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Thread: Problem with wireless USB adapter Zonet ZEW2000 (Atmel chip)

  1. #1
    Junior Member
    Join Date
    Nov 2003

    Problem with wireless USB adapter Zonet ZEW2000 (Atmel chip)

    Hi all,

    I have a problem with a wireless USB adapter:

    If it is connected to an USB port while booting, the autoconfigure
    fails, unless I specify the 'nousb' option. When I disconnect the
    adapter Knoppix detects USB and my USB mouse correctly.

    When I then connect the wireless adapter, the whole system freezes
    immediately: no mouse, no keyboard any more, running processes stop,
    e.g. a 'top' does not refresh it's output any more, the clock halts.
    Thus I can't give any info about the adapter as seen from Knoppix.

    There is no difference in behaviour when I specify 'noapic' at boottime.

    The very same adapter works fine under W2K with a driver from Atmel
    (in fact I'm writing this via a LAN connection using that adapter).

    As of the 'Atmel AT76C503A based wireless USB devices' list at
    the chipset, the sourceforge and the AT76C503 USB driver are verified.

    As of
    the driver at
    is recommended. Has Knoppix V3.3 this built in? From
    one can see a 'atmelwlandriver_2.1.2.2-1_i386.deb' is amoung the
    sources. Is this the right one?

    Any hints, how I can proceed further? Has anybody similar problems
    and/or a solution, suggestions?



    Some info about my system:

    Intel board
    Intel PIII processor
    Atmel USB FastVNET (AR)
    Knoppix V3.3 2003-11-14

    Output of lspci:
    00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
    00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03)
    00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
    00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
    00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01)
    00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 02)
    00:0c.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 06)
    00:0d.0 SCSI storage controller: LSI Logic / Symbios Logic 53c810 (rev 12)
    00:0e.0 Network controller: AVM Audiovisuelles MKTG & Computer System GmbH A1 ISDN [Fritz] (rev 02)
    00:0f.0 Multimedia video controller: Brooktree Corporation Bt848 Video Capture (rev 12)
    00:10.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
    01:00.0 VGA compatible controller: nVidia Corporation NV4 [RIVA TNT] (rev 04)

  2. #2
    Junior Member
    Join Date
    Nov 2003
    Please keep us informed on this, as the atmel chipset seems to be a popular one. I have been having the same problems with both of my wi-fi cards:
    Belkin FD6020v2 (PCMCIA)
    Iblitzz BWU613 (USB, this thing has some incredible range)

    The first time I booted up with K3.3-11-14, it actually booted while the usb iblitzz was plugged in. I tried using the wireless configurator, but it did not seem to work. Future attempts to boot, with device plugged in, hung during autoconfiguration.

    Any help would be appreciated

  3. #3
    Junior Member
    Join Date
    Nov 2003
    First success.

    The driver in the current Knoppix distribution seems to be the sourceforge
    one, which has KNOWN problems with usb-uhci.

    Quote from the 'readme'
    There is a serious "conflict" with the usb-uhci driver and atmel's board
    which leads to one problem. The system hangs :( .....

    This never happens with the uhci driver.
    But on my boot, the usb-uhci driver is loaded.

    What I did (in short):

    - got the better driver from
    - compiled it (no problems)
    - made /lib writable (in ramdisk)
    - removed all old driver files in /lib/*
    - installed the new driver
    - plugged in the Atmel device

    Voiala, Knoppix remains stable running,
    'hotplug' did it's job, 'lsusb' reports the driver, iwconfig is usable.

    Details will follow.

    Thanks to all people making Knoppix available!

    best regards


  4. #4
    Junior Member
    Join Date
    Nov 2003
    Details on replacing the sourceforge driver for the Atmel chip with the berlios driver from for KNOPPX V3.3 2003-11-14:

    Under W2K I got the driver and saved it on a my C: FAT filesystem. I got the Version 0.11 beta 6 from the CVS.

    Unplugged the Atmel device and bootet Knoppix from CD.

    Mounted /dev/hda1 on /mnt/hda1 read/write.

    cd to the driver archive, then:
    # unpack archive V 0.11 beta 6
    tar xzvf at76c503a.tar.gz
    # cd into dir with Makefiile
    cd at76c503a/at76c503a
    # alternatively with V 0.10:
    #tar xzvf at76c503-0.10.tar.gz
    #cd at76c503a-0.10
    # compile source
    # become superuser
    # copy /lib from readonly CD to read/write memory
    cp -r /KNOPPIX/lib /ramdisk/libmem
    # relink /lib to the copy
    ln -s -fn /ramdisk/libmem /lib
    # look for old drivers
    locate atmel
    # old drivers are listed in the *.list file
    cat /var/lib/dpkg/info/atmeldriver.list
    grep '\.o' /var/lib/dpkg/info/atmeldriver.list
    # remove old drivers
    rm `grep '\.o' /var/lib/dpkg/info/atmeldriver.list`
    # finally: install the new drivers
    make install
    Now I plugged in the Atmel device: yes, Knoppix remains alive, 'lsusb' shows the new driver installed, with 'iwconfig wlan0' I can configure it.

    Configure details will follow.

    Thanks to the driver authors, well done!


  5. #5
    Junior Member
    Join Date
    Nov 2003
    I write this from Knoppix via a LAN connection using the Atmel wireless adapter (Zonet ZEW2000). So you see: the new berlios driver works!

    Configuration details:

    My accesspoint is configured to accept only specific MAC adresses and WEP encrypted connections. Thus some config of the Atmel wlan adapter is neccessary:

    # become root
    # configure the adapter
    iwconfig wlan0 essid 'homewlan'
    iwconfig wlan0 channel 10
    iwconfig wlan0 mode Managed
    iwconfig wlan0 nick 'homewlan'
    iwconfig wlan0 key XXXX-XXXX-XX restricted
    iwconfig wlan0 rate 11M
    iwconfig wlan0 rate auto
    # display setting for check
    iwconfig wlan0
    # bring up the interface
    ifconfig wlan0 up
    # get a DHCP lease from the access point router
    pump -i wlan0
    # check the routing table
    netstat -r
    # output for me:
    #Kernel IP routing table
    #Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
    #     *        U         0 0          0 wlan0
    #default         UG        0 0          0 wlan0
    # ping the access point router
    ping -c 2
    # ping a foreign host
    ping -c 4
    Both pings should succeed.


    What to do to get the berlios drivers into one of the next Knoppix distributions instead of the sourceforge ones?

    Thanks to all making this possible


  6. #6
    Junior Member
    Join Date
    Nov 2003
    How do we go about asking Mr. Knopper to include this new driver in the next CD Distro?
    It would be nice to finally have a cd that I could just stick in and have everything on my computers work (wlan seems to be the last piece of non-working hardware for me)!!!

    Thanks for the good work!


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