TP-Link TL-WN722N Wifi Problems

[ahmadali]

Hi All

I got my RPi a couple of days ago and have been itching to get started. After checking the working perpherals list I purchased a TP-Link TL-WN722N.

I've followed instructions and guides from various sources (http://elinux.org/RPi_Peripherals#Wirel ... ebian_6.29) including reading around the forum and still can't seem to make the adapter work

I've tried plugging the adapter into a powered USB hub (Xenta 13 USB ) as well as directly into the Pi

Please see files below, any help diagnosing the issue would be really useful.

lsusb & dmesg

Code: Select all

pi@raspberrypi ~ $ sudo lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. 
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. 
Bus 001 Device 004: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port Hub
Bus 001 Device 005: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n
Bus 001 Device 006: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port Hub
Bus 001 Device 008: ID 045e:00dd Microsoft Corp. Comfort Curve Keyboard 2000 V1.0
Bus 001 Device 009: ID 1c4f:0003 SiGma Micro HID controller
pi@raspberrypi ~ $ dmesg
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.1.9+ (dc4@dc4-arm-01) (gcc version 4.7.1 20120402 (prerelease) (crosstool-NG 1.15.2) ) #272 PREEMPT Tue Aug 7 22:51:44 BST 2012
[    0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7), cr=00c5387d
[    0.000000] CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
[    0.000000] Machine: BCM2708
[    0.000000] Memory policy: ECC disabled, Data cache writeback
[    0.000000] On node 0 totalpages: 49152
[    0.000000] free_area_init_node: node 0, pgdat c05efc50, node_mem_map c06c0000
[    0.000000]   Normal zone: 384 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 48768 pages, LIFO batch:15
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 48768
[    0.000000] Kernel command line: dma.dmachans=0x3c bcm2708_fb.fbwidth=1184 bcm2708_fb.fbheight=624 bcm2708.boardrev=0x2 bcm2708.serial=0xee7ba835 smsc95xx.macaddr=B8:27:EB:7B:A8:35 dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait
[    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Memory: 192MB = 192MB total
[    0.000000] Memory: 187912k/187912k available, 8696k reserved, 0K highmem
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     DMA     : 0xffc00000 - 0xffe00000   (   2 MB)
[    0.000000]     vmalloc : 0xcc800000 - 0xd8000000   ( 184 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xcc000000   ( 192 MB)
[    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
[    0.000000]       .text : 0xc0008000 - 0xc058cd80   (5652 kB)
[    0.000000]       .init : 0xc058d000 - 0xc05bf000   ( 200 kB)
[    0.000000]       .data : 0xc05c0000 - 0xc05f13d8   ( 197 kB)
[    0.000000]        .bss : 0xc05f13fc - 0xc06bf60c   ( 825 kB)
[    0.000000] NR_IRQS:245
[    0.000000] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 4294967ms
[    0.000000] timer_set_mode: unhandled mode:1
[    0.000000] timer_set_mode: unhandled mode:3
[    0.000000] Console: colour dummy device 80x30
[    0.000000] console [tty1] enabled
[    0.001268] Calibrating delay loop... 697.95 BogoMIPS (lpj=3489792)
[    0.060195] pid_max: default: 32768 minimum: 301
[    0.060803] Mount-cache hash table entries: 512
[    0.061437] Initializing cgroup subsys cpuacct
[    0.061553] Initializing cgroup subsys devices
[    0.061603] Initializing cgroup subsys freezer
[    0.061644] Initializing cgroup subsys blkio
[    0.061757] CPU: Testing write buffer coherency: ok
[    0.061889] ftrace: allocating 14914 entries in 44 pages
[    0.133691] hw perfevents: enabled with v6 PMU driver, 3 counters available
[    0.135704] devtmpfs: initialized
[    0.142808] NET: Registered protocol family 16
[    0.144706] vc-mem: mm_vc_mem_phys_addr = 0x00000000
[    0.144769] vc-mem: mm_vc_mem_size      = 0x10000000 (256 MiB)
[    0.145276] hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
