Because of the limited internal WiFi capabilities of my RPI V.3 I decided to attach the adapter mentioned above. I blacklisted the internal WiFi adapter:
cat /etc/modprobe.d/8812au.conf
blacklist brcmfmac
options 8812au rtw_power_mgnt=0 rtw_enusbss=0
Seems that the adapter is working:
[ 8.966555] snd-hifiberry-dac soc:sound: pcm5102a-hifi <-> 3f203000.i2s mapping ok
[ 9.625329] 8812au: loading out-of-tree module taints kernel.
[ 9.637598] RTL871X: module init start
[ 9.637605] RTL871X: rtl8812au v4.3.20_16317.20160108
[ 9.637608] RTL871X: build time: Jul 6 2017 17:12:19
[ 9.730656] RTL871X: rtw_ndev_init(wlan0) if1 mac_addr=74:da:38:c6:e7:8a
[ 9.731596] usbcore: registered new interface driver rtl8812au
[ 9.731602] RTL871X: module init ret=0
[ 9.731831] systemd-journald[191]: Received request to flush runtime journal from PID 1
[ 10.999660] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 11.030095] random: crng init done
[ 11.594379] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 11.685832] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[ 13.281557] RTL871X: nolinked power save enter
[ 16.584320] RTL871X: nolinked power save leave
[ 19.981686] RTL871X: nolinked power save enter
[ 20.343216] RTL871X: nolinked power save leave
[ 20.343394] RTL871X: rtw_set_802_11_connect(wlan0) fw_state=0x00000008
[ 20.389985] RTL871X: start auth
[ 20.394909] RTL871X: auth success, start assoc
[ 20.400571] RTL871X: rtw_cfg80211_indicate_connect(wlan0) BSS not found !!
[ 20.400583] RTL871X: assoc success
[ 20.402288] RTL871X: recv eapol packet
[ 20.451755] RTL871X: send eapol packet
[ 20.457637] RTL871X: recv eapol packet
[ 20.464945] RTL871X: send eapol packet
[ 20.468109] RTL871X: set pairwise key camid:4, addr:c0:25:06:e3:bf:b6, kid:0, type:AES
[ 20.474919] RTL871X: set group key camid:5, addr:c0:25:06:e3:bf:b6, kid:2, type:TKIP
[ 516.033806] RTL871X: recv eapol packet
[ 516.043504] RTL871X: set group key camid:6, addr:c0:25:06:e3:bf:b6, kid:1, type:TKIP
[ 516.046011] RTL871X: send eapol packet
iwconfig
wlan0 IEEE 802.11bgn ESSID:"xxxxxxxxx" Nickname:"<WIFI@REALTEK>"
Mode:Managed Frequency:2.437 GHz Access Point: C0:25:06:E3:BF:B6
Bit Rate:72.2 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Encryption key:****-****-****-****-****-****-****-**** Security mode:open
Power Management:off
Link Quality=97/100 Signal level=100/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
iwlist wlan0 channel
wlan0 21 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
Channel 12 : 2.467 GHz
Channel 13 : 2.472 GHz
Channel 36 : 5.18 GHz
Channel 40 : 5.2 GHz
Channel 44 : 5.22 GHz
Channel 48 : 5.24 GHz
Channel 52 : 5.26 GHz
Channel 56 : 5.28 GHz
Channel 60 : 5.3 GHz
Channel 64 : 5.32 GHz
Current Frequency:2.437 GHz (Channel 6)
My question is how to connect the RPiDAC to the 5GHz network. I am having a Fritz!Box 6490. Actual network speed is 72Mb/s (…according to the Volume WebGUI network status) which is great compared to internal Wifi but could be better I think.