Author Topic: TP-LINK TL-WN721N wireless adapter [SOLVED]  (Read 7762 times)

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Offline jiaweihuo

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TP-LINK TL-WN721N wireless adapter [SOLVED]
« on: April 28, 2013, 04:42:20 am »
My laptop has a Ralink wireless adapter, which sometimes causes problems. So I bought a USB wireless adapter TL-WN721N, but I do not know how to use it. Can someone help me? The system is Ubuntu 12.04 3.2.0-40-generic.

After running
Quote
sudo lshw -C network;ifconfig;iwconfig;iwlist scanning;rfkill list

we have
Quote
  *-network               
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth0
       version: 07
       serial: 2c:d4:44:b6:ee:dc
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:43 ioport:3000(size=256) memory:f1404000-f1404fff memory:f1400000-f1403fff
  *-network
       description: Wireless interface
       product: Ralink corp.
       vendor: Ralink corp.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: ra0
       version: 00
       serial: 24:ec:99:4d:3e:32
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=RALINK WLAN ip=192.168.1.2 latency=0 multicast=yes wireless=Ralink STA
       resources: irq:18 memory:f1d10000-f1d1ffff
eth0      Link encap:Ethernet  HWaddr 2c:d4:44:b6:ee:dc 
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:43 Base address:0x4000

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:8428 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8428 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1451074 (1.4 MB)  TX bytes:1451074 (1.4 MB)

ra0       Link encap:Ethernet  HWaddr 24:ec:99:4d:3e:32 
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::26ec:99ff:fe4d:3e32/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1485474 errors:3 dropped:0 overruns:0 frame:0
          TX packets:699445 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1638820530 (1.6 GB)  TX bytes:86808639 (86.8 MB)
          Interrupt:18

lo        no wireless extensions.

ra0       Ralink STA  ESSID:"jinjiefu"  Nickname:"RT3290STA"
          Mode:Managed  Frequency=2.412 GHz  Access Point: 00:23:CD:17:A4:38   
          Bit Rate=135 Mb/s   
          RTS thr:off   Fragment thr:off
          Link Quality=83/100  Signal level:-60 dBm  Noise level:-84 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

eth0      no wireless extensions.

lo        Interface doesn't support scanning.