[    0.145347] hw-breakpoint: maximum watchpoint size is 4 bytes.
[    0.145394] mailbox: Broadcom VideoCore Mailbox driver
[    0.145507] bcm2708_vcio: mailbox at f200b880
[    0.145614] bcm_power: Broadcom power driver
[    0.145660] bcm_power_open() -> 0
[    0.145689] bcm_power_request(0, 8)
[    0.646384] bcm_mailbox_read -> 00000080, 0
[    0.646429] bcm_power_request -> 0
[    0.646460] Serial: AMBA PL011 UART driver
[    0.646652] dev:f1: ttyAMA0 at MMIO 0x20201000 (irq = 83) is a PL011 rev3
[    0.962590] console [ttyAMA0] enabled
[    0.986270] bio: create slab <bio-0> at 0
[    0.991699] SCSI subsystem initialized
[    0.995874] usbcore: registered new interface driver usbfs
[    1.001529] usbcore: registered new interface driver hub
[    1.007233] usbcore: registered new device driver usb
[    1.013251] Switching to clocksource stc
[    1.027358] Switched to NOHz mode on CPU #0
[    1.036177] FS-Cache: Loaded
[    1.039566] CacheFiles: Loaded
[    1.060534] NET: Registered protocol family 2
[    1.065470] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[    1.073959] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[    1.081477] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
[    1.088180] TCP: Hash tables configured (established 8192 bind 8192)
[    1.094562] TCP reno registered
[    1.097767] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    1.103656] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    1.110540] NET: Registered protocol family 1
[    1.115912] RPC: Registered named UNIX socket transport module.
[    1.122095] RPC: Registered udp transport module.
[    1.126828] RPC: Registered tcp transport module.
[    1.131589] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    1.138392] bcm2708_dma: DMA manager at cc808000
[    1.143153] bcm2708_gpio: bcm2708_gpio_probe c05c8220
[    1.148807] vc-mem: Videocore memory driver
[    1.153899] audit: initializing netlink socket (disabled)
[    1.159466] type=2000 audit(0.780:1): initialized
[    1.271257] VFS: Disk quotas dquot_6.5.2
[    1.275460] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    1.283419] FS-Cache: Netfs 'nfs' registered for caching
[    1.290102] msgmni has been set to 367
[    1.296491] io scheduler noop registered
[    1.300660] io scheduler deadline registered (default)
[    1.306028] io scheduler cfq registered
[    1.310271] BCM2708FB: registering framebuffer (1184x624@16)
[    1.316615] bcm2708_fb_set_par info(cb8ed400) 1184x624 (1184x624), 0, 16
[    1.333021] BCM2708FB: start = cca00000,4d385000 width=1184, height=624, bpp=16, pitch=2368 size=1477632 success=0
[    1.343557] Console: switching to colour frame buffer device 148x39
[    1.376844] BCM2708FB: register framebuffer (0)
[    1.382323] kgdb: Registered I/O driver kgdboc.
[    1.402400] brd: module loaded
[    1.415668] loop: module loaded
[    1.423820] vcos: [1]: vchiq_init_state: slot_zero = 0xffd80000, is_master = 0
[    1.435764] vcos: [1]: vchiq_init_state: called
[    1.445468] vcos: [1]: vchiq: initialised - version 2 (min 2), device 253.0
[    1.457517] usbcore: registered new interface driver smsc95xx
[    1.467293] cdc_ncm: 04-Aug-2011
[    1.474652] usbcore: registered new interface driver cdc_ncm
[    1.484336] dwc_otg: version 2.90b 6-MAY-2010 (platform bus)
[    1.494412] Core Release: 2.80a
[    1.501582] Setting default values for core params
[    1.510480] Finished setting default values for core params
[    1.520337] cc840008 -> 1
[    1.726933] Using Buffer DMA mode
[    1.734249] Periodic Transfer Interrupt Enhancement - disabled
[    1.744123] Multiprocessor Interrupt Enhancement - disabled
[    1.753839] dwc_otg bcm2708_usb: DWC OTG Controller
[    1.762905] dwc_otg bcm2708_usb: new USB bus registered, assigned bus number 1
[    1.774325] dwc_otg bcm2708_usb: irq 75, io mem 0x00000000
[    1.783960] Init: Port Power? op_state=1
[    1.791918] Init: Power Port (0)
