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[Launchpad Bug Tracker <399983@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/399983

Title:
  Wireless connection drops too often with ath9k driver

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  I'm running ubuntu 9.04 on my Asus K50IN notebook. Wireless connection
  interface didn't run by defult. After a quick search I've found this
  package and installed on my machine.

  apt-get install linux-backports-modules-jaunty

  Then wlan0 inferface became visible and I was able to use wireless
  connection. But my wireless connection is dopping many times and its
  strength looks lower then expected. My Linksys wireless router is
  quite close to my asus notebook and normally connection strength
  should be about %95 but it looks about %65-%70

  
  Here is the kernel version,
  cat /proc/version_signature 
  Ubuntu 2.6.28-13.45-generic

  Wireless network adapter model,
  lspci -k | grep -A3 "Network controller"
  05:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
  Kernel driver in use: ath9k
  Kernel modules: ath9k

  iwconfig
  lo        no wireless extensions.

  eth0      no wireless extensions.

  wmaster0  no wireless extensions.

  wlan0     IEEE 802.11bgn  ESSID:"arda"  
            Mode:Managed  Frequency:2.462 GHz  Access Point: 00:1A:70:95:D0:04   
            Bit Rate=1 Mb/s   Tx-Power=20 dBm   
            Retry min limit:7   RTS thr:off   Fragment thr=2352 B   
            Encryption key:off
            Power Management:off
            Link Quality=57/70  Signal level=-53 dBm  
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:0   Missed beacon:0

  pan0      no wireless extensions.

  
  The bad thing is when the connection drops it is not possible to reconnect to network. It's not possible to connect my notebook remotely in that case. 

  Wireless network connection is very unstable. Please tell me a
  solution, what should I do to make my wireless connection stable.

  
  Arda

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