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