[    1.799319] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    1.810156] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.821450] usb usb1: Product: DWC OTG Controller
[    1.830217] usb usb1: Manufacturer: Linux 3.1.9+ dwc_otg_hcd
[    1.839894] usb usb1: SerialNumber: bcm2708_usb
[    1.849578] hub 1-0:1.0: USB hub found
[    1.857308] hub 1-0:1.0: 1 port detected
[    1.866050] Module dwc_common_port init
[    1.866453] usbcore: registered new interface driver uas
[    1.875825] Initializing USB Mass Storage driver...
[    1.884906] usbcore: registered new interface driver usb-storage
[    1.894788] USB Mass Storage support registered.
[    1.903546] usbcore: registered new interface driver libusual
[    1.913842] mousedev: PS/2 mouse device common for all mice
[    1.923319] cpuidle: using governor ladder
[    1.931368] cpuidle: using governor menu
[    1.939171] sdhci: Secure Digital Host Controller Interface driver
[    1.949248] sdhci: Copyright(c) Pierre Ossman
[    1.957747] bcm_power_open() -> 1
[    1.965071] Registered led device: mmc0::
[    1.965586] mmc0: SDHCI controller on BCM2708_Arasan [platform] using platform's DMA
[    1.977435] mmc0: BCM2708 SDHC host at 0x20300000 DMA 2 IRQ 77
[    1.987199] sdhci-pltfm: SDHCI platform and OF driver helper
[    1.998208] Registered led device: led0
[    1.998691] usbcore: registered new interface driver usbhid
[    2.008102] usbhid: USB HID core driver
[    2.017584] TCP cubic registered
[    2.026687] Initializing XFRM netlink socket
[    2.038040] NET: Registered protocol family 17
[    2.048639] Registering the dns_resolver key type
[    2.057295] VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
[    2.097580] Waiting for root device /dev/mmcblk0p2...
[    2.120655] mmc0: new high speed SDHC card at address b368
[    2.147493] mmcblk0: mmc0:b368 SDC   30.2 GiB 
[    2.157650]  mmcblk0: p1 p2
[    2.225682] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    2.238142] VFS: Mounted root (ext4 filesystem) on device 179:2.
[    2.249649] Freeing init memory: 200K
[    2.297510] usb 1-1: new high speed USB device number 2 using dwc_otg
[    2.528117] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
[    2.540107] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    2.556064] hub 1-1:1.0: USB hub found
[    2.565507] hub 1-1:1.0: 3 ports detected
[    2.847739] usb 1-1.1: new high speed USB device number 3 using dwc_otg
[    2.958107] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[    2.987559] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.005797] smsc95xx v1.0.4
[    3.073196] smsc95xx 1-1.1:1.0: eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:7b:a8:35
[    3.197739] usb 1-1.2: new high speed USB device number 4 using dwc_otg
[    3.328353] usb 1-1.2: New USB device found, idVendor=1a40, idProduct=0201
[    3.357550] usb 1-1.2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[    3.377585] usb 1-1.2: Product: USB 2.0 Hub [MTT]
[    3.396678] hub 1-1.2:1.0: USB hub found
[    3.417733] hub 1-1.2:1.0: 7 ports detected
[    3.517734] usb 1-1.3: new high speed USB device number 5 using dwc_otg
[    3.658728] usb 1-1.3: New USB device found, idVendor=0cf3, idProduct=9271
[    3.682182] usb 1-1.3: New USB device strings: Mfr=16, Product=32, SerialNumber=48
[    3.694989] usb 1-1.3: Product: USB2.0 WLAN
[    3.707589] usb 1-1.3: Manufacturer: ATHEROS
[    3.716145] usb 1-1.3: SerialNumber: 12345
[    3.827733] usb 1-1.2.5: new high speed USB device number 6 using dwc_otg
[    3.948348] usb 1-1.2.5: New USB device found, idVendor=1a40, idProduct=0201
[    3.974343] usb 1-1.2.5: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[    3.990053] usb 1-1.2.5: Product: USB 2.0 Hub [MTT]
[    4.010650] hub 1-1.2.5:1.0: USB hub found
[    4.030896] hub 1-1.2.5:1.0: 7 ports detected
[    4.317735] usb 1-1.2.5.5: new low speed USB device number 7 using dwc_otg
[    4.452796] usb 1-1.2.5.5: New USB device found, idVendor=1c4f, idProduct=0003
