300Mbps High Gain Wireless USB Adapter TL-WN822N on Ubuntu 14.10

**torajeshr** · November 25th, 2014

I'm using TP-LINK wireless adapter model # TL-WN822N on 14.10. During the Live Media Boot, my wife Access Point was automatically detected by the Wireless Adapter all the upgrades went through just fine. After booting up to the installed 14.10, I'm able to access apt-get repositories, thunderbird e-mail client, software update etc. without an issue. The Internet access is seamless in all such situations. But when I pull up a browser, both firefox and Chromium, try to access a webpage, the Internet stops working immediately. A disconnect and connect lets me access Internet for all purposes like repository updates, e-mail client etc., but the moment I pull up a browser again and try to access a URL, internet stops working!!

I've tried changing the proxy setting on the browser to 'No Proxy', but to no avail. My Netgear router IP is 10.0.0.1. When I connect to the WIFI AP by using the TL-WN822N adapter, it gets an IP, say 10.0.0.5, I'm able to ping 10.0.0.1 as well as use the other utilities like nslookup, traceroute etc. But immediately after I try accessing the Internet using a browser, none of above utilities work and I lose ping access to 10.0.0.1. That leads me to believe that it cannot be a configuration issue with my router.

Request help.

Rajesh

**praseodym** · November 25th, 2014

Please open a terminal with CTRL+ALT+T and show the outputs of these commands:

Code:

lsusb
lsmod
iwconfig
rfkill list
iwlist chan
sudo iwlist scan

**torajeshr** · November 28th, 2014

Hello,

Thank you for attending to this. As advised, please find the output of all the commands mentioned in the post:

--snip--

Welcome to Ubuntu 14.10 (GNU/Linux 3.16.0-25-generic x86_64)
root@home313:/mystorage/rajeshr# lsusb
Bus 002 Device 002: ID 8087:8001 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8009 Intel Corp.
Bus 001 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 003 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 003 Device 002: ID 0bda:8178 Realtek Semiconductor Corp. RTL8192CU 802.11n WLAN Adapter
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root@home313:/mystorage/rajeshr# lsmod
Module Size Used by
arc4 12608 2
rtl8192cu 67670 0
rtl_usb 18448 1 rtl8192cu
rtlwifi 64237 2 rtl_usb,rtl8192cu
rtl8192c_common 53170 1 rtl8192cu
mac80211 660592 3 rtl_usb,rtlwifi,rtl8192cu
cfg80211 510218 2 mac80211,rtlwifi
joydev 17344 0
hid_logitech_dj 18469 0
usbhid 52574 0
rfcomm 69509 0
bnep 19543 2
bluetooth 446190 10 bnep,rfcomm
6lowpan_iphc 18702 1 bluetooth
binfmt_misc 17468 1
snd_hda_codec_realtek 76887 1
snd_hda_codec_generic 68914 1 snd_hda_codec_realtek
snd_hda_codec_hdmi 47547 1
eeepc_wmi 13151 0
asus_wmi 24094 1 eeepc_wmi
sparse_keymap 13948 1 asus_wmi
mxm_wmi 13021 0
intel_rapl 18783 0
x86_pkg_temp_thermal 14205 0
intel_powerclamp 18786 0
nls_iso8859_1 12713 1
coretemp 13441 0
kvm 459835 0
crct10dif_pclmul 14307 0
crc32_pclmul 13133 0
ghash_clmulni_intel 13230 0
aesni_intel 152552 0
aes_x86_64 17131 1 aesni_intel
lrw 13287 1 aesni_intel
gf128mul 14951 1 lrw
glue_helper 13944 1 aesni_intel
ablk_helper 13597 1 aesni_intel
cryptd 20360 3 ghash_clmulni_intel,aesni_intel,ablk_helper
snd_soc_rt5640 93042 0
snd_soc_rl6231 13037 1 snd_soc_rt5640
snd_soc_core 200108 1 snd_soc_rt5640
snd_hda_intel 30379 5
serio_raw 13434 0
snd_hda_controller 35152 1 snd_hda_intel
snd_hda_codec 139675 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_c odec_generic,snd_hda_intel,snd_hda_controller
snd_compress 19200 1 snd_soc_core
snd_hwdep 17698 1 snd_hda_codec
snd_pcm_dmaengine 15172 1 snd_soc_core
i915 917658 5
snd_pcm 104102 7 snd_soc_rt5640,snd_soc_core,snd_hda_codec_hdmi,snd _hda_codec,snd_hda_intel,snd_hda_controller,snd_pc m_dmaengine
drm_kms_helper 61627 1 i915
drm 310919 4 i915,drm_kms_helper
mei_me 19742 0
mei 87931 1 mei_me
shpchp 37040 0
i2c_algo_bit 13406 1 i915
snd_seq_midi 13564 0
snd_seq_midi_event 14899 1 snd_seq_midi
snd_rawmidi 30876 1 snd_seq_midi
snd_seq 67224 2 snd_seq_midi_event,snd_seq_midi
tpm_infineon 17131 0
video 20128 2 i915,asus_wmi
snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi
dw_dmac 12835 0
snd_timer 29513 2 snd_pcm,snd_seq
wmi 19193 2 mxm_wmi,asus_wmi
snd_soc_sst_acpi 13007 0
parport_pc 32741 0
snd 87611 23 snd_hda_codec_realtek,snd_soc_core,snd_hwdep,snd_t imer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmid i,snd_hda_codec_generic,snd_hda_codec,snd_hda_inte l,snd_seq_device,snd_compress
i2c_hid 18719 0
hid 110426 4 i2c_hid,usbhid,hid_logitech_dj
soundcore 15052 2 snd,snd_hda_codec
8250_dw 13551 0
ppdev 17671 0
i2c_designware_platform 12979 0
i2c_designware_core 14768 1 i2c_designware_platform
dw_dmac_core 24298 1 dw_dmac
spi_pxa2xx_platform 23079 0
lp 17759 0
acpi_pad 17942 0
mac_hid 13227 0
parport 42299 3 lp,ppdev,parport_pc
psmouse 106548 0
ahci 34062 4
r8169 71471 0
libahci 32424 1 ahci
mii 13934 1 r8169
sdhci_acpi 13351 0
sdhci 43448 1 sdhci_acpi
root@home313:/mystorage/rajeshr# iwconfig
eth0 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"RAJR_IN"
Mode:Managed Frequency:2.462 GHz Access Point: 20:4E:7F:15:D0:9A
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=69/70 Signal level=-41 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

