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Thread: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrapper

  1. #11
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    Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    I suggest you email the developer; his name and email address is probably in the README. Be sure to tell him your kernel version:
    Code:
    uname -a
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  2. #12
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    Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    Ok thanks for your help. I installed the 32 bit version of ubuntu 11.04 to try that and it still gives me the same error. I shall look for contact details now. for any one else interested here's results for uname -a
    Linux michael 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 athlon i386 GNU/Linux

  3. #13
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    Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    Quote Originally Posted by pooper View Post
    Ok thanks for your help. I installed the 32 bit version of ubuntu 11.04 to try that and it still gives me the same error. I shall look for contact details now. for any one else interested here's results for uname -a
    I think it's the developer that will need to know what kernel version you're running.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  4. #14
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    Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    Just tried also on a 32bit natty install with no luck. Same error as pooper. The 8192cu.ko module will not install and 8192cu module mia. Natty is leaving me shaking my head and wondering wondering........
    It's okay, I'm a limo driver

  5. #15
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    Cool Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    I've contacted realtek as I couldnt find any developer contact details in readme. I actually got the device working last night using 11.04 32bit and ndiswrapper.. I've tried today to get it working with ndiswrapper and 64 bit, but nothing's working.

  6. #16
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    Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    ok, so I got this working on ubuntu 11.04 32 bit using ndiswrapper and the driver for xp 32 bit from edimax website. Now I have a new problem. When I turn on the computer the device lights up as it should flashing blue (which it didn't before installation) but I get no display... something else isn't loading. On my LG TV I get message (from TV not computer) "Invalid Input"


    Any Ideas on this one?

    I see a lot of problems on this wireless issue I think I'm going to return the product and try another, quite possibly a pci.

  7. #17
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    Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    Hi,
    I had the same compilation problem with the linux drivers(32 bit) and 11.04 and fixed it with the following patches.

    diff -r e33a0d4b1d47 rtl8192CU_linux_v2.0.1324.20110126/os_dep/osdep_service.c
    --- a/rtl8192CU_linux_v2.0.1324.20110126/os_dep/osdep_service.c Sun May 01 16:04:55 2011 -0400
    +++ b/rtl8192CU_linux_v2.0.1324.20110126/os_dep/osdep_service.c Sun May 01 16:11:25 2011 -0400
    @@ -302,7 +302,7 @@
    {
    #ifdef PLATFORM_LINUX

    - init_MUTEX(pmutex);
    + sema_init(pmutex, 1);

    #endif
    #ifdef PLATFORM_OS_XP


    After that file compiled, there was an error in usb_intf.c, i commented out the autosuspend_delay variable which is no longer in that structure. I haven't had time to research if there is a better fix for the usb file, but my wifi is working

    diff -r e33a0d4b1d47 rtl8192CU_linux_v2.0.1324.20110126/os_dep/linux/usb_intf.c
    --- a/rtl8192CU_linux_v2.0.1324.20110126/os_dep/linux/usb_intf.c Sun May 01 16:04:55 2011 -0400
    +++ b/rtl8192CU_linux_v2.0.1324.20110126/os_dep/linux/usb_intf.c Sun May 01 16:11:25 2011 -0400
    @@ -914,7 +914,7 @@
    if( padapter->registrypriv.power_mgnt != PS_MODE_ACTIVE )
    {
    if(padapter->registrypriv.usbss_enable ){ /* autosuspend (2s delay) */
    - pdvobjpriv->pusbdev->autosuspend_delay = 0 * HZ;//15 * HZ; idle-delay time
    + // pdvobjpriv->pusbdev->autosuspend_delay = 0 * HZ;//15 * HZ; idle-delay time

    #if (LINUX_VERSION_CODE>=KERNEL_VERSION(2,6,35))
    usb_enable_autosuspend(padapter->dvobjpriv.pusbdev);


    Cheers.

  8. #18
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    Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    Quote Originally Posted by pooper View Post
    ok, so I got this working on ubuntu 11.04 32 bit using ndiswrapper and the driver for xp 32 bit from edimax website. Now I have a new problem. When I turn on the computer the device lights up as it should flashing blue (which it didn't before installation) but I get no display... something else isn't loading. On my LG TV I get message (from TV not computer) "Invalid Input"


    Any Ideas on this one?

    I see a lot of problems on this wireless issue I think I'm going to return the product and try another, quite possibly a pci.
    I think it would probably be a better idea just to roll back to 10.10 as this device is stable and rock solid with 10.10.
    It's okay, I'm a limo driver

  9. #19
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    Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    ok Moopi I'll try that. I did originally have 10.10 but at the time when trying to install the usb adapter I didn't have a wired connection so no internet connection and nothing would work as I couldn't download additional bits. So got it wired up and saw 11.04 and went with that.
    Can you confirm the Edimax I have works with the 64bit version of 10.10 ? if not I'll download the 32bit.

    cheers

  10. #20
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    Lightbulb Re: edimax ew-7811Un wireless usb adapter, problems with linux drivers and ndiswrappe

    hey Moopi

    I've installed 10.4 l.t.s version and the thing installed fine!! (needs an ethernet connection though for internet connection to download the other bits) got the driver from edimax website rather than the one supplied on provided cd.

    One more question though.. A load of automatic updates have appeared for this 10.4, are there any I shouldn't update?

    Thanks a lot to everyone who contributed not only have I finally got it to work (with out resorting to windows), but I've also learned a bit too.

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