WiFi Woes with Broadcom 4313

I am trying to get my wifi working on the network at my school, and it refuses to do so. I use wicd to connect, but it has trouble obtaining the IP address. I ran dhcpcd and dhclient manually after configuring, and it returns with
No DHCPOFFERS received.
The wifi works on my home network with WPA-PSK encryption, but not here with no encryption. I know that almost all ports are blocked on the network, so I tried broadcasting on a different port to no avail. This network still works on this laptop under Windows 7, so I am unsure of what to do. I tried getting the automatically discovered settings from Windows, and assigning them statically to the interface, but that doesn't work either.
I am using the broadcom-wl driver, as the brcmsmac one had a bad signal. I have another wifi module at home, but I really don't want to open up the laptop as it is under warranty.
Thanks,
Jacob

I managed to fix it by.....well, I'm not really sure. I just rebooted some more, and it seemed to fix itself. I would provide more info if I could, but I find it aggravating that I worked on it for three hours before it just fixed itself.

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Issues with broadcom 4313 wifi card on a samsung NP305

Hi
I'm currently having issues with getting the wifi to work on my broadcom 4313 wifi card on a Samsung NP305U1A. The command
lspci -vnn | grep 14e4
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Thank you very much,
Tuxer
Last edited by Tuxer (2012-01-13 14:31:36)

Hi everybody!
I've found a solution for this problem (at LinLap, see pierre comment on Feb-24-2012) and it worked for my Linux Mint installation. On " /etc/modprobe.d/blacklist.conf" I didn't have the "blacklist b43" line, it was only on a previous comment line, but I commented the next line (it was similar) and added the same blacklist at end of file.
Uninstall the 'Broadcom Sta' driver
Open the file /etc/modprobe.d/blacklist.conf
Delete the line:
blacklist b43
Add these two lines at the end of the file:
blacklist bcma
blacklist brcmsmac
Save and exit
Type:
sudo apt-get remove –purge bcmwl-kernel-source
Reboot
Type:
sudo apt-get update
sudo apt-get install bcmwl-kernel-source
Reboot
Select the 'Broadcom Sta' driver
Best regards and I hope this works for you too

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wolfo9999 wrote:but I know that the os detects it because it shows up in lsusb
That doesn't say anything except that the device is powered on. It does not say anything about the OS. The OS should know something, the docs claim that the brcmfmac driver supports it, but you haven't provided any info for us to know what's going on. ewaller gave you the hint: dmesg. Also exact lsusb output would be nice, so we'll know the usb-id of the device.
Last edited by Gusar (2013-01-20 15:24:19)

[SOLVED]WiFi problem (broadcom 4313)

Aloha,
I have a problem with broadcom 4313 wireless chipset. After clean installation of the system ip link set wlp1s0 up returned rf-kill error. It was a hsrdware block. I downloaded broadcom-wl driver from AUR, makepkg it and pacman -U it. Then rmmod ssb; rmmod bcma; modprobe wl. After that I was able to ip link set wlp1s0 up. The interface is UP! But in NetwarkManager (gnome applet) or in wicd I can't connect any network (the list of available networks is empty) while I am able to estabilish wired (ethernet) connection.
Thank's for the future answers!
Last edited by tegoo (2013-04-30 12:44:13)

lspci -vnn | grep -i net
01:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
02:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8152 v2.0 Fast Ethernet [1969:2062] (rev c1)
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It has on special button and fn-f2 for switching wifi. I have checked all af them. They switch software block in rf-kill.

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Microsoft Support Forum
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No problem! Have a read at this most interesting article which has special significance as regards your models!
http://edition.cnn.com/2012/04/05/tech/gaming-gadgets/ipad-wi-fi-issues/index.ht ml
However, I attach an extract from another thread for your perusal. You can disregard any suggestions/links you have already explored -
created by Texas Mac Man in Using iPad - View the full discussion
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Change the channel on your wireless router. Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
 Cheers, Tom ;)

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Sitting directly under the WIFI router. (It's not a signal strength issue.)
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Checked the PHY Mode. Supported are 802.11 a/b/g/n. The hotel router uses 802.11n.
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Tried deleting all Network-related preference files.
Tried removing all LaunchDaemons and LaunchAgents.
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I've run out of options, other than just sucking it up and getting a big 3G data allowance since I'm here for a month.
If there is anything else I can try - perhaps working out how to set up my Network manually properly, please help me out. Here is everything in System Information that might help. I'll happily provide any other info.
Software Versions:
CoreWLAN:

Sorry. The topic title got mucked up when I tried to paste in my System Information. And I can't paste it in using my iPhone without it going haywire. I can provide any details you need.

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WiFi Woes with Broadcom 4313

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