ra0       Scan completed :
          Cell 01 - Address: 00:23:CD:17:A4:38
                    Protocol:802.11b/g/n
                    ESSID:"jinjiefu"
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality=76/100  Signal level=-60 dBm  Noise level=-92 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 02 - Address: 98:FC:11:B7:B9:BE
                    Protocol:802.11b/g/n
                    ESSID:"USER-VAIO_Network"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality=39/100  Signal level=-74 dBm  Noise level=-69 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                       Preauthentication Supported
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 03 - Address: 00:11:6B:2B:73:F2
                    Protocol:802.11b/g/n
                    ESSID:"fuckyou"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality=55/100  Signal level=-68 dBm  Noise level=-92 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD270050F204104A000110104400010210470010000400000000C0A8000100116B2B73F2103C000101
          Cell 04 - Address: 90:F6:52:A5:53:26
                    Protocol:802.11b/g/n
                    ESSID:"chow home"
                    Mode:Managed
                    Frequency:2.452 GHz (Channel 9)
                    Quality=24/100  Signal level=-80 dBm  Noise level=-75 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 05 - Address: 90:F6:52:84:6D:DC
                    Protocol:802.11b/g/n
                    ESSID:"YUEN"
                    Mode:Managed
                    Frequency:2.452 GHz (Channel 9)
                    Quality=5/100  Signal level=-88 dBm  Noise level=-83 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 06 - Address: 00:22:3F:13:05:1A
                    Protocol:802.11b/g
                    ESSID:"NETGEAR"
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality=10/100  Signal level=-86 dBm  Noise level=-81 dBm
                    Encryption key:off
                    Bit Rates:54 Mb/s
          Cell 07 - Address: C8:D1:5E:FF:0D:34
                    Protocol:802.11b/g/n
                    ESSID:"jimjim147"
                    Mode:Managed
                    Frequency:2.452 GHz (Channel 9)
                    Quality=5/100  Signal level=-88 dBm  Noise level=-83 dBm
                    Encryption key:on
                    Bit Rates:135 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD270050F204104A0001101044000102104700102880288028801880A880C8D15EFF0D34103C000101
          Cell 08 - Address: 54:E6:FC:EB:68:C2
                    Protocol:802.11b/g/n
                    ESSID:"ChingChing"
                    Mode:Managed
                    Frequency:2.427 GHz (Channel 4)
                    Quality=0/100  Signal level=-90 dBm  Noise level=-85 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 09 - Address: A0:F3:C1:56:B4:BA
                    Protocol:802.11b/g/n
                    ESSID:"MERCUSYS_56B4BA"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality=10/100  Signal level=-86 dBm  Noise level=-81 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 10 - Address: 00:22:93:26:A4:72
                    Protocol:802.11b/g
                    ESSID:"williamcoverdal"
                    Mode:Managed
                    Frequency:2.422 GHz (Channel 3)
                    Quality=65/100  Signal level=-64 dBm  Noise level=-92 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 11 - Address: 52:E6:76:64:E9:74
                    Protocol:802.11b/g/n
                    ESSID:"4CE67664E974-1"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality=0/100  Signal level=-92 dBm  Noise level=-87 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 12 - Address: 20:CF:30:B8:3C:10
                    Protocol:802.11b/g/n
                    ESSID:"Laputa2.4"
                    Mode:Managed
                    Frequency:2.472 GHz (Channel 13)
                    Quality=20/100  Signal level=-82 dBm  Noise level=-77 dBm
                    Encryption key:on
                    Bit Rates:144 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 13 - Address: 00:21:27:DC:87:08
                    Protocol:802.11b/g
                    ESSID:"TP-LINKAAT"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality=5/100  Signal level=-88 dBm  Noise level=-83 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                       Preauthentication Supported
          Cell 14 - Address: 4C:ED:DE:92:F0:07
                    Protocol:802.11b/g/n
                    ESSID:""
                    Mode:Managed
                    Frequency:2.452 GHz (Channel 9)
                    Quality=0/100  Signal level=-90 dBm  Noise level=-85 dBm
                    Encryption key:on
                    Bit Rates:130 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
          Cell 15 - Address: 54:E6:FC:C9:7F:F2
                    Protocol:802.11b/g/n
                    ESSID:"TP-LINK_daniel"
                    Mode:Managed
                    Frequency:2.472 GHz (Channel 13)