[    4.480324] usb 1-1.2.5.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    4.512690] usb 1-1.2.5.5: Product: Usb Mouse
[    4.533309] usb 1-1.2.5.5: Manufacturer: SIGMACHIP
[    4.580335] input: SIGMACHIP Usb Mouse as /devices/platform/bcm2708_usb/usb1/1-1/1-1.2/1-1.2.5/1-1.2.5.5/1-1.2.5.5:1.0/input/input0
[    4.635398] generic-usb 0003:1C4F:0003.0001: input: USB HID v1.10 Mouse [SIGMACHIP Usb Mouse] on usb-bcm2708_usb-1.2.5.5/input0
[    4.777768] usb 1-1.2.5.7: new low speed USB device number 8 using dwc_otg
[    4.928420] usb 1-1.2.5.7: New USB device found, idVendor=045e, idProduct=00dd
[    4.965306] usb 1-1.2.5.7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    5.007536] usb 1-1.2.5.7: Product: Comfort Curve Keyboard 2000
[    5.039956] usb 1-1.2.5.7: Manufacturer: Microsoft
[    5.091187] input: Microsoft Comfort Curve Keyboard 2000 as /devices/platform/bcm2708_usb/usb1/1-1/1-1.2/1-1.2.5/1-1.2.5.7/1-1.2.5.7:1.0/input/input1
[    5.178185] generic-usb 0003:045E:00DD.0002: input: USB HID v1.11 Keyboard [Microsoft Comfort Curve Keyboard 2000] on usb-bcm2708_usb-1.2.5.7/input0
[    5.278584] input: Microsoft Comfort Curve Keyboard 2000 as /devices/platform/bcm2708_usb/usb1/1-1/1-1.2/1-1.2.5/1-1.2.5.7/1-1.2.5.7:1.1/input/input2
[    5.348089] generic-usb 0003:045E:00DD.0003: input: USB HID v1.11 Device [Microsoft Comfort Curve Keyboard 2000] on usb-bcm2708_usb-1.2.5.7/input1
[    7.311585] usb 1-1.2.5.5: USB disconnect, device number 7
[    7.952339] cfg80211: Calling CRDA to update world regulatory domain
[    8.567751] usb 1-1.2.5.5: new low speed USB device number 9 using dwc_otg
[    8.693147] usb 1-1.3: ath9k_htc: Firmware - htc_9271.fw not found
[    8.711315] usb 1-1.2.5.5: New USB device found, idVendor=1c4f, idProduct=0003
[    8.737551] usb 1-1.2.5.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    8.765610] usb 1-1.2.5.5: Product: Usb Mouse
[    8.776599] ath9k_htc: probe of 1-1.3:1.0 failed with error -22
[    8.788997] usb 1-1.2.5.5: Manufacturer: SIGMACHIP
[    8.810716] usbcore: registered new interface driver ath9k_htc
[    8.829231] input: SIGMACHIP Usb Mouse as /devices/platform/bcm2708_usb/usb1/1-1/1-1.2/1-1.2.5/1-1.2.5.5/1-1.2.5.5:1.0/input/input3
[    8.878040] generic-usb 0003:1C4F:0003.0004: input: USB HID v1.10 Mouse [SIGMACHIP Usb Mouse] on usb-bcm2708_usb-1.2.5.5/input0
[   13.649557] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[   14.013446] ### snd_bcm2835_alsa_probe c05c88e0 ############### PROBING FOR bcm2835 ALSA device (0):(1) ###############
[   14.037088] Creating card...
[   14.046367] Creating device/chip ..
[   14.056732] Adding controls ..
[   14.066026] Registering card ....
[   14.085049] bcm2835 ALSA CARD CREATED!
[   14.103285] ### BCM2835 ALSA driver init OK ### 
[   25.679284] Adding 102396k swap on /var/swap.  Priority:-1 extents:1 across:102396k SS
[   46.867509] smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000114
[   51.867440] smsc95xx 1-1.1:1.0: eth0: Failed to write register index 0x00000114
[   60.217442] smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000114
[   60.217477] smsc95xx 1-1.1:1.0: eth0: MII is busy in smsc95xx_mdio_read
[   65.217445] smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000114
[   65.217481] smsc95xx 1-1.1:1.0: eth0: MII is busy in smsc95xx_mdio_read
[   71.217447] smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000114
[   76.727597] usb 1-1.2.5.7: reset low speed USB device number 8 using dwc_otg
[   80.327637] usb 1-1.2.5.7: reset low speed USB device number 8 using dwc_otg
[   89.187441] smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000114
[   94.187449] smsc95xx 1-1.1:1.0: eth0: Failed to write register index 0x00000114
[   99.187441] smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000114
[  104.187458] smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000118
[  109.187445] smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000114
[  114.187445] smsc95xx 1-1.1:1.0: eth0: Failed to write register index 0x00000114

