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I'm running 11.10 with BCM4312 wireless. I can connect to a network just fine, and I can have an internet connection for a while...but then it drops, but it still says that it is connected on the icon. I can't access any pages.

Any ideas? I'm at my university and I can't mess with the router...this is a big problem for me, since I have to listen to a lot of streaming music for my major. Help!!!!!


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up vote 1 down vote accepted

You could try a different driver. To figure out which one is currently in use, run the
lspci -nnk | grep -iA2 net command. For example, if the output shows that wl module is loaded, try removing bcmwl-kernel-source and installing b43. B43 is just another driver for broadcom cards.


Open the Software Center, search for bcmwl-kernel-source and remove it, then search for firmware-b43-lpphy-installer and install it. Reboot when done.

You may need to load the b43 module manually if there no wireless after that.

sudo modprobe b43

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Here is my output: 09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02) Subsystem: Dell Device [1028:02cf] Kernel driver in use: r8169 -- 0c:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01) Subsystem: Dell Wireless 1397 WLAN Mini-Card [1028:000c] Kernel driver in use: wl i'm still a little noobish to linux....what exactly do I do from here? – Ryan McClure Feb 17 '12 at 7:45
See the edit above. – mikewhatever Feb 17 '12 at 8:42
This works so far perfectly! :) Thank you!!!! If anything comes up, I'll come back and post so others can know. – Ryan McClure Feb 21 '12 at 7:34
You are welcome, might as well accept the answer. :~) – mikewhatever Feb 22 '12 at 3:29
It....has stopped working. :( It does just the same thing. Sooooo.. I'm going to ask the tech support here at my school if I have the correct credentials entered. Which I probably don't. I do appreciate your help Mike :) unfortunately, my laptop just doesn't want to work now :( – Ryan McClure Feb 23 '12 at 4:55

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