                    Quality=0/100  Signal level=-94 dBm  Noise level=-89 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 16 - Address: 90:F6:52:6A:D3:AA
                    Protocol:802.11b/g/n
                    ESSID:"Chris"
                    Mode:Managed
                    Frequency:2.427 GHz (Channel 4)
                    Quality=0/100  Signal level=-90 dBm  Noise level=-85 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 17 - Address: 4C:E6:76:64:E9:74
                    Protocol:802.11b/g/n
                    ESSID:"4CE67664E974-2"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality=0/100  Signal level=-90 dBm  Noise level=-85 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD220050F204104A000110104400010210470010E586ABB2F69A11DE8C6083608C225558
          Cell 18 - Address: 10:6F:3F:3D:AE:E6
                    Protocol:802.11b/g/n
                    ESSID:"LCK-ROUTER"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality=5/100  Signal level=-88 dBm  Noise level=-83 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD220050F204104A000110104400010210470010D713E364343D11E1882607C6205F9FC3
          Cell 19 - Address: 68:7F:74:E7:FA:63
                    Protocol:802.11b/g
                    ESSID:"CEDARS-WRT54G-16"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality=0/100  Signal level=-92 dBm  Noise level=-87 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                       Preauthentication Supported
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 20 - Address: D8:5D:4C:A7:41:0C
                    Protocol:802.11b/g
                    ESSID:"TP-LINK_A7410C"
                    Mode:Managed
                    Frequency:2.442 GHz (Channel 7)
                    Quality=0/100  Signal level=-90 dBm  Noise level=-85 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 21 - Address: C8:3A:35:58:23:70
                    Protocol:802.11b/g/n
                    ESSID:"NicksHome"
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality=15/100  Signal level=-84 dBm  Noise level=-92 dBm
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                       Preauthentication Supported
          Cell 22 - Address: B4:B3:62:77:A6:6D
                    Protocol:802.11b/g/n
                    ESSID:"mohammedzaid"
                    Mode:Managed
                    Frequency:2.442 GHz (Channel 7)
                    Quality=29/100  Signal level=-78 dBm  Noise level=-73 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 23 - Address: BA:B3:62:77:A6:6D
                    Protocol:802.11b/g
                    ESSID:""
                    Mode:Managed
                    Frequency:2.442 GHz (Channel 7)
                    Quality=39/100  Signal level=-74 dBm  Noise level=-69 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
          Cell 24 - Address: F8:1A:67:AD:3E:FA
                    Protocol:802.11b/g/n
                    ESSID:"MS LEE"
                    Mode:Managed
                    Frequency:2.452 GHz (Channel 9)
                    Quality=0/100  Signal level=-92 dBm  Noise level=-87 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD260050F204104A0001101044000102104900140024E26002000101600000020001600100020001
          Cell 25 - Address: 74:EA:3A:C4:D7:4E
                    Protocol:802.11b/g
                    ESSID:"ALICE-HP_Network"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality=0/100  Signal level=-92 dBm  Noise level=-87 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 26 - Address: 00:22:B0:CB:BD:C5
                    Protocol:802.11b/g/n
                    ESSID:"Faith"
                    Mode:Managed
                    Frequency:2.472 GHz (Channel 13)
                    Quality=0/100  Signal level=-92 dBm  Noise level=-87 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 27 - Address: 4C:E6:76:CC:EA:15
                    Protocol:802.11b/g/n
                    ESSID:"4CE676CCEA15"
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality=5/100  Signal level=-88 dBm  Noise level=-83 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD220050F204104A000110104400010210470010E586BBB6F69A11DE87C9D1F679FF788F
          Cell 28 - Address: B6:74:9F:53:56:93
                    Protocol:802.11b/g/n
                    ESSID:""
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality=10/100  Signal level=-86 dBm  Noise level=-81 dBm
                    Encryption key:on
                    Bit Rates:130 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 29 - Address: 00:1F:33:DE:2E:1C
                    Protocol:802.11b/g/n
                    ESSID:"JACKY"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality=0/100  Signal level=-92 dBm  Noise level=-87 dBm
                    Encryption key:on
                    Bit Rates:270 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 30 - Address: F8:D1:11:84:40:E8
                    Protocol:802.11b/g/n
