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I just upgraded to 11.10 and extremely frustratingly cannot keep a stable connection to ANY WLAN.

It will connect, then disconnect, then connect, making anything that requires the internet impossible.

I have run "rfkill list" with this output:

0: acer-wireless: Wireless Lan
Soft-blocked: no
Hard-blocked: no
1: phy0:  Wireless LAn
Soft-blocked: no
Hard-blocked: no

I have installed b43 firmware but that doesn't work. Will try the BCMWL-kernel-source and see what happens. Just tried that and didn't work.

Meanwhile, anyone have any good ideas?

Will there be a patch to fix this?

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What is the output from: sudo lshw -C network and iwconfig? This may be resolved by blacklisting, but need more details. – david6 Dec 2 '11 at 21:20

Here's how to fix this if your hardware is bcm4312 you just need the correct firmware

open terminal and type:

sudo su -

apt-get install firmware-b43-lpphy-installer

apt-get remove --purge bcmwl-kernel-source

apt-get autoremove --purge

the last one will clean dependency created by bcmwl << which is the STA driver.

reboot - and you-re done.

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