Podpiąłem właśnie tego Archera T4U pod swojego laptopa, na którym mam zainstalowanego debiana i poniżej jest przedstawiona instalacja i konfiguracja tej karty wifi.
Póki co, w kernelu linuxa (3.16) nie ma odpowiednich sterowników do tej karty i trzeba je sobie skompilować ręcznie.
Kod sterownika można pobrać z githuba:
$ git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git
Cloning into 'rtl8812AU_8821AU_linux'...
remote: Counting objects: 402, done.
remote: Total 402 (delta 0), reused 0 (delta 0)
Receiving objects: 100% (402/402), 1.46 MiB | 392.00 KiB/s, done.
Resolving deltas: 100% (158/158), done.
Checking connectivity... done.
$ cd rtl8812AU_8821AU_linux/
$ make
make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/3.16-2-amd64/build M=/home/morfik/Desktop/debian_sources/rtl8812AU_8821AU_linux modules
make[1]: Entering directory '/usr/src/linux-headers-3.16-2-amd64'
Makefile:10: *** mixed implicit and normal rules: deprecated syntax
make[1]: Entering directory `/usr/src/linux-headers-3.16-2-amd64'
...
Building modules, stage 2.
MODPOST 1 modules
CC /home/morfik/Desktop/debian_sources/rtl8812AU_8821AU_linux/8812au.mod.o
LD [M] /home/morfik/Desktop/debian_sources/rtl8812AU_8821AU_linux/8812au.ko
make[1]: Leaving directory '/usr/src/linux-headers-3.16-2-amd64'
Moduł się skompilował, logujemy się na roota i instalujemy go:
# make install
install -p -m 644 8812au.ko /lib/modules/3.16-2-amd64/kernel/drivers/net/wireless/
/sbin/depmod -a 3.16-2-amd64
Podłączamy teraz kartę do portu USB i w logu już powinniśmy zauważyć, że karta została rozpoznana przez system:
Oct 20 15:32:42 morfikownia kernel: [ 2273.396616] usb 2-1.1: new high-speed USB device number 8 using ehci-pci
Oct 20 15:32:42 morfikownia kernel: [ 2273.489331] usb 2-1.1: New USB device found, idVendor=2357, idProduct=0101
Oct 20 15:32:42 morfikownia kernel: [ 2273.489339] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Oct 20 15:32:42 morfikownia kernel: [ 2273.489345] usb 2-1.1: Product: 802.11n NIC
Oct 20 15:32:42 morfikownia kernel: [ 2273.489349] usb 2-1.1: Manufacturer: Realtek
Oct 20 15:32:42 morfikownia kernel: [ 2273.489353] usb 2-1.1: SerialNumber: 123456
Oct 20 15:32:42 morfikownia mtp-probe: checking bus 2, device 8: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1"
Oct 20 15:32:42 morfikownia mtp-probe: bus: 2, device: 8 was not an MTP device
Oct 20 15:32:42 morfikownia kernel: [ 2273.548489] cfg80211: Calling CRDA to update world regulatory domain
Oct 20 15:32:42 morfikownia kernel: [ 2273.548502] cfg80211: Calling CRDA to update world regulatory domain
Oct 20 15:32:42 morfikownia kernel: [ 2273.635501] cfg80211: World regulatory domain updated:
Oct 20 15:32:42 morfikownia kernel: [ 2273.635506] cfg80211: DFS Master region: unset
Oct 20 15:32:42 morfikownia kernel: [ 2273.635508] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635511] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635513] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635515] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635517] cfg80211: (5170000 KHz - 5250000 KHz @ 160000 KHz), (N/A, 2000 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635519] cfg80211: (5250000 KHz - 5330000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635521] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635522] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635524] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.635542] cfg80211: Calling CRDA for country: PL
Oct 20 15:32:42 morfikownia kernel: [ 2273.642841] cfg80211: Regulatory domain changed to country: PL
Oct 20 15:32:42 morfikownia kernel: [ 2273.642846] cfg80211: DFS Master region: ETSI
Oct 20 15:32:42 morfikownia kernel: [ 2273.642848] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Oct 20 15:32:42 morfikownia kernel: [ 2273.642851] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.642853] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.642855] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz), (N/A, 2000 mBm), (0 s)