                    ESSID:"whoomp"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality=5/100  Signal level=-88 dBm  Noise level=-83 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD3F0050F204104A00011010440001021047001000000000000010000000F8D111844010103C000101104900140024E26002000101600000020001600100020001
          Cell 31 - Address: BE:B3:62:70:1D:39
                    Protocol:802.11b/g
                    ESSID:""
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality=0/100  Signal level=-90 dBm  Noise level=-85 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 32 - Address: C8:60:00:AD:30:74
                    Protocol:802.11b/g
                    ESSID:"Marco's PC"
                    Mode:Managed
                    Frequency:2.447 GHz (Channel 8)
                    Quality=10/100  Signal level=-86 dBm  Noise level=-81 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 33 - Address: 00:22:93:3F:C7:CF
                    Protocol:802.11b/g
                    ESSID:""
                    Mode:Managed
                    Frequency:2.452 GHz (Channel 9)
                    Quality=15/100  Signal level=-84 dBm  Noise level=-79 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
          Cell 34 - Address: 08:86:3B:08:A5:F8
                    Protocol:802.11b/g/n
                    ESSID:"NIKLEB"
                    Mode:Managed
                    Frequency:2.412 GHz (Channel 1)
                    Quality=5/100  Signal level=-88 dBm  Noise level=-93 dBm
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 35 - Address: 00:22:93:26:A4:74
                    Protocol:802.11b/g
                    ESSID:""
                    Mode:Managed
                    Frequency:2.422 GHz (Channel 3)
                    Quality=65/100  Signal level=-64 dBm  Noise level=-92 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
          Cell 36 - Address: 00:25:86:CD:1F:0E
                    Protocol:802.11b/g
                    ESSID:"TP-LINK_CD1F0E"
                    Mode:Managed
                    Frequency:2.427 GHz (Channel 4)
                    Quality=0/100  Signal level=-94 dBm  Noise level=-89 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                       Preauthentication Supported
          Cell 37 - Address: B0:48:7A:FD:A9:64
                    Protocol:802.11b/g
                    ESSID:"THOME"
                    Mode:Managed
                    Frequency:2.427 GHz (Channel 4)
                    Quality=0/100  Signal level=-92 dBm  Noise level=-87 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: Unknown: DD0E0050F204104A0001101044000101
          Cell 38 - Address: 64:70:02:92:2F:5A
                    Protocol:802.11b/g/n
                    ESSID:"ideal home"
                    Mode:Managed
                    Frequency:2.437 GHz (Channel 6)
                    Quality=0/100  Signal level=-94 dBm  Noise level=-89 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD0E0050F204104A0001101044000101
          Cell 39 - Address: 68:7F:74:FD:AD:0A
                    Protocol:802.11b/g
                    ESSID:"CEDARS-WRT54G-18"
                    Mode:Managed
                    Frequency:2.452 GHz (Channel 9)
                    Quality=0/100  Signal level=-90 dBm  Noise level=-85 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 40 - Address: B4:B3:62:79:0E:8D
                    Protocol:802.11b/g/n
                    ESSID:"sweetapple"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality=24/100  Signal level=-80 dBm  Noise level=-75 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 41 - Address: 5A:E6:76:64:E9:74
                    Protocol:802.11b/g
                    ESSID:"4CE67664E974"
                    Mode:Managed
                    Frequency:2.462 GHz (Channel 11)
                    Quality=10/100  Signal level=-86 dBm  Noise level=-81 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
          Cell 42 - Address: 00:25:12:63:F9:DE
                    Protocol:802.11b/g
                    ESSID:""
                    Mode:Managed
                    Frequency:2.417 GHz (Channel 2)
                    Quality=10/100  Signal level=-86 dBm  Noise level=-81 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
          Cell 43 - Address: 00:15:EB:60:4E:06
                    Protocol:802.11b/g
                    ESSID:""
                    Mode:Managed
                    Frequency:2.422 GHz (Channel 3)
                    Quality=55/100  Signal level=-68 dBm  Noise level=-92 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
          Cell 44 - Address: 00:22:93:3E:A4:07
                    Protocol:802.11b/g
                    ESSID:"Model Genesis 9"
                    Mode:Managed
                    Frequency:2.427 GHz (Channel 4)
                    Quality=0/100  Signal level=-94 dBm  Noise level=-89 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 45 - Address: BE:B3:62:77:A6:6D
                    Protocol:802.11b/g/n
                    ESSID:""
                    Mode:Managed
                    Frequency:2.442 GHz (Channel 7)
                    Quality=29/100  Signal level=-78 dBm  Noise level=-73 dBm
             
