[Bug 228110] Re: [Hardy] Link Quality over 100% in iwconfig

[Thomas Hotz]

** Changed in: wireless-tools (Ubuntu)
       Status: Incomplete => Fix Released

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Title:
  [Hardy] Link Quality over 100% in iwconfig

Status in “wireless-tools” package in Ubuntu:
  Fix Released

Bug description:
  I use a bcm4318 card with firmware provided by Ubuntu Hardy, on an
  Asus A6R laptop.

  (02:03.0 Network controller: Broadcom Corporation BCM4318 [AirForce
  One 54g] 802.11g Wireless LAN Controller (rev 02))

  Wifi works well, there are just little bugs.

  -> this one : https://bugs.launchpad.net/ubuntu/+source/network-
  manager-applet/+bug/224860

  -> and this one. Here are several iwconfig outputs :

  /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  iwconfigfamille at famille-laptop:~$ iwconfig
  lo        no wireless extensions.

  eth0      no wireless extensions.

  wmaster0  no wireless extensions.

  wlan0     IEEE 802.11g  ESSID:"ordi"  
            Mode:Managed  Frequency:2.462 GHz  Access Point: 00:07:CB:55:98:E8   
            Bit Rate=24 Mb/s   Tx-Power=27 dBm   
            Retry min limit:7   RTS thr:off   Fragment thr=2346 B   
            Link Quality=71/100  Signal level=-46 dBm  Noise level=-73 dBm
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:0   Missed beacon:0

  famille at famille-laptop:~$ iwconfig
  lo        no wireless extensions.

  eth0      no wireless extensions.

  wmaster0  no wireless extensions.

  wlan0     IEEE 802.11g  ESSID:"ordi"  
            Mode:Managed  Frequency:2.462 GHz  Access Point: 00:07:CB:55:98:E8   
            Bit Rate=36 Mb/s   Tx-Power=27 dBm   
            Retry min limit:7   RTS thr:off   Fragment thr=2346 B   
            Link Quality=134/100  Signal level=-28 dBm  Noise level=-73 dBm
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:0   Missed beacon:0

  famille at famille-laptop:~$ iwconfig
  lo        no wireless extensions.

  eth0      no wireless extensions.

  wmaster0  no wireless extensions.

  wlan0     IEEE 802.11g  ESSID:"ordi"  
            Mode:Managed  Frequency:2.462 GHz  Access Point: 00:07:CB:55:98:E8   
            Bit Rate=36 Mb/s   Tx-Power=27 dBm   
            Retry min limit:7   RTS thr:off   Fragment thr=2346 B   
            Link Quality=134/100  Signal level=-28 dBm  Noise level=-73 dBm
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:0   Missed beacon:0

  famille at famille-laptop:~$ iwconfig
  lo        no wireless extensions.

  eth0      no wireless extensions.

  wmaster0  no wireless extensions.

  wlan0     IEEE 802.11g  ESSID:"ordi"  
            Mode:Managed  Frequency:2.462 GHz  Access Point: 00:07:CB:55:98:E8   
            Bit Rate=36 Mb/s   Tx-Power=27 dBm   
            Retry min limit:7   RTS thr:off   Fragment thr=2346 B   
            Link Quality=71/100  Signal level=-21 dBm  Noise level=-73 dBm
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:0   Missed beacon:0

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  As you can see Bit Rate changes (24 Mb/s, 36 Mb/s) and iwconfig
  returns strange values for Link Quality (134/100, which means 134%).

  Sylvain

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