Oct 20 15:32:42 morfikownia kernel: [ 2273.642857] cfg80211: (5490000 KHz - 5710000 KHz @ 80000 KHz), (N/A, 2700 mBm), (0 s)
Oct 20 15:32:42 morfikownia kernel: [ 2273.642859] cfg80211: (57240000 KHz - 65880000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
Oct 20 15:32:42 morfikownia kernel: [ 2273.852409] usbcore: registered new interface driver rtl8812au
Powinien się także pojawić nowy interfejs sieciowy:
# iwconfig wlan2
wlan2 unassociated Nickname:"<WIFI@REALTEK>"
Mode:Auto Frequency=2.412 GHz Access Point: Not-Associated
Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Poniżej zaś jest lista rzeczy, które potrafi ogarnąć Archer T4U:
# iw list
Wiphy phy0
max # scan SSIDs: 9
max scan IEs length: 2304 bytes
Coverage class: 0 (up to 0m)
Supported Ciphers:
* WEP40 (00-0f-ac:1)
* WEP104 (00-0f-ac:5)
* TKIP (00-0f-ac:2)
* CCMP (00-0f-ac:4)
Available Antennas: TX 0 RX 0
Supported interface modes:
* IBSS
* managed
* AP
* monitor
* P2P-client
* P2P-GO
Band 1:
Bitrates (non-HT):
* 1.0 Mbps
* 2.0 Mbps
* 5.5 Mbps
* 11.0 Mbps
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (20.0 dBm)
* 2472 MHz [13] (20.0 dBm)
* 2484 MHz [14] (disabled)
Band 2:
Bitrates (non-HT):
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
Frequencies:
* 5170 MHz [34] (disabled)
* 5180 MHz [36] (20.0 dBm)
* 5190 MHz [38] (20.0 dBm)
* 5200 MHz [40] (20.0 dBm)
* 5210 MHz [42] (20.0 dBm)
* 5220 MHz [44] (20.0 dBm)
* 5230 MHz [46] (20.0 dBm)
* 5240 MHz [48] (20.0 dBm)
* 5260 MHz [52] (20.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5280 MHz [56] (20.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5300 MHz [60] (20.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5320 MHz [64] (20.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5500 MHz [100] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5520 MHz [104] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5540 MHz [108] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5560 MHz [112] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5580 MHz [116] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5600 MHz [120] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5620 MHz [124] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5640 MHz [128] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5660 MHz [132] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5680 MHz [136] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5700 MHz [140] (27.0 dBm) (radar detection)
DFS state: usable (for 926 sec)
* 5745 MHz [149] (disabled)
* 5765 MHz [153] (disabled)
* 5785 MHz [157] (disabled)
* 5805 MHz [161] (disabled)
* 5825 MHz [165] (disabled)
* 5920 MHz [184] (disabled)
* 5940 MHz [188] (disabled)
* 5960 MHz [192] (disabled)
* 5980 MHz [196] (disabled)
* 6000 MHz [200] (disabled)
* 6020 MHz [204] (disabled)
* 6040 MHz [208] (disabled)
* 6060 MHz [212] (disabled)
* 6080 MHz [216] (disabled)
Supported commands:
* new_interface
* set_interface
* new_key
* start_ap
* new_station
* set_bss
* join_ibss
* set_pmksa
* del_pmksa
* flush_pmksa
* remain_on_channel
* frame
* set_channel
* connect
* disconnect
Supported TX frame types:
* IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
Supported RX frame types:
* IBSS: 0xd0
* managed: 0x40 0xd0
* AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* P2P-client: 0x40 0xd0
* P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
software interface modes (can always be added):
* monitor
interface combinations are not supported
Device supports scan flush.
Przydałoby się przetestować połączenie. Edytujemy konfigurację dla wpasupplicanta, u mnie jest ona dostępna w pliku /etc/wpa_supplicant/wpa_supplicant.conf i dodajemy do niej poniższy blok kodu:
network={
id_str="home_wifi"
priority=10
ssid="What Is Dead May Never Die"
# bssid=
psk=141fc2d91f1c6cdafad53312f19a26f3175aeaf2733a4044e731af6f0a1452f1
proto=RSN
key_mgmt=WPA-PSK
pairwise=CCMP
group=CCMP
auth_alg=OPEN
scan_ssid=0
disabled=0
}
Oczywiście, wartości powyższych parametrów trzeba dostosować odpowiednio wedle naszych potrzeb.