« Last Edit: April 29, 2013, 10:52:13 am by jiaweihuo »

Online Mark Greaves (PCNetSpec)

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #1 on: April 28, 2013, 10:49:39 am »
Can you explain what the problem appears to be .. according to your output, the card appears to be working, connected to the "jinjiefu" access point, and also detecting another 44 different access points.
(where are you where there's 45 access points in range ?)

Can you also post the output from:
Code: [Select]
lsusb
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Offline jiaweihuo

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #2 on: April 28, 2013, 11:45:03 am »
My original wireless card is working. But my problem is now I want to use a USB wireless card.

Here is the output of "lsusb":
Quote
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 04f2:b319 Chicony Electronics Co., Ltd
Bus 002 Device 003: ID 08ff:2683 AuthenTec, Inc.
Bus 003 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 003 Device 003: ID 05ac:1265 Apple, Inc. iPod Nano 5.Gen
Bus 003 Device 004: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n

Offline SeZo

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #3 on: April 28, 2013, 11:53:58 am »
Unless you disable (in BIOS or with hardware switch) the built in wireless card will take precedence over the plug in adaptor.
If you can not disable, then remove it :)

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #4 on: April 28, 2013, 11:59:46 am »
Was the tplink plugged in when you ran that "lsusb" ?
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Offline jiaweihuo

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #5 on: April 28, 2013, 12:00:16 pm »
Yes.

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #6 on: April 28, 2013, 12:11:54 pm »
and was the internal wireless adapter disabled ?
« Last Edit: April 28, 2013, 12:18:33 pm by Mark Greaves (PCNetSpec) »
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Offline jiaweihuo

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #7 on: April 28, 2013, 12:16:36 pm »
I rerun the command "sudo lshw -C network;ifconfig;iwconfig;iwlist scanning;rfkill list" after shutting down the internal one and get

Quote
*-network               
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth0
       version: 07
       serial: 2c:d4:44:b6:ee:dc
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:43 ioport:3000(size=256) memory:f1404000-f1404fff memory:f1400000-f1403fff
  *-network
       description: Wireless interface
       product: Ralink corp.
       vendor: Ralink corp.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: ra0
       version: 00
       serial: 24:ec:99:4d:3e:32
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=RALINK WLAN latency=0 multicast=yes wireless=Ralink STA
       resources: irq:18 memory:f1d10000-f1d1ffff
eth0      Link encap:Ethernet  HWaddr 2c:d4:44:b6:ee:dc 
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:43 Base address:0x4000

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2273 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2273 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:370131 (370.1 KB)  TX bytes:370131 (370.1 KB)

ra0       Link encap:Ethernet  HWaddr 24:ec:99:4d:3e:32 
          inet6 addr: fe80::26ec:99ff:fe4d:3e32/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:106811 errors:1 dropped:0 overruns:0 frame:0
          TX packets:31947 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:39790892 (39.7 MB)  TX bytes:18498026 (18.4 MB)
          Interrupt:18

lo        no wireless extensions.

ra0       Ralink STA  ESSID:""  Nickname:"RT3290STA"
          Mode:Auto  Frequency=2.412 GHz  Access Point: 00:23:CD:17:A4:38   
          Bit Rate=1 Mb/s   
          RTS thr:off   Fragment thr:off
          Link Quality=86/100  Signal level:0 dBm  Noise level:0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

eth0      no wireless extensions.

lo        Interface doesn't support scanning.

ra0       No scan results

eth0      Interface doesn't support scanning.

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #8 on: April 28, 2013, 12:19:01 pm »
With the tplink plugged in, what's the output from:
Code: [Select]
lsmod | grep ath9k
?
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Re: TP-LINK TL-WN721N wireless adapter
« Reply #9 on: April 28, 2013, 12:21:18 pm »
With the tplink plugged in, what's the output from:
Code: [Select]
lsmod | grep ath9k
?


Quote
ath9k_htc              92738  0
mac80211              506862  1 ath9k_htc
ath9k_common           14053  1 ath9k_htc
ath9k_hw              411239  2 ath9k_htc,ath9k_common
ath                    24067  3 ath9k_htc,ath9k_common,ath9k_hw
cfg80211              205774  3 ath9k_htc,mac80211,ath

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #10 on: April 28, 2013, 12:25:23 pm »
Can you send the output from:
Code: [Select]
lsmod

