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Thread: Artheros AR928X unstable connection and connection drop

  1. #1
    Join Date
    Dec 2008
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    Ubuntu Development Release

    Artheros AR928X unstable connection and connection drop

    First of all, I'm running Ubuntu 9.04 Jaunty with kernel: 2.6.28-13-generic. I have an Artheros AR928X wireless card on a HP G60-247CL laptop. It frequently drops the connection no matter what access point I'm connected to (TP-Link Wireless N router, Netgear Wireless G router, and Linksys Wireless G router). I'm using Wicd right now because with Network-Manager, it always came up password dialog even if its right (with WPA and WPA2). After about 10 tries with NM, it would connect. Wicd connects on the first try. Both lose the connection and reconnect frequently.

    I'm not using a custom kernel; I'm just using the default kernel or updated one installed from updates. I'm still very new to linux, so if there are any commands I need to run in the terminal, it would be nice if you explained the commands, or typed the exact package name (like linux-backport-modules-jaunty rather than kernel backports). If there are any log files, config files, etc. that you need me to post, I would be happy to do so. I'll compile packages/kernel from source if I need to.

    BTW1, I'm using the default ATH9X driver. If I need to use ndiswrapper or some other driver, could you provide clear instructions.

    BTW2, Please don't post any comments telling me to look in the forum. I spent a lot of time looking through all the threads and posts on the driver and wireless card and even the Launchpad Bugzilla. Most of the things didn't work or I didn't understand them.

    P.S. Sorry about my English and the long post.

  2. #2
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    Re: Artheros AR928X unstable connection and connection drop

    Hey there my friend! Your English is just fine. First I want to see some logs. So go into a Terminal and type the following:
    Code:
    tail -f /var/log/syslog
    Post the results here on the forums. Now you mentioned you're using the default Atheros drivers, well that's fine for now but I want you to try a couple of different things before I hunt down a driver for you, and if it comes to that, don't worry I'll walk you through it step by step. So anyway, try connecting through the Terminal and see if you get any different results:
    Code:
    iwconfig wlan0 essid *youressid*
    Now obviously where *youressid* is you would put your ESSID. I'd also like to see your routing table, you can view that by running the following:
    Code:
    route
    Once I've seen those logs, I can help you further.
    Google Ventures / Prowl

  3. #3
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    Re: Artheros AR928X unstable connection and connection drop

    Thanks!!!

    Here are the results of tail -f /var/log/syslog :

    Code:
    chenxiaolong@CXL-2CE90587MV:~$ tail -f /var/log/syslog
    Jul  6 11:29:26 CXL-2CE90587MV ntfs-3g[11496]: Cmdline options: rw,nosuid,nodev,uhelper=hal,locale=en_US.UTF-8 
    Jul  6 11:29:26 CXL-2CE90587MV ntfs-3g[11496]: Mount options: rw,nosuid,nodev,uhelper=hal,silent,allow_other,nonempty,relatime,fsname=/dev/sda2,blkdev,blksize=4096 
    Jul  6 11:29:26 CXL-2CE90587MV hald: mounted /dev/sda2 on behalf of uid 1000
    Jul  6 11:30:02 CXL-2CE90587MV /USR/SBIN/CRON[11547]: (root) CMD ([ -x /usr/sbin/update-motd ] && /usr/sbin/update-motd 2>/dev/null)
    Jul  6 11:38:04 CXL-2CE90587MV kernel: [ 7501.928200] wlan0: beacon loss from AP f679c6b8 - sending probe request
    Jul  6 11:40:01 CXL-2CE90587MV /USR/SBIN/CRON[12254]: (root) CMD ([ -x /usr/sbin/update-motd ] && /usr/sbin/update-motd 2>/dev/null)
    Jul  6 11:42:44 CXL-2CE90587MV anacron[12596]: Anacron 2.3 started on 2009-07-06
    Jul  6 11:42:44 CXL-2CE90587MV anacron[12596]: Normal exit (0 jobs run)
    Jul  6 11:42:44 CXL-2CE90587MV anacron[12604]: Anacron 2.3 started on 2009-07-06
    Jul  6 11:42:44 CXL-2CE90587MV anacron[12604]: Normal exit (0 jobs run)
    Jul  6 11:44:11 CXL-2CE90587MV kernel: [ 7868.968329] wlan0: beacon loss from AP f679c6b8 - sending probe request
    Jul  6 11:44:15 CXL-2CE90587MV kernel: [ 7872.972397] wlan0: beacon loss from AP f679c6b8 - sending probe request
    Jul  6 11:44:38 CXL-2CE90587MV kernel: [ 7895.713753] wlan0: beacon loss from AP f679c6b8 - sending probe request
    Jul  6 11:45:34 CXL-2CE90587MV kernel: [ 7951.240212] wlan0: authenticate with AP f679c6b8
    Jul  6 11:45:34 CXL-2CE90587MV kernel: [ 7951.242905] wlan0: authenticated
    Jul  6 11:45:34 CXL-2CE90587MV kernel: [ 7951.242918] wlan0: associate with AP f679c6b8
    Jul  6 11:45:34 CXL-2CE90587MV kernel: [ 7951.247302] wlan0: RX ReassocResp from efad608a (capab=0x431 status=0 aid=1)
    Jul  6 11:45:34 CXL-2CE90587MV kernel: [ 7951.247314] wlan0: associated
    Jul  6 11:46:04 CXL-2CE90587MV kernel: [ 7981.661197] wlan0: beacon loss from AP f679c6b8 - sending probe request
    Jul  6 11:46:12 CXL-2CE90587MV kernel: [ 7989.442970] wlan0: beacon loss from AP f679c6b8 - sending probe request
    Here are the results of iwconfig wlan0 essid "LL-Wireless N" (My N router)

