[LUGSB] How to fix wireless reliability problems on campus

[Richard Yao]

I don't understand what you are asking. It is set to off by the kernel
and I can set it manually, bu I cannot set it to auto because that is
not supported by the driver.

By the way, wpa_supplicant has room for improvement:

Sep 14 16:42:19 t520 NetworkManager[2982]: <info> (wlan0): supplicant
connection state:  disconnected -> associating
Sep 14 16:42:20 t520 kernel: [  135.035123] wlan0: authenticate with
00:1a:1e:15:97:30 (try 1)
Sep 14 16:42:20 t520 kernel: [  135.234123] wlan0: authenticate with
00:1a:1e:15:97:30 (try 2)
Sep 14 16:42:20 t520 kernel: [  135.433895] wlan0: authenticate with
00:1a:1e:15:97:30 (try 3)
Sep 14 16:42:20 t520 kernel: [  135.633566] wlan0: authentication with
00:1a:1e:15:97:30 timed out
Sep 14 16:42:30 t520 NetworkManager[2982]: <info> (wlan0): supplicant
connection state:  associating -> disconnected
Sep 14 16:42:30 t520 NetworkManager[2982]: <info> (wlan0): supplicant
connection state:  disconnected -> scanning

It actually waits for a timeout after the kernel declared things had
failed to do something. That is wpa_supplicant and not Network
Manager. It becomes more obvious if you turn off wpa_supplicant and
run it yourself. Anyway, the wireless works much better than it did
before, but I still have occasional issues. The windows people also
seem to be having the issues, so I don't think that is a Linux
problem.

Yours truly,
Richard Yao

On Wed, Sep 14, 2011 at 12:18 PM, Ahmed Hassan <ahmed at linuxism.com> wrote:
> Hmm, how it's set by default and you cannot set it manually?
>
> On Sep 14, 2011 12:09 PM, "Richard Yao" <ryao at cs.stonybrook.edu> wrote:
>
> Dear Tony,
>
> They help me. Is wireless working for you with them set to off or are
> they set to auto for you by default?
>
> Would you share the output of the following commands on your system?
>
> iwconfig
>
> cat /etc/lsb-release
> lspci -n
> uname -srvmpio
>
> Yours truly,
> Richard Yao
>
> On Wed, Sep 14, 2011 at 11:29 AM, Tony Biondo <tonyb at tonybox.net> wrote:
>> Every reference to these...
>
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