Can you then unplug the tplink .. wait 10 seconds .. replug the tplink .. then send the output from:
Code: [Select]
dmesg | tail -n 40
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Re: TP-LINK TL-WN721N wireless adapter
« Reply #11 on: April 28, 2013, 12:40:02 pm »
lsmod:
Quote
Module                  Size  Used by
ath9k_htc              92738  0
mac80211              506862  1 ath9k_htc
ath9k_common           14053  1 ath9k_htc
ath9k_hw              411239  2 ath9k_htc,ath9k_common
ath                    24067  3 ath9k_htc,ath9k_common,ath9k_hw
cfg80211              205774  3 ath9k_htc,mac80211,ath
nls_iso8859_1          12713  0
nls_cp437              16991  0
vfat                   17585  0
fat                    61512  1 vfat
usb_storage            49243  0
rfcomm                 47604  0
joydev                 17693  0
parport_pc             32866  0
ppdev                  17113  0
lp                     17799  0
parport                46562  3 parport_pc,ppdev,lp
snd_hda_codec_hdmi     32474  1
snd_hda_codec_realtek   224173  1
bnep                   18281  2
bluetooth             180153  10 rfcomm,bnep
binfmt_misc            17540  1
snd_hda_intel          33719  3
snd_hda_codec         127706  3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep              17764  1 snd_hda_codec
usbhid                 47238  0
hid                    99636  1 usbhid
i915                  477748  3
snd_pcm                97275  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi           13324  0
snd_rawmidi            30748  1 snd_seq_midi
snd_seq_midi_event     14899  1 snd_seq_midi
snd_seq                61929  2 snd_seq_midi,snd_seq_midi_event
fujitsu_laptop         18992  0
snd_timer              29990  2 snd_pcm,snd_seq
snd_seq_device         14540  3 snd_seq_midi,snd_rawmidi,snd_seq
mac_hid                13253  0
uvcvideo               72627  0
nouveau               775039  0
snd                    79041  16 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
videodev               98259  1 uvcvideo
v4l2_compat_ioctl32    17128  1 videodev
dm_multipath           23275  0
ttm                    76949  1 nouveau
drm_kms_helper         46978  2 i915,nouveau
psmouse                97485  0
rt3290sta            1182379  1
drm                   241971  6 i915,nouveau,ttm,drm_kms_helper
serio_raw              13211  0
soundcore              15091  1 snd
snd_page_alloc         18529  2 snd_hda_intel,snd_pcm
i2c_algo_bit           13423  2 i915,nouveau
mxm_wmi                13021  1 nouveau
mei                    41616  0
wmi                    19256  1 mxm_wmi
video                  19651  2 i915,nouveau
dm_raid45              78155  0
r8169                  62154  0
xor                    12894  1 dm_raid45
dm_mirror              22203  0
dm_region_hash         20961  1 dm_mirror
dm_log                 18564  3 dm_raid45,dm_mirror,dm_region_hash
jiaweihuo@jiaweihuo-LIFEBOOK-LH772:~$ lsmod
Module                  Size  Used by
ath9k_htc              92738  0
mac80211              506862  1 ath9k_htc
ath9k_common           14053  1 ath9k_htc
ath9k_hw              411239  2 ath9k_htc,ath9k_common
ath                    24067  3 ath9k_htc,ath9k_common,ath9k_hw
cfg80211              205774  3 ath9k_htc,mac80211,ath
nls_iso8859_1          12713  0
nls_cp437              16991  0
vfat                   17585  0
fat                    61512  1 vfat
usb_storage            49243  0
rfcomm                 47604  0
joydev                 17693  0
parport_pc             32866  0
ppdev                  17113  0
lp                     17799  0
parport                46562  3 parport_pc,ppdev,lp
snd_hda_codec_hdmi     32474  1
snd_hda_codec_realtek   224173  1
bnep                   18281  2
bluetooth             180153  10 rfcomm,bnep
binfmt_misc            17540  1
snd_hda_intel          33719  3
snd_hda_codec         127706  3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep              17764  1 snd_hda_codec
usbhid                 47238  0
hid                    99636  1 usbhid
i915                  477748  3
snd_pcm                97275  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi           13324  0
snd_rawmidi            30748  1 snd_seq_midi
snd_seq_midi_event     14899  1 snd_seq_midi
snd_seq                61929  2 snd_seq_midi,snd_seq_midi_event
fujitsu_laptop         18992  0
snd_timer              29990  2 snd_pcm,snd_seq
snd_seq_device         14540  3 snd_seq_midi,snd_rawmidi,snd_seq
mac_hid                13253  0
uvcvideo               72627  0
nouveau               775039  0
snd                    79041  16 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
videodev               98259  1 uvcvideo
v4l2_compat_ioctl32    17128  1 videodev
dm_multipath           23275  0
ttm                    76949  1 nouveau
drm_kms_helper         46978  2 i915,nouveau
psmouse                97485  0
rt3290sta            1182379  1
drm                   241971  6 i915,nouveau,ttm,drm_kms_helper
serio_raw              13211  0
soundcore              15091  1 snd
snd_page_alloc         18529  2 snd_hda_intel,snd_pcm
i2c_algo_bit           13423  2 i915,nouveau
mxm_wmi                13021  1 nouveau
mei                    41616  0
wmi                    19256  1 mxm_wmi
video                  19651  2 i915,nouveau
dm_raid45              78155  0
r8169                  62154  0
xor                    12894  1 dm_raid45
dm_mirror              22203  0
dm_region_hash         20961  1 dm_mirror
dm_log                 18564  3 dm_raid45,dm_mirror,dm_region_hash