lo no wireless extensions.

root@home313:/mystorage/rajeshr# rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
root@home313:/mystorage/rajeshr# iwlist chan
eth0 no frequency information.

wlan0 11 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Current Frequency:2.462 GHz (Channel 11)

lo no frequency information.

root@home313:/mystorage/rajeshr# iwlist scan
eth0 Interface doesn't support scanning.

wlan0 Scan completed :
Cell 01 - Address: 20:4E:7F:15:D0:9A
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=54/70 Signal level=-56 dBm
Encryption key:off
ESSID:"RAJR_IN"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=00000047890fbf10
Extra: Last beacon: 4ms ago
IE: Unknown: 000752414A525F494E
IE: Unknown: 010882840B162430486C
IE: Unknown: 03010B
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: Unknown: 32040C121860
IE: Unknown: 2D1A6C181BFF00000000000000000000000000000000000000 000000
IE: Unknown: 3D160B081500000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F0101
IE: Unknown: DD7F0050F204104A00011010440001021041000100103B0001 0310470010E6141C5DDE255811367BE3CF7A0DE51E1021000D 4E4554474541522C20496E632E102300095747523631347631 30102400095747523631347631301042000538333235381054 000800060050F2040001101100095747523631347631301008 00020084
IE: Unknown: DD090010180203F0050000
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F 00
IE: Unknown: DD1E00904C336C181BFF000000000000000000000000000000 00000000000000
IE: Unknown: DD1A00904C340B081500000000000000000000000000000000 000000
Cell 02 - Address: AC:F1:DF:E6:F9:AF
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=22/70 Signal level=-88 dBm
Encryption key:on
ESSID:"Peace"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000003a2738617b
Extra: Last beacon: 4ms ago
IE: Unknown: 00055065616365
IE: Unknown: 010882848B962430486C
IE: Unknown: 030101
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: Unknown: 32040C121860
IE: Unknown: 2D1A6C181BFF00000000000000000000000000000000000000 000000
IE: Unknown: 3D1601001300000000000000000000000000000000000000
IE: Unknown: DD090010180201F0040000
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F 00
Cell 03 - Address: CC:B2:55:2E:52:99
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=12/70 Signal level=-98 dBm
Encryption key:on
ESSID:"Ola"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000008cf69f0325
Extra: Last beacon: 1708ms ago
IE: Unknown: 00034F6C61
IE: Unknown: 010882848B962430486C
IE: Unknown: 030101
IE: Unknown: 050400010000
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1AFE181BFFFF000001000000000000000000000000000000 000000
IE: Unknown: 3D1601051600000000000000000000000000000000000000
IE: Unknown: DD090010180203F0040000
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F 00
Cell 04 - Address: C8:BE:19:76:B8:C4
Channel:2
Frequency:2.417 GHz (Channel 2)
Quality=12/70 Signal level=-98 dBm
Encryption key:on
ESSID:"Tismo"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=00000042efa75fe5
Extra: Last beacon: 4ms ago
IE: Unknown: 00055469736D6F
IE: Unknown: 010882848B962430486C
IE: Unknown: 030102
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000 000000
IE: Unknown: 3D1602000000000000000000000000000000000000000000
IE: Unknown: DD7B0050F204104A00011010440001011041000100103B0001 03104700106BC590C97765E4ACB36E5D0C5158F66310210008 42726F6164636F6D1023000842726F6164636F6D1024000631 323334353610420004313233341054000800060050F2040001 1011000A42726F6164636F6D4150100800020088103C000101
IE: Unknown: DD090010180200F0040000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F 00
Cell 05 - Address: 74:44:01:35:5A:FC
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=48/70 Signal level=-62 dBm
Encryption key:on
ESSID:"Tismo 6"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000001732a6cb
Extra: Last beacon: 4ms ago
IE: Unknown: 00075469736D6F2036
