Atheros-Communications-Inc.

Atheros Communications Inc TP-Link TL-WN821N v3.1 [Atheros AR9002]

Tehnoetic TET-N300 / Tehnoetic N300 Wireless USB Adapter for GNU/Linux-libre

TP-LINK 300Mbps Wireless N USB Adapter

Atheros Communications, Inc. TP-Link TL-WN821N v3 802.11n [Atheros AR7010+AR9287]

0cf3:7015

2010

USB

trisquel_6_0 , trisquel_7_0

Linux 3.2.0-45-generic, 3.13.0-88-lowlatency

yes

ath9k_htc

If you search this device as "TP-Link TL-WN821N", validate that you're getting version [a]https://h-node.org/wifi/view/en/253/Atheros-Communications-Inc-TP-Link-TL-WN821N-v2--Atheros-AR9001U--2-NG-|2[/a] or 3. [b]Newer revisions [a]https://h-node.org/wifi/view/en/1133/Realtek-Semiconductor-Corp--RTL8192CU-802-11n-WLAN-Adapter/1/1/undef/undef/undef/undef/wifi-works/undef|don't work[/a][/b].

[p]To use Wi-Fi with [a]https://tehnoetic.com/tet-n300|Tehnoetic TET-N300 Wireless USB Adapter for GNU/Linux-libre[/a] in Trisquel, I installed the free firmware from the official Trisquel package open-ath9k-htc-firmware. It is included in both [a]http://packages.trisquel.info/belenos/kernel/open-ath9k-htc-firmware | Trisquel 7[/a] and [a]http://packages.trisquel.info/en/source/toutatis-updates/open-ath9k-htc-firmware | Trisquel 6 updates[/a] repositories.[/p]
[code]
sudo apt install open-ath9k-htc-firmware
[/code]

or, if not running Trisquel and your free deb-based distribution doesn't package the free firmware, download the Trisquel package from a mirror and install the Trisquel package:

[code]
sudo dpkg -i open-ath9k-htc-firmware.deb
[/code]

or, for other free distributions that don't package the free firmware, unpack the deb archive and copy the free firmware to the canonical location:
[code]
sudo cp htc_7010.fw /lib/firmware # check if this path exists
[/code]

or
[code]
sudo cp htc_7010.fw /firmware # check if this path exists
[/code]

[p]output of lsusb:[/p]

[code]
$ sudo lsusb -vd 0cf3:7015

Bus 002 Device 003: ID 0cf3:7015 Atheros Communications, Inc. TP-Link TL-WN821N v3 / TL-WN822N v2 802.11n [Atheros AR7010+AR9287]
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 255 Vendor Specific Subclass
bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
idVendor 0x0cf3 Atheros Communications, Inc.
idProduct 0x7015 TP-Link TL-WN821N v3 / TL-WN822N v2 802.11n [Atheros AR7010+AR9287]
bcdDevice 2.02
iManufacturer 16 ATHEROS
iProduct 32 UB95
iSerial 48 12345
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 60
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 6
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x05 EP 5 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x06 EP 6 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 255 Vendor Specific Subclass
bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
[/code]