dmesg | tail -n 40:
Quote
[ 3037.868451] ==> RTMPWlan 1, bPCIclkOff = 0, pAd->WlanFunCtrl.word = 0xff000020
[ 3037.868456] ==> RTMPWlan 1, bPCIclkOff = 0, WlanFunCtrl.word = 0xff000021
[ 3037.868747] <== RTMPWlan 1  bPCIclkOff = 0 pAd->WlanFunCtrl.word = 0xff000023
[ 3037.868765] PllCtrl:0x2695555
[ 3037.870111] RX DESC ffff880036c5f000  size = 2048
[ 3037.870533] RTMP_TimerListAdd: add timer obj ffffc90005d4bd60!
[ 3037.870539] RTMP_TimerListAdd: add timer obj ffffc90005d4bdd0!
[ 3037.870542] RTMP_TimerListAdd: add timer obj ffffc90005d4be40!
[ 3037.870546] RTMP_TimerListAdd: add timer obj ffffc90005d4bcf0!
[ 3037.870550] RTMP_TimerListAdd: add timer obj ffffc90005d4bba0!
[ 3037.870553] RTMP_TimerListAdd: add timer obj ffffc90005d4bc10!
[ 3037.870556] RTMP_TimerListAdd: add timer obj ffffc90005d15d20!
[ 3037.870559] RTMP_TimerListAdd: add timer obj ffffc90005d15d90!
[ 3037.870561] RTMP_TimerListAdd: add timer obj ffffc90005d15c38!
[ 3037.870564] RTMP_TimerListAdd: add timer obj ffffc90005d04b30!
[ 3037.870567] RTMP_TimerListAdd: add timer obj ffffc90005d04ba8!
[ 3037.870571] RTMP_TimerListAdd: add timer obj ffffc90005d15b58!
[ 3037.870575] RTMP_TimerListAdd: add timer obj ffffc90005d15e20!
[ 3037.872575] BBP_R105: BBPR105.field.EnableSIGRemodulation = 1, BBPR105.field.MLDFor2Stream = 0
[ 3037.873491] CfgSetCountryRegion():CountryRegion in eeprom was programmed
[ 3037.873724] Key1Str is Invalid key length(0) or Type(0)
[ 3037.873743] Key2Str is Invalid key length(0) or Type(0)
[ 3037.873763] Key3Str is Invalid key length(0) or Type(0)
[ 3037.873783] Key4Str is Invalid key length(0) or Type(0)
[ 3037.874153] 1. Phy Mode = 9
[ 3037.874155] 2. Phy Mode = 9
[ 3037.874163] NVM is Efuse and its size =1e[1e0-1fd]
[ 3037.875509] 3. Phy Mode = 9
[ 3037.875548] \x1b[mAntCfgInit: primary/secondary ant 0/1
[ 3037.875550] \x1b[mRTMPSetPhyMode: channel is out of range, use first channel=1
[ 3037.889974] MCS Set = ff 00 00 00 01
[ 3037.889982] <==== rt28xx_init, Status=0
[ 3037.890042] 0x1300 = 00064300
[ 3037.890044] RTMPrt3xSetPCIePowerLinkCtrl.===> 1e
[ 3090.818998] usb 3-4: USB disconnect, device number 9
[ 3126.032352] usb 3-4: new high-speed USB device number 10 using xhci_hcd
[ 3126.342829] usb 3-4: ath9k_htc: Transferred FW: htc_9271.fw, size: 51272
[ 3126.343019] xhci_hcd 0000:00:14.0: ERROR no room on ep ring
[ 3126.345956] usb 3-4: ath9k_htc: Unable to allocate URBs
[ 3126.346005] ath9k_htc: probe of 3-4:1.0 failed with error -22

