (rev 04) 
    Subsystem: Dell device [1028:0493]
    Kernel driver in uses e1000e 
02:00.0 Network controller [0280]: Broadcom Corporation BCM43228 802.11a/b/g/n [14e4:4359] 
    Subsystem: Dell Wireless 1530 Half-size Mini PCIe Card [1028:0011]
    Kernel driver in use: bcma-pci-bridge
P.-H. Lin
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M W
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  • Can you add the results of the followings commands in terminal? rfkill list all and lspci -nnk | grep -iA2 net – Jeremy31 Feb 02 '15 at 21:11
  • "rfkill list all" gives me: 0: dell-wifi: Wireless LAN Soft blocked: no Hard blocked: no – M W Feb 03 '15 at 00:37
  • "lspci -nnk | grep -iA2 net" gives me: 00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network connection [8086:1502] (rev 04) Subsystem: Dell device [1028:0493] Kernel driver in uses e1000e -- 02:00.0 Network controller [0280]: Broadcom Corporation BCM43228 802.11a/b/g/n [14e4:4359] Subsystem: Dell Wireless 1530 Half-size Mini PCIe Card [1028:0011] Kernel driver in use: bcma-pci-bridge – M W Feb 03 '15 at 01:00
  • I added ** every place the line skiped: "lspci -nnk | grep -iA2 net" gives me: 00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network connection [8086:1502] (rev 04) ** Subsystem: Dell device [1028:0493] ** Kernel driver in uses e1000e ** -- ** 02:00.0 Network controller [0280]: Broadcom Corporation BCM43228 802.11a/b/g/n [14e4:4359] ** Subsystem: Dell Wireless 1530 Half-size Mini PCIe Card [1028:0011] ** Kernel driver in use: bcma-pci-bridge – M W Feb 03 '15 at 01:03
  • Try sudo modprobe -r ssb and see if wifi works, if not do sudo modprobe -r bcma – Jeremy31 Feb 03 '15 at 01:07
  • my battery is dead and I don't have a charger, I'll try it in the morning. Thanks a lot! – M W Feb 03 '15 at 01:15
  • neither worked..... :-( – M W Feb 03 '15 at 07:54
  • possible duplicate of Installing Broadcom Wireless Drivers – Fabby Feb 06 '15 at 22:54

1 Answers1

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You might need to install the proprietary driver for your Broadcom wireless card.

Please press the super key (the windows key) to open your dash, and search "driver" for it: Search driver in dash

And open the "Additional Drivers", select the driver and click "Apply changes":

Additional driver

P.-H. Lin
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  • "additional drivers" is empty by me. Can I download the driver on another computer and then install it on my ubuntu? If yes, where do I find it? Can I download it on windows and then transfer it with a disk-on-key to ubuntu? – M W Feb 03 '15 at 07:15
  • @MW Sure: https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx BTW, can your laptop reach the Internet with Ethernet port? You will need to update the software list first (run sudo apt-get update in your terminal) – P.-H. Lin Feb 03 '15 at 07:40
  • That driver should be on the DVD/USB that you installed Ubuntu with in /pool/restricted/b/bcmwl/ – Jeremy31 Feb 03 '15 at 11:13