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 * Examine the kernel ring buffer ([[DebMan:1/dmesg|dmesg]]) to verify required firmware files are being loaded by the driver. Lack of firmware is the usual reason for the "SIOCSIFFLAGS: No such file or directory" error message.  * Examine the kernel ring buffer ([[DebianMan:1/dmesg|dmesg]]) to verify required firmware files are being loaded by the driver. Lack of firmware is the usual reason for the "SIOCSIFFLAGS: No such file or directory" error message.

Translation(s): none

(!) ?Discussion

ZyDAS ZD1211/ZD1211B and Atheros AR5007UG devices

This page describes how to enable support for WiFi devices based on ZyDAS ZD1211 chipsets on Debian systems.

zd1211rw is a module for ZyDAS ZD1211, ZD1211B and Atheros AR5007UG USB 802.11g wireless LAN chipsets. This is not to be confused with the zd1201 module which supports the ZD1201 802.11b chipset.

After being acquired by Atheros, the ZyDAS ZD1211B chipset was rebranded as the "Atheros AR5007UG" (also known as AR2524/AR5524). Devices with chipsets bearing these names are also supported.

Non-free firmware is required, which can be provided by installing the zd1211-firmware package.


The zd1211rw driver is included in the mainline Linux kernel since 2.6.18-rc1. It is present in Debian kernel images.

<!> Etch users: Some ZD1211/ZD1211B devices may not be known to the zd1211rw driver in the 2.6.18 kernel. Refer to the troubleshooting section to install a 2.6.24 kernel image.

  1. Add a "non-free" component to /etc/apt/sources.list for your Debian version, for example:

    # Debian Lenny/5.0
    deb http://ftp.us.debian.org/debian lenny main contrib non-free


    # Debian Etch/4.0
    deb http://ftp.us.debian.org/debian etch main contrib non-free
  2. Install the wireless-tools and zd1211-firmware packages:

    aptitude update
    aptitude install wireless-tools zd1211-firmware
  3. Physically connect the device to your system.
  4. The necessary kernel module should be automatically loaded. If necessary, it can be manually loaded via:

    modprobe zd1211rw
  5. Verify your device has an available interface:

  6. Raise the interface to activate the radio, for example:

    ifconfig wlan0 up
  7. Configure your wireless interface as appropriate.


  • Examine the kernel ring buffer (dmesg) to verify required firmware files are being loaded by the driver. Lack of firmware is the usual reason for the "SIOCSIFFLAGS: No such file or directory" error message.

    • Ensure the zd1211-firmware package is installed.

    • If output similar to the following is shown:

      [ 4168.713970] zd1211rw 8-3:1.0: RF MAXIM_NEW_RF 0x8 is not supported
      [ 4171.357272] firmware: requesting zd1211/zd1211b_ub
      [ 4171.375779] firmware: requesting zd1211/zd1211b_uphr
      [ 4193.981056] firmware: requesting zd1211/zd1211b_ub
      [ 4193.986433] firmware: requesting zd1211/zd1211b_uphr
      [ 4195.033695] usb 8-3: USB control request for firmware upload failed. Error number -110
      [ 4195.033703] usb 8-3: Could not upload firmware code uph. Error number -110
      [ 4195.033726] zd1211rw 8-3:1.0: couldn't load firmware. Error number -110

      Install a 2.6.28 (or later) kernel image appropriate for your system, see Debian Kernel Snapshots.

  • Atheros AR5007UG devices based on the UW2453 radio require a 2.6.23 or later kernel.
    • Etch users: Install and boot an EtchAndAHalf kernel (apt-cache search linux-image-2.6- | grep etchnhalf and install a package appropriate for your system).

Supported Devices

The page HowToIdentifyADevice/USB explains how to identify a USB device.

The following list is based on the alias fields of modinfo zd1211rw on Lenny.

  • USB: 0053:5301 (Vendor name unknown) (Device name unknown)
    USB: 0411:00DA MelCo., Inc. WLI-U2-KG54L
    USB: 0471:1236 Philips SNU5600
    USB: 0471:1237 Philips TalkTalk SNU5630NS/05 Wireless Adapter
    USB: 050D:705C Belkin Components F5D7050 v4000 Wireless Adapter
    USB: 0586:3401 ZyXEL Communications Corp. ZyAIR G-220
    USB: 0586:3402 ZyXEL Communications Corp. (ZD1211)IEEE 802.11b+g Adapter
    USB: 0586:3407 ZyXEL Communications Corp. G-200 v2
    USB: 0586:3409 ZyXEL Communications Corp. AG-225H
    USB: 0586:340A ZyXEL Communications Corp. M-202
    USB: 0586:340F ZyXEL Communications Corp. G-220 v2
    USB: 0586:3410 ZyXEL Communications Corp. Wi-Fi Wireless LAN Adapter
    USB: 0586:3412 ZyXEL Communications Corp. Wi-Fi Wireless LAN Adapter
    USB: 0586:3413 ZyXEL Communications Corp. AG-225H v2 802.11a/g Wi-Fi Finder & Adapter
    USB: 079B:004A Sagem XG-760A
    USB: 079B:0062 Sagem XG-76NA
    USB: 07B8:6001 D-Link Corp. WL54
    USB: 083A:4505 Accton Technology Corp. SMCWUSB-G
    USB: 083A:E506 Accton Technology Corp. (Device name unknown)
    USB: 0ACE:1211 ZyDAS 802.11b/g USB2 WiFi
    USB: 0ACE:1215 ZyDAS WLA-54L WiFi
    USB: 0ACE:2011 ZyDAS (Device name unknown)
    USB: 0ACE:20FF ZyDAS (Device name unknown)
    USB: 0B05:170C ASUSTek Computer, Inc. WL-159g
    USB: 0B05:171B ASUSTek Computer, Inc. A9T wireless
    USB: 0B3B:1630 Tekram Technology Co., Ltd QuickWLAN
    USB: 0B3B:5630 Tekram Technology Co., Ltd ZD1211
    USB: 0BAF:0121 U.S. Robotics USR5423 WLAN
    USB: 0CDE:001A Z-Com ZD1211B
    USB: 0DF6:9071 Sitecom Europe B.V. zd1211 802.11g Adapter
    USB: 0DF6:9075 Sitecom Europe B.V. ZD1211B
    USB: 126F:A006 TwinMOS G240
    USB: 129B:1666 CyberTAN Technology TG54USB
    USB: 129B:1667 CyberTAN Technology (Device name unknown)
    USB: 13B1:001E Linksys (Device name unknown)
    USB: 13B1:0024 Linksys WUSBF54G v1.1 802.11g Adapter w/ Wi-Fi Finder
    USB: 1435:0711 Wistron NeWeb UR055G
    USB: 14EA:AB13 Planex Communications GW-US54Mini
    USB: 157E:300A TRENDnet TEW-429UB 802.11g Adapter with HotSpot Detector
    USB: 157E:300B TRENDnet TEW-429UB
    USB: 157E:300D TRENDnet TEW-429UB C1
    USB: 157E:3204 TRENDnet ALL0298 v2
    USB: 1582:6003 Fiberline WL-430U
    USB: 1740:2000 Senao NUB-8301
    USB: 2019:5303 PLANEX GW-US54GXS
    USB: 6891:A727 3Com 3CRUSB10075

  • http://www.linuxwireless.org/en/users/Drivers/zd1211rw/devices - supported devices

See Also