Konfigurujemy także sam interfejs sieciowy. W moim przypadku konfiguracja interfejsów odbywa się przez plik /etc/network/interfaces -- dodajemy tam poniższy blok :
auto wlan2
allow-hotplug wlan2
iface wlan2 inet dhcp
wpa-driver nl80211
wpa-debug-level -1
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
Podnosimy interfejs by przetestować ustawienia:
# ifup wlan2
Internet Systems Consortium DHCP Client 4.3.1
Copyright 2004-2014 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
Listening on LPF/wlan2/e8:de:27:1d:4c:a5
Sending on LPF/wlan2/e8:de:27:1d:4c:a5
Sending on Socket/fallback
DHCPDISCOVER on wlan2 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan2 to 255.255.255.255 port 67 interval 8
DHCPREQUEST on wlan2 to 255.255.255.255 port 67
DHCPOFFER from 192.168.0.1
DHCPACK from 192.168.0.1
bound to 192.168.0.101 -- renewal in 3478 seconds.
Adres został pobrany via DHCP.
Poniżej jeszcze speedtest:
morfik:~$ speedtest
Retrieving speedtest.net configuration...
Retrieving speedtest.net server list...
Testing from TK Telekom sp. z o.o. ...
Selecting best server based on latency...
Hosted by NETIA S.A. (Warsaw) [43.40 km]: 14.888 ms
Testing download speed........................................
Download: 14.62 Mbits/s
Testing upload speed..................................................
Upload: 0.97 Mbits/s
Także jeśli chodzi o moje łącze 15/1 Mbit , to z grubsza jest w porządku.
Jedyny problem jaki można zaobserwować, to skoki pingów:
$ ping wp.pl
PING wp.pl (212.77.100.101) 56(84) bytes of data.
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=1 ttl=247 time=19.2 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=2 ttl=247 time=18.3 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=3 ttl=247 time=19.9 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=4 ttl=247 time=19.4 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=5 ttl=247 time=19.2 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=6 ttl=247 time=15.5 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=7 ttl=247 time=15.4 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=8 ttl=247 time=125 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=9 ttl=247 time=148 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=10 ttl=247 time=170 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=11 ttl=247 time=192 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=12 ttl=247 time=113 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=13 ttl=247 time=136 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=14 ttl=247 time=158 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=15 ttl=247 time=181 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=16 ttl=247 time=204 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=17 ttl=247 time=125 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=18 ttl=247 time=147 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=19 ttl=247 time=170 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=20 ttl=247 time=240 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=21 ttl=247 time=19.9 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=22 ttl=247 time=15.2 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=23 ttl=247 time=16.3 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=24 ttl=247 time=181 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=25 ttl=247 time=204 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=26 ttl=247 time=124 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=27 ttl=247 time=147 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=28 ttl=247 time=170 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=29 ttl=247 time=24.3 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=30 ttl=247 time=17.6 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=31 ttl=247 time=23.6 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=32 ttl=247 time=18.9 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=33 ttl=247 time=18.3 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=34 ttl=247 time=18.0 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=35 ttl=247 time=20.0 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=36 ttl=247 time=146 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=37 ttl=247 time=170 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=38 ttl=247 time=192 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=39 ttl=247 time=113 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=40 ttl=247 time=19.5 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=41 ttl=247 time=38.5 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=42 ttl=247 time=20.1 ms
64 bytes from www.wp.pl (212.77.100.101): icmp_seq=43 ttl=247 time=20.4 ms
^C
wp.pl ping statistics
43 packets transmitted, 43 received, 0% packet loss, time 42054ms
rtt min/avg/max/mdev = 15.265/92.707/240.656/74.842 ms
Dzieje się to zarówno na paśmie 2.4GHz jak i 5GHz i nie mam pojęcia czym to może być spowodowane. Być może jeszcze zbyt wcześnie dla linuxiarzy by mogli swobodnie używać Archera T4U .
Poniżej jeszcze kilka fotek:
Podłączenie do sieci wifi 5GHz:
Oraz do sieci wifi 2.4 GHz:
Z tym, że zarówno jakość połączenia jak i poziom sygnału nie zmieniają się, także najwyraźniej są jakieś problemy z tą kartą pod linuxami.
