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Thread: Poor connection with AtherosAR9287 running Ubuntu 12.04

  1. #1
    Join Date
    Oct 2012

    Poor connection with AtherosAR9287 running Ubuntu 12.04

    Hello all,

    My wireless connection in Ubuntu is very slow, while the connection is perfect in Windows 7. It also seems to switch between a good and a poor signal, as my browser sometimes loads sites instantly and sometimes takes ages. Also I'm currently trying to install java via the terminal and it's taking forever, with download speeds varying from 1B/s to 200kb/s. Again: I don't have any of these problems on Windows. I'm new with Ubuntu but I've tried to gather some information for you which might be helpful.

    Here is some info:

    I'm using an Acer Aspire 5552G Laptop.

    $ iwlist scan:

    wlan0     Scan completed :
              Cell 01 - Address: 00:02:6F:C0:96:B4
                        Frequency:2.462 GHz (Channel 11)
                        Quality=70/70  Signal level=-37 dBm  
                        Encryption key:on
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                                  18 Mb/s; 36 Mb/s; 54 Mb/s
                        Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                        Extra: Last beacon: 52176ms ago
    sudo lshw -c network

           description: Wireless interface
           product: AR9287 Wireless Network Adapter (PCI-Express)
           vendor: Atheros Communications Inc.
           physical id: 0
           bus info: pci@0000:08:00.0
           logical name: wlan0
           version: 01
           serial: 20:7c:8f:28:0a:03
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
           configuration: broadcast=yes driver=ath9k driverversion=3.2.0-31-generic firmware=N/A ip= latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
           resources: irq:17 memory:f1000000-f100ffff
    wlan0     IEEE 802.11bgn  ESSID:"EnGeniusC096B4"  
              Mode:Managed  Frequency:2.462 GHz  Access Point: 00:02:6F:C0:96:B4   
              Bit Rate=162 Mb/s   Tx-Power=13 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:off
              Link Quality=70/70  Signal level=-39 dBm  
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:10992  Invalid misc:124   Missed beacon:0

  2. #2
    Join Date
    Oct 2012

    Re: Poor connection with AtherosAR9287 running Ubuntu 12.04

    I'm sure someone can help me.. Would be much appreciated!

  3. #3
    Join Date
    Oct 2012

    Re: Poor connection with AtherosAR9287 running Ubuntu 12.04

    Bump.. Someone please, pretty pretty please, help me!

  4. #4
    Join Date
    Sep 2011
    Pennsylvania, U.S.A.
    Ubuntu Development Release

    Re: Poor connection with AtherosAR9287 running Ubuntu 12.04

    No guarantees but you could try what post #5 in this thread says:


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