[SOLVED]Wireless connection becomes deactivated 3 seconds

Question

Good day,
I am new to Arch. I installed Arch successfully and have everything working except the wifi.
My WLAN device is Broadcom's BCM4312 and I have installed b43 driver from AUR.  Wired eth0 connection works fine but when I connect using wireless, the connection lasts about  3 seconds(enough time to open 1 or 2 pages). As the sites open during this time, I think my device gets detected properly but somehow fails to keep the connection longer.
Below is the output from dmesg
[ 1747.197981] wlan0: authenticate with f8:d1:11:81:d1:7d
[ 1747.210626] wlan0: send auth to f8:d1:11:81:d1:7d (try 1/3)
[ 1747.212947] wlan0: authenticated
[ 1747.216732] wlan0: associate with f8:d1:11:81:d1:7d (try 1/3)
[ 1747.219879] wlan0: RX AssocResp from f8:d1:11:81:d1:7d (capab=0x411 status=0 aid=2)
[ 1747.220831] wlan0: associated
[ 1747.220867] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 1768.003811] wlan0: deauthenticating from f8:d1:11:81:d1:7d by local choice (reason=3)
[ 1768.243633] b43-phy0: Loading firmware version 666.2 (2011-02-23 01:15:07)
I tried NetworkManager(with KDE GUI front-end) at first. As I got the same error, I tried wicd(with KDE GUI front-end) and I am still getting the same error. Can somebody help me with this?. Please let me  know if you need any information. Thanks in advance
Last edited by anotherarchguy (2013-11-16 18:28:36)

Answer 1

Sorry guys that I did not clearly document the steps clearly in my desperation to get the WiFi working.
I'll try recalling and list here what I did. All steps below are based on what I found on the web, googling the problem plus cfr's suggestion.
1) Spotted this problem first, when I tried connecting using Network Manager(KDE front-end). Thought wicd might solve the problem and installed it, but didn't work.
2) Googled, some had suggested that this problem was related to IPv6. Disabled it, still didn't work. [I just changed the config file with ipv6_disabled=1, didn't touch/restart any services at this step]
3) Googled some more, some suggested that this problem was related to power save mode of the wirless interface. Switched it off, didn't work [I think my hardware doesn't support this mode anyways as I get an "Operation not permitted" when I try to turn it on, but not off ]
4) Some had suggested to kill wpa_supplicant. But this didn't work either as it got spawned automatically every time I killed it with kill -9[Might have been due to NetworkManager]
5) Asked this forum, uninstalled NetworkManager & wicd, disabled netctl & dhcpd, tried the manual method to connect WiFi. This time, it worked.
@doak:
I did not change the config for wpa_supplicant and I don't think I ever saw two wpa_supplicant instances running. So this might have been a different problem for you, I think.
Please let me know if you have any questions.