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #12 on: April 28, 2013, 12:50:48 pm »
Can you try putting the tplink into a different USB port .. if it's currently in a USB hub, move it to a "proper" USB port.
then send the output from:
Code: [Select]
dmesg | tail -n 20
« Last Edit: April 28, 2013, 12:52:32 pm by Mark Greaves (PCNetSpec) »
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Offline jiaweihuo

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #13 on: April 28, 2013, 12:53:04 pm »
Quote
[ 4352.864403] usb 3-3: ath9k_htc: Unable to allocate URBs
[ 4352.864449] ath9k_htc: probe of 3-3:1.0 failed with error -22
[ 4365.643383] RT3290_AsicTxAlcGetAutoAgcOffset: Incorrect desired TSSI or current TSSI
[ 4377.625537] RT3290_AsicTxAlcGetAutoAgcOffset: Incorrect desired TSSI or current TSSI
[ 4388.168026] CacheVal-OnOff:0, bPCIclkOff:1, WlanFunCtrl:0xff000133
[ 4388.168035] ==> RTMPWlan 0, bPCIclkOff = 1, pAd->WlanFunCtrl.word = 0xff000123
[ 4388.168039] Set INT_MASK_CSR = 0
[ 4388.168045] ==> RTMPWlan 0, bPCIclkOff = 1, WlanFunCtrl.word = 0xff000120
[ 4388.168051] <== RTMPWlan 0  bPCIclkOff = 1 pAd->WlanFunCtrl.word = 0xff000120
[ 4388.175083] CacheVal-OnOff:0, bPCIclkOff:1, WlanFunCtrl:0xff000120
[ 4388.175093] ==> RTMPWlan 0, bPCIclkOff = 1, pAd->WlanFunCtrl.word = 0xff000120
[ 4388.175096] Set INT_MASK_CSR = 0
[ 4388.175128] ==> RTMPWlan 0, bPCIclkOff = 1, WlanFunCtrl.word = 0xff000120
[ 4388.175133] <== RTMPWlan 0  bPCIclkOff = 1 pAd->WlanFunCtrl.word = 0xff000120
[ 4400.037676] usb 3-3: USB disconnect, device number 14
[ 4404.449532] usb 3-3: new high-speed USB device number 15 using xhci_hcd
[ 4404.760211] usb 3-3: ath9k_htc: Transferred FW: htc_9271.fw, size: 51272
[ 4404.760380] xhci_hcd 0000:00:14.0: ERROR no room on ep ring
[ 4404.763285] usb 3-3: ath9k_htc: Unable to allocate URBs
[ 4404.763325] ath9k_htc: probe of 3-3:1.0 failed with error -22

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Re: TP-LINK TL-WN721N wireless adapter
« Reply #14 on: April 28, 2013, 01:05:48 pm »
OK, this appears to be a known bug (fixed in newer kernels) .. which Linux distro/version/architecture are you running ?

eg.
Ubuntu 12.04 32bit

and what's the output from:
Code: [Select]
uname -a
and
Code: [Select]
md5sum /lib/firmware/htc_9271.fw
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