IE: Unknown: 010882840B162430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: DD7F0050F204104A00011010440001021041000100103B0001 03104700106897A667F904F10268566BBF5FCC502F1021000D 4E4554474541522C20496E632E102300095747523631347631 30102400095747523631347631301042000538333235381054 000800060050F2040001101100095747523631347631301008 00020084
IE: Unknown: DD090010180200F0050000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F 00
Cell 06 - Address: 76:44:01:35:5A:FD
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=48/70 Signal level=-62 dBm
Encryption key:on
ESSID:"TismoGuest"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000001732b22b
Extra: Last beacon: 4ms ago
IE: Unknown: 000A5469736D6F4775657374
IE: Unknown: 010882840B162430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: DD090010180200F0050000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F 00
Cell 07 - Address: C4:A8:1D:8D:D3:24
Channel:8
Frequency:2.447 GHz (Channel 8)
Quality=36/70 Signal level=-74 dBm
Encryption key:on
ESSID:"kelshikar"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000044cfd217e
Extra: Last beacon: 692ms ago
IE: Unknown: 00096B656C7368696B6172
IE: Unknown: 010882848B960C121824
IE: Unknown: 030108
IE: Unknown: 050400010000
IE: Unknown: 2A0104
IE: Unknown: 32043048606C
IE: Unknown: 2D1A6F181FFFFF000000000000000000000000000000000000 000000
IE: Unknown: 3D1608000000000000000000000000000000000000000000
IE: Unknown: 4A0E14000A00B400C800140005001900
IE: Unknown: 7F0101
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
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F 00
IE: Unknown: DD1E00904C336F181FFFFF0000000000000000000000000000 00000000000000
IE: Unknown: DD1A00904C3408000000000000000000000000000000000000 000000
IE: Unknown: DD0600E04C020160
IE: Unknown: DD1D0050F204104A0001101044000102103C00010310490006 00372A000120
Cell 08 - Address: 00:1F:33:BB:46:54
Channel:7
Frequency:2.442 GHz (Channel 7)
Quality=12/70 Signal level=-98 dBm
Encryption key:on
ESSID:"Tismo"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=00000252bbb0ba22

lo Interface doesn't support scanning.

--snip--

Kindly let me know if any other information is required around the same.

Thank you,

Rajesh

**praseodym** · November 28th, 2014

Change the driver via:

Code:

sudo apt-get install --reinstall build-essential dkms git
git clone https://github.com/pvaret/rtl8192cu-fixes.git
sudo dkms add ./rtl8192cu-fixes
sudo dkms install 8192cu/1.9
echo "blacklist rtl8192cu" | sudo tee -a /etc/modprobe.d/blacklist.conf

Reboot. I strongly recommend encrypting the network with WPA2-AES (CCMP), you are online unencrypted!

Code:

Cell 01 - Address: 20:4E:7F:15:D0:9A
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=54/70 Signal level=-56 dBm
Encryption key:off

**torajeshr** · November 29th, 2014

Hello,

At the outset, thank you for the fast response. It all worked like a charm. Now I'm able to browse as well. Thank you again!

About the Encryption part of network, I've set the Access Control List on my router to the devices that I own. Do I need to encrypt it as no one else can join the network?

Since the problem with my wifi is solved, marking this thread as solved.

Gratefully yours,

Rajesh

**praseodym** · November 30th, 2014

MAC addresses can be cloned (e.g. from the outputs above!!!). So, encryption is always necessary

**Gabriel_Pinho** · March 17th, 2015

Originally Posted by praseodym

Change the driver via:

Code:

sudo apt-get install --reinstall build-essential dkms git
git clone https://github.com/pvaret/rtl8192cu-fixes.git
sudo dkms add ./rtl8192cu-fixes
sudo dkms install 8192cu/1.9
echo "blacklist rtl8192cu" | sudo tee -a /etc/modprobe.d/blacklist.conf

Reboot. I strongly recommend encrypting the network with WPA2-AES (CCMP), you are online unencrypted!

I had exactly same problem. Same wifi adapter and same ubuntu version. And it's solve my problem too.

Thanks a lot.