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[Bug 1231925] Re: wlan interface number is changes upon abnormal shutdown in ubuntu arm

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>
Date: Tue, 18 Mar 2014 16:00:33 -0000
Reply-to: Bug 1231925 <1231925@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1231925

Title:
  wlan interface number is changes upon abnormal shutdown in ubuntu arm

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  wifi card with beaglebone black on ubuntu is working good. But on next
  boot after an abnormal shutdown I can not connect to wifi. I have to
  run iwconfig and find out wlan interface and update the
  /etc/network/interfaces with appropriate wlan interface - mostly wlan0
  becomes wlan1 becomes wlan2 .... -. Here is my iwconfig

  $ iwconfig
  wlan3     IEEE 802.11bg  ESSID:off/any  
            Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
            Retry  long limit:7   RTS thr:off   Fragment thr:off
            Power Management:on
            
  ppp0      no wireless extensions.

  lo        no wireless extensions.

  eth0      no wireless extensions.

  usb0      no wireless extensions.

  In the above on next abnormal shutdown wlan3 becomes wlan4.

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