/etc/network/interfaces

Code: Select all

auto lo

iface lo inet loopback
iface eth0 inet dhcp

auto wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa.conf

/etc/wpa.conf PS - I removed my wifi config details

Code: Select all

network={
ssid="testnetwork1"
key_mgmt=WPA-PSK
psk="1234567890"
}

/etc/apt/sources.list

Code: Select all

deb http://mirrordirector.raspbian.org/raspbian/ wheezy main contrib non-free rpi
deb ftp://ftp.us.debian.org/debian/ squeeze main non-free
deb http://security.debian.org/ squeeze/updates main non-free
deb ftp://ftp.us.debian.org/debian/ squeeze-updates main non-free
deb http://backports.debian.org/debian-backports squeeze-backports main non-free

Thanks in advance!

[Andrepocalypse]

The e-Linux link you have may not work as it is out of date - I am in same situation as you so I'm not an expert.

[greypower]

I would suggest you update to the latest firmware using rpi-update.

[pjc123]

I can only speak for Debian Wheezy, but I have the TL_WN722N working without any issues. Yes, I have to agree (For Wheezy anyway) that the instructions on elinux are out of date. I went through the steps, and many, if not all of the steps either didn't apply or the software was already installed.

The first thing I would suggest is that you not use the wpa-conf file while troubleshooting because it is a real bear to set up properly, although I do have it working. Put everything in the interfaces file. As a WPA example:

Code: Select all

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
auto wlan0

iface wlan0 inet dhcp
wpa-ssid “ENTER SSID HERE”
wpa-psk “ENTER KEY HERE”

The other problem is that the TL_WN722N takes a lot of power and requires that you do one of the following:

1) Find a hub that works with it. Good luck. It appears to be a nightmare trying to find a hub that works with a specific device with the pi from what I gather reading through the forums.

2) Short the USB polyfuses like several have done to get more power to the USB ports. That is something I will be trying in the future, since current shipping pi devices come this way now.

3) Use a Y splitter cable to get power from both usb ports. That is what I am doing now and it works, but that means you need to run headless (preferred method in my case) because all the USB ports will be used up (No keyboard and mouse). I used VNC and the wired internet to set up the wireless connection.

4) Give up and buy another wifi dongle. I also have a Edimax EW-7811UN clone working, but it is not without its own issues. The correct driver is not installed by default and it requires the use of MrEngmans driver, and must be reinstalled occasionally when a new kernel is installed. The good news is that it can be plugged directly into the pi without any power issues.

[Erico]

Im having issues with this module too, although discovered that what is causing misfunction is the keyboard. Tried 2 keyboards with no success. No clue what´s the next step. Im almost buying an edimax module.

[ahmadali]

Hi Guys

Apologies for the lack of update, Just got back from holiday. I just bought an Edimax micro receiver so am hoping will have more luck.

I'm also buying a non-generic USB hub in the hope it helps.

Thanks, Ahmad

[pjc123]

Hi Guys

Apologies for the lack of update, Just got back from holiday. I just bought an Edimax micro receiver so am hoping will have more luck.

I'm also buying a non-generic USB hub in the hope it helps.

Thanks, Ahmad

I love my TP-Link TL-WN722N so much on the pi, I am ordering a second one for my desktop. It already has excellent gain, but I am even kicking it up a notch more with an external antenna that has double the gain; my pi will be completely encased in a large box with other circuitry, so I need a wired external antenna anyway. Maybe I can buy yours at a discount ! Only kidding, as it would not be worth it with the price of shipping, and the fact that Amazon offers free shipping on Tp-Link.

When you get your Edimax, use Engmanns script unless you want to go through this pain all over again. It worked for me right off the bat, and if you have problems, there is an ongoing thread where he offers assistance.

[ahmadali]

Just a quick update.

I got the nano wifi receiver working without any issues!

[omiez]

I used the TL-WN722N on Raspbian and i noticed that the system hangs from time to time, i am using the adapter on a USB Hub which has connected only the Wifi and a HDD and has a 2A power supply.

I let the system on over night and when i came back there was no response and when i rebooted either the Hdd and the adapter wasn't recognized from the system.

Is there anyone experiencing problems like this with this adapter?

At the moment i am using a Asus N10 and it seems to work but i want to use the Tp-Link for my second Raspberry.