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Raspberry Pi Forum Wireless network conectivity
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  • raspberry
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Related

Wireless network conectivity

wallarug
wallarug over 14 years ago

I bought one of these about 12 mths ago: http://www.jaycar.com.au/productView.asp?ID=YN8306&keywords=high+power+wireless+n&form=KEYWORD

I downloaded the drivers from the link above then installed them on a windows computer.  How do I use these linux drivers/installers on the raspberry pi to get the wireless adaptor to work?

 

Will this work with the Raspberry Pi?

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  • e14 Contributor
    e14 Contributor over 14 years ago

    If your adaptor uses Broadcom chipset you may need to install a piece of firmware to make it work. I had a similar problem with my Linux netbook that had Ralink wifi. It booted up but said that there was no WiFi as no firmware was loaded! After much searching the solution is at http://linuxwireless.org/en/users/Drivers/b43.

     

    The B43 package installs the firmware needed to run the Broadcom chipset. As its not GPL it can't be released with any Linux package, but is able to be extracted from the Windows driver. This package is already to go, just install!

     

    I required the firmware-b43-installer package. Not sure if it's in the RasPi repositories as I haven't got mine to play with yet... :-( But the above site it fairly comprehensive!

     

    Hope it works.

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  • e14 Contributor
    e14 Contributor over 14 years ago in reply to e14 Contributor

    i have had issues with broadcom on various laptops using different distro's of linux, this is the best solution i have found so far. i also cant confirm at the moment if the b43 firmware is in the repositories. i will check tonight and see if it is.

     

    i cant actually try this on the R-Pi as i dont have a USB wifi adapter with the broadcom chipset.

     

    http://ubuntuforums.org/showpost.php?p=10527475&postcount=5

     

    hope this helps.

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  • wallarug
    wallarug over 14 years ago in reply to GreenYamo

    With the EDIMAX, it gives me the errors:

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

     

    The "name of the parts" are all different.

     

    What can be done to fix this issue?  This might sovle my problem.

     

    How do you unpack a .ko file?

     

    I didn't unpack mine.  this could be leading to the above issues.








     

    Message was edited by: Fergus Byrne

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  • wallarug
    wallarug over 14 years ago in reply to fustini

    Drew Fustini wrote:

     

    I noticed from the link that Edimax uses the rtl8192cu driver.  I have another adapter (Asus USB-N13) which uses that driver and it did not work by default with the current Raspbian Wheezy image.  However, it did work ok with Adafruit's new image as it includes that driver, so you may want to give that a try: http://learn.adafruit.com/adafruit-raspberry-pi-educational-linux-distro/occidentalis-v0-dot-1

    I do not really want to change image (right now).  But I might give it a go in the future.

     

    Right now though, I just want to get this adapter working. image

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  • fustini
    fustini over 14 years ago in reply to wallarug

    My guess is that the 8192cu.ko module you have doesn't agree with the version of the kernel your running.  a .ko file is a kernel module file and shouldn't have to unpacked.  the utility "modinfo" will print out information about the module.  could you run that and paste the output?  also, could you paste what "uname -a" outputs?  it might be that the kernel versions don't agree.

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  • wallarug
    wallarug over 14 years ago in reply to fustini

    will do image

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  • e14 Contributor
    e14 Contributor over 14 years ago in reply to fustini

    Hey drew,

     

    I installed Occidentalis v10.1 successfully onto my Raspberry Pi's SD card and went to /etc/network/interfaces to add my SSID and password where it wanted me to add it. But for some reason I still can't connect to the Internet wirelessly when my wireless dongle is connected in (I'm using the Zyxel NWD2105 which uses Ralink firmware). When adding my SSID do I keep the quotation marks so it's SSID "xxxx" or do I remove the quotation marks? Is there anything else I must do to get my dongle working?

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  • fustini
    fustini over 14 years ago in reply to e14 Contributor

    Hi Ahmad,

     

    I believe you should keep the quote marks.  An alterative to configuration via /etc/network/interfaces would be to wicd which is a GUI network manager that allows you to configure your wifi adapter.  You should be to install it by entering into the command line: "sudo apt-get install wicd" (while connected to Internet via Ethernet).  I wrote up more detailed instructions in this comment before:

     

    http://www.element14.com/community/docs/DOC-44703/l/raspberry-pi-wifi-adapter-testing#comment-15744

     

    I didn't try to install wicd it on the Adafruit image yet, so I think I'll give it a go this weekend.  I had installed wicd on the "official" Raspbian Wheezy image and it worked well.

     

    Cheers,

    Drew

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  • wallarug
    wallarug over 14 years ago in reply to fustini

    Drew Fustini wrote:

     

    My guess is that the 8192cu.ko module you have doesn't agree with the version of the kernel your running.  a .ko file is a kernel module file and shouldn't have to unpacked.  the utility "modinfo" will print out information about the module.  could you run that and paste the output?  also, could you paste what "uname -a" outputs?  it might be that the kernel versions don't agree.