    Code:
    chenxiaolong@CXL-2CE90587MV:~$ iwconfig wlan0 essid "LL-Wireless N"
    Error for wireless request "Set ESSID" (8B1A) :
        SET failed on device wlan0 ; Operation not permitted.
    chenxiaolong@CXL-2CE90587MV:~$ sudo iwconfig wlan0 essid "LL-Wireless N"
    [sudo] password for chenxiaolong: 
    chenxiaolong@CXL-2CE90587MV:~$
    Here are the results of iwconfig wlan0 essid "LL-Wireless G" (My G router) after rebooting

    Code:
    chenxiaolong@CXL-2CE90587MV:~$ sudo iwconfig wlan0 essid "LL-Wireless G"
    [sudo] password for chenxiaolong: 
    chenxiaolong@CXL-2CE90587MV:~$
    Here are the results of iwconfig wlan0 essid "linksys" (My other G router) after rebooting again

    Code:
    chenxiaolong@CXL-2CE90587MV:~$ sudo iwconfig wlan0 essid "linksys"
    [sudo] password for chenxiaolong: 
    chenxiaolong@CXL-2CE90587MV:~$
    And here's my routing table :

    Code:
    chenxiaolong@CXL-2CE90587MV:~$ route
    Kernel IP routing table
    Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
    192.168.1.0     *               255.255.255.0   U     0      0        0 wlan0
    default         192.168.1.2     0.0.0.0         UG    0      0        0 wlan0
    chenxiaolong@CXL-2CE90587MV:~$
    After the commands, I couldn't connect any wireless network any more. I tried rebooting, but Wicd says it can't find any wireless networks.
    Laptop broke ...

  4. #4
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    Re: Artheros AR928X unstable connection and connection drop

    Once you have attempted to connect to your wireless network by running:
    Code:
    sudo iwconfig wlan0 essid "linksys"
    Try to ping Google and see if you get a response. You can ping Google by running:
    Code:
    ping google.com
    Google Ventures / Prowl

  5. #5
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    Re: Artheros AR928X unstable connection and connection drop

    After running those commands, this is what I get:

    Code:
    chenxiaolong@CXL-2CE90587MV:~$ sudo iwconfig wlan0 essid "linksys"
    [sudo] password for chenxiaolong: 
    chenxiaolong@CXL-2CE90587MV:~$ ping google.com
    ping: unknown host google.com
    chenxiaolong@CXL-2CE90587MV:~$
    Laptop broke ...

  6. #6
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    Ubuntu 10.04 Lucid Lynx

    Question Re: Artheros AR928X unstable connection and connection drop

    Hi there,

    My laptop, Dell Inspiron 1545 using same version, kernel as mentioned (chenxiaolong) and worse scenario that I'm having after I upgraded from previous kernel is, I'm unable to connect to my own wifi router except others.

    It also able to connect to anything other than the one at home. Having exact symptons as mentioned by chenxiaolong.

    FYI, I'm plugging an Aztech USB Wifi and everything seems to be work.

    Could this be the kernel upgrade that caused incompatibility between Atheros 928X and my Linksys WRT310N? Just my two cents.

    Regards,

    Terence Loo

  7. #7
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    Re: Artheros AR928X unstable connection and connection drop

    I just tested the Sabayon 4.2 Gnome live cd today and the wireless card worked fine. I don't know if this is a kernel problem or an Ubuntu-specific problem.
    Laptop broke ...

  8. #8
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    Re: Artheros AR928X unstable connection and connection drop

    I starting to think that the problem is a kernel problem. The wireless card connects to all three of my networks in Fedora 11 and Foresight 2.1.1. I get a 100% signal within ten feet from my house, about 55% signal in the basement, and 30% signal outside the house (Wireless N).
    Laptop broke ...

  9. #9
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    Re: Artheros AR928X unstable connection and connection drop

    I'm having the same issues with it being unstable, but this is on an ASUS laptop.

  10. #10
    Join Date
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    Hattiesburg, MS, USA
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    Ubuntu 9.04 Jaunty Jackalope

    Re: Artheros AR928X unstable connection and connection drop

    I found a fix for my HP G60-247CL that has the same AR928X card. I'm running 64-bit, but I assume it works on 32-bit as well. Now my laptop connects in less than 10 seconds to WPA or no security, and it doesn't drop the connection anymore.

    For Jaunty:
    Code:
    sudo aptitude install linux-backports-modules-jaunty-generic
    For Intrepid:
    Code:
    sudo aptitude install linux-backports-modules-intrepid-generic
    Taken from http://ubuntuforums.org/showthread.php?t=1030629 post #10. I only modified HuaiDan's code for it to work with jaunty.
    Last edited by networkproblems; August 4th, 2009 at 12:30 AM.

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