Re: Network Manager reason codes

[Dan Williams <dcbw redhat com>]

On Mon, 2011-03-07 at 20:53 +0100, Kai Sommer wrote:
> Hi there!
> 
> I'm new to this list because I couldn't find any usefull answer to my
> question(s). But I found this thread and I now will try my luck again. :)
> 
> So, here is my problem:
> I use Ubuntu and connect to an unencrypted/open network (WLAN) at my
> university. After that I have to use the Cisco VPN client (with username
> and password) to establish a functional internet connection *horribleiknow*.
>   -> Since some weeks/months the WLAN connection is very unstable.
> 
> Look at this two short parts of my log files (syslog & loop with
> iwconfig) I recorded to document the phenomena:
> 
> 1. syslog
> --- 8< ---
> Mar  7 15:17:03 axolotl wpa_supplicant[24391]: CTRL-EVENT-DISCONNECTED
> bssid=00:16:9d:44:84:e0 reason=0
> Mar  7 15:17:03 axolotl wpa_supplicant[24391]: CTRL-EVENT-DISCONNECTED
> bssid=00:00:00:00:00:00 reason=0

THis means the driver itself has, for some reason, decided to disconnect
itself from the AP.  You'll have to figure out why the driver
disconnected, given that it looks like your signal strength is OK.

> Mar  7 15:17:03 axolotl NetworkManager[24388]: <info> (wlan0):
> supplicant connection state:  completed -> disconnected

This indicates that NM did not expect the disconnection.  So this
indicates the root cause of the issues are in the kernel driver for your
wifi hardware.  Note that the rt2860sta vendor drivers are not part of
the upstream kernel, and thus their quality cannot really be vouched
for.  They are usually better quality than random drivers you find on
the internet, but they are not of sufficient quality to have been
included in the actual Linux kernel (that's changing though, I think).

Dan

> Mar  7 15:17:03 axolotl NetworkManager[24388]: <info> (wlan0):
> supplicant connection state:  disconnected -> scanning
> Mar  7 15:17:08 axolotl wpa_supplicant[24391]: Trying to associate with
> 00:16:9d:44:84:e0 (SSID='FH-Potsdam' freq=2412 MHz)
> Mar  7 15:17:08 axolotl kernel: [16391.948242] ===>rt_ioctl_giwscan.
> 3(3) BSS returned, data->length = 321
> Mar  7 15:17:08 axolotl kernel: [16391.948849]
> ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=1)
> Mar  7 15:17:08 axolotl NetworkManager[24388]: <info> (wlan0):
> supplicant connection state:  scanning -> associating
> Mar  7 15:17:09 axolotl wpa_supplicant[24391]: Associated with
> 00:16:9d:44:84:e0
> Mar  7 15:17:09 axolotl wpa_supplicant[24391]: CTRL-EVENT-CONNECTED -
> Connection to 00:16:9d:44:84:e0 completed (reauth) [id=0 id_str=]
> Mar  7 15:17:09 axolotl NetworkManager[24388]: <info> (wlan0):
> supplicant connection state:  associating -> associated
> Mar  7 15:17:09 axolotl NetworkManager[24388]: <info> (wlan0):
> supplicant connection state:  associated -> completed
> --- >8 ---
> 
> 2. iwconfig
> --- 8< ---
> Mo 7. Mär 15:17:03 CET 2011
>   Mode:Managed  Frequency=2.412 GHz  Access Point: 00:16:9D:44:84:E0
>   Link Quality=58/100  Signal level:-80 dBm  Noise level:-97 dBm
> Mo 7. Mär 15:17:04 CET 2011
>   Mode:Auto  Frequency=2.412 GHz  Access Point: 00:16:9D:44:84:E0
>   Link Quality=82/100  Signal level:-80 dBm  Noise level:-97 dBm
> Mo 7. Mär 15:17:05 CET 2011
>   Mode:Auto  Frequency=2.412 GHz  Access Point: 00:16:9D:44:84:E0
>   Link Quality=82/100  Signal level:-80 dBm  Noise level:-97 dBm
> Mo 7. Mär 15:17:06 CET 2011
>   Mode:Auto  Frequency=2.412 GHz  Access Point: 00:16:9D:44:84:E0
>   Link Quality=82/100  Signal level:-80 dBm  Noise level:-97 dBm
> Mo 7. Mär 15:17:07 CET 2011
>   Mode:Auto  Frequency=2.412 GHz  Access Point: 00:16:9D:44:84:E0
>   Link Quality=82/100  Signal level:-80 dBm  Noise level:-97 dBm
> Mo 7. Mär 15:17:08 CET 2011
>   Mode:Auto  Frequency=2.412 GHz  Access Point: 00:16:9D:44:84:E0
>   Link Quality=82/100  Signal level:-80 dBm  Noise level:-97 dBm
> Mo 7. Mär 15:17:09 CET 2011
>   Mode:Auto  Frequency=2.412 GHz  Access Point: 00:16:9D:44:84:E0
>   Link Quality=82/100  Signal level:-80 dBm  Noise level:-97 dBm
> Mo 7. Mär 15:17:10 CET 2011
>   Mode:Managed  Frequency=2.412 GHz  Access Point: 00:16:9D:44:84:E0
>   Link Quality=70/100  Signal level:-82 dBm  Noise level:-97 dBm
> --- >8 ---
> 
> I'm using an ASUS eeePC 1000 with
> * Ubuntu 10.10
> * wpa_supplicant v0.7.3
> * nm-applet v0.8.1.998
> * WLAN chip RaLink RT2860 (module rt2860sta)
> 
> I hope someone can help me because using the internet at my univerity at
> the moment is not realy possible. - By disconnecting a mean of every 3-5
> minutes and the problem that my VPN account is disabled for 20 minutes
> after 3 (within a short timeframe) logins, I can't work and I'm realy
> frustrated...
> Please ask me questions if you have some - I'll try to answer!
> 
> Thanks and best regards,
> Kai
> 
> PS:
> I hope it's O.K. that I 'hijacked' this thread!
> 
> _______________________________________________
> networkmanager-list mailing list
> networkmanager-list gnome org
> http://mail.gnome.org/mailman/listinfo/networkmanager-list