    Here's the output from uname -a:

    Linux raspberrypi 3.1.9+ #168 PREEMPT Sat Jul 14 18:56:31 BST 2012 armv6l GNU/Linux

     

    I also fixed the problem of the :

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

     

    ...by deleting the driver (8192cu.ko file).

     

    Which leads me to suspect that the RPi s/ware didn't like it.

     

    I can now also tell you that the output of lsusb is:

    Bus 001 Device 007: ID 7392:7811 Edimax Technology Co.,Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS]

     

    I hope this helps you solve my problem.  I also found someone who had the same problem and am reading what they did now: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=26&t=6256&hilit=edimax&start=575

     

    Thanks

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  • wallarug
    wallarug over 14 years ago in reply to wallarug

    THIS IS A MUST ADD TO THE WIKI! (it is already there but is not advertised very well)

     

    http://www.raspberrypi.org/phpBB3/viewtopic.php?f=26&t=6256&hilit=edimax&start=600 

     

    http://dl.dropbox.com/u/80256631/install-rtl8188cus.txt

     

    and

     

    http://dl.dropbox.com/u/80256631/install-rtl8188cus-latest.sh

     

    These solved all my problems in less than 15minutes.  Keep in mind that it only works for some adapters, which are listed on the 1st link.

    The script also installs all the latest updates for the RPi (rpi-update) as well as setting up your wireless.

     

    Great job,  MrEngman

     

    I still wonder how to install my other device though.  So if anyone finds this out, please let me know (it is not really that important now).

     

    Fergus.

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  • e14 Contributor
    e14 Contributor over 14 years ago in reply to wallarug

    8192cu: disagrees about version of symbol <name of part>

    8192cu: Unknown symbol <name of part> (err -22)

     

    ...by deleting the driver (8192cu.ko file).

     

    Which leads me to suspect that the RPi s/ware didn't like it.

    What those messages tell you is that the module you compiled was built against a different kernel than the one you're running. Sometimes this can be as simple as having the exact same kernel source, but just one option has been changed in the .config

     

    To build external modules you need the correct kernel source tree and the .config from the running kernel. You can usually obtain this from the /proc/config.gz file.

     

    It's difficult to cover every possible problem in just a few lines, but here's a basic outline of how it should be done - no idea if this would work for you though

     

    cd /home/pi  - or wherever

    git clone https://github.com/raspberrypi/linux.git - this should leave you with a 'linux' directory eventually, it will take some time

    cd linux

    cp /proc/config.gz .   - copy config of running kernel

    gunzip config.gz       - unpack config

    mv config .config      - move it to (dot)config that leading . is necessary !

    make oldconfig         - this configures the kernel source with the config of your running kernel

     

    if make oldconfig asks lots of confusing questions you don't know how to answer, try make silentoldconfig instead

     

    at this point you can go and build your driver, but you must make sure it uses the kernel source tree you've just configured. You likely need to change two symlinks under /lib/modules/* for this to work properly like this:

     

    rm /lib/modules/`uname -r`/build

    rm /lib/modules/`uname -r`/source

    ln -s /home/pi/linux /lib/modules/`uname -r`/build

    ln -s /home/pi/linux /lib/modules/`uname -r`/source

     

    now build and install your external driver module.

     

    It's sometimes the case that you'll end up with two conflicting versions of a driver, you can search for them like this

     

    find /lib/modules/`uname -r`/ -name 8192cu.ko

     

    if that finds more than one, delete all of them and then re-run the drivers install.

     

    When you're done, run depmod -a hopefully the driver install did it for you, but sometimes they don't.

     

    You should then be able to run modprobe 8192cu to load the module. dmesg will show you any errors.

     

    I hope some of the above helps, but no guarantees - too many assumptions in there for guarantees image

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  • e14 Contributor
    e14 Contributor over 14 years ago in reply to fustini

    Okay, thanks for the help, I really appreciate it Drew and I'll give this a go next time I hook up my Pi up to the internet. Hopefully it will work on adafruit's image because I didn't have much luck with it on Rasbian Wheezy, but it's worth a try.

     

    Edit - Using the WICD software on the adafruit's image I successfully managed to connect to my router using a dongle. Thanks for the help, my Raspberry Pi can now connect to to the internet without an Ethernet cable (which has been an issue to me for quite a while)

     

    Message was edited by: Ahmad A

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  • e14 Contributor
    e14 Contributor over 14 years ago in reply to fustini

    Okay, thanks for the help, I really appreciate it Drew and I'll give this a go next time I hook up my Pi up to the internet. Hopefully it will work on adafruit's image because I didn't have much luck with it on Rasbian Wheezy, but it's worth a try.

     

    Edit - Using the WICD software on the adafruit's image I successfully managed to connect to my router using a dongle. Thanks for the help, my Raspberry Pi can now connect to to the internet without an Ethernet cable (which has been an issue to me for quite a while)

     

    Message was edited by: Ahmad A

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