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Thread: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

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  1. #1
    Join Date
    Apr 2012
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    17

    Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    Hi,

    I just upgraded from 10.04 LTS to 12.04 Beta 2.
    The wireless card I have in my PC is Ralink RT2800 802.11n PCI. This card functioned fine back in 10.04 as it rarely dropped connection and had a very fast and stable transfer speed.

    Once I've moved to 12.04 Beta 2 (kernel 3.2.0-23 so far), the wireless card works but every now and then would start dropping all the packets. The connection status is still connected to my AP, but I can't ping... I can't look up DNS, etc.

    It still shows the list of AP's around, so I wonder if the scan is working fine, or maybe it could have been the cached list from when the wireless was working...

    The easy way to fix it is to click on network-manager and disconnect from the AP, and reconnect to the AP. Once it reconnects, things will be working again.

    It's pretty annoying.

    I'm not sure what diff it will make between b2 and the actual 12.04 release, but since this is specific to the driver, I have a feeling the only way for me to get back the driver that was in 10.04.

    Questions:

    1. The driver objects are here:
    Code:
    neilhuang@neilhuang-desktop:~$ modprobe -l | grep rt2800
    kernel/drivers/net/wireless/rt2x00/rt2800lib.ko
    kernel/drivers/net/wireless/rt2x00/rt2800pci.ko
    kernel/drivers/net/wireless/rt2x00/rt2800usb.ko
    Does that mean the drivers are compiled and installed with the kernel?
    I know I can do modprobe -r [driver], which means the drivers are pluggable modules. But do the modules exist within the same kernel (3.2.0-xx vs 2.6.32-yy) source?

    2. If the above question is true, is there anyway for me to find the original rt2x00 drivers that came with the 2.6.32 kernel (aka ubuntu 10.04) and somehow modprobe it back to the current kernel? (because the ubuntu 10.04 drivers were stable for me)

    3. Where can I find logs for the wireless drivers' so I can hopefully see what's happening when packets start to drop?

    Thanks and I hope the above questions make sense. I'm not much of a kernel/driver level guy, heh. Mostly just application level dev for me as my day job.

  2. #2
    Join Date
    Jan 2010
    Location
    Southaven, MS
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    187
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    Try turning off power management:

    Code:
    sudo iwconfig wlan0 power off
    Jerry

  3. #3
    Join Date
    Apr 2012
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    17

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    Thanks. Will give it a try.

  4. #4
    Join Date
    Apr 2012
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    17

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    Quote Originally Posted by jawilljr View Post
    Try turning off power management:

    Code:
    sudo iwconfig wlan0 power off
    Jerry
    Sorry, this doesn't seem to help. Thanks anyway.
    Any other ideas?

  5. #5
    Join Date
    Apr 2012
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    1

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    @neilhuang I have a same problem with Ralink RT2800. Did you found any solution?

  6. #6
    Join Date
    Apr 2012
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    17

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    Not yet I'm constantly hitting it, especially during heavy data tx/rx...

    Does anyone have experience with driver modules?

  7. #7
    Join Date
    Apr 2012
    Beans
    17

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    I found out that "Modules from one kernel can't be loaded into another kernel" so that throws my idea out the window...

    I'm kind of lost as to how to debug and contact the right resources to help fix this bug...

  8. #8
    Join Date
    Jan 2012
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    45

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    Quote Originally Posted by neilhuang View Post
    Not yet I'm constantly hitting it, especially during heavy data tx/rx...

    Does anyone have experience with driver modules?

    I think this is my experience as well. It goes fast, than stops. Using RT2800. I don't know how to install anything new and nothing else is in the U.S.C.
    Attached Images Attached Images

  9. #9
    Join Date
    Jun 2013
    Beans
    2

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    Hi, I'm a new member (from Italy, so please forgive my language errors), using Ubuntu from 2 years, but i'm a newbie with problem of network (and with many other things).
    My release is Rarin Ringtail, and I've got the problem of ralink2800.
    I'm trying to follow the guide at the first page of this thread (http://ubuntuforums.org/showthread.p...9#post11858549).
    I can follow the guide up to point 5, but I don't understand when the guide says: "run make from the prompt".
    Which command should I write on terminal?
    According to "man make" I tried to run "make" in the folder Download/2010_07_16_RT2860_Linux_STA_v2.4.0.0/os/linux, but the output is:

    "make: *** Nessun obiettivo specificato e nessun makefile trovato. Arresto."
    Translated: "No target specified and no makefile found. Arrest.".

    It's strange, because there are two makefile in that folder: "Makefile4" and "Makefile6".
    Can you help me to understand?


    PS: I extracted the archive in "Download" folder.
    Last edited by adri76; June 10th, 2013 at 12:44 PM.

  10. #10
    Join Date
    Apr 2012
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    17

    Re: Ubuntu 12.04 beta2 issues with Ralink RT2800 PCI loses connection

    Please make sure that you've downloaded the correct Linux Drivers, not Windows.
    Once you've extracted the contents, you should see a file called "Makefile" inside of that directory. If you don't, you may have downloaded the wrong package.

    I just checked the website again. It seems that they've made things a little more confusing, but should still be there. The driver is under GNU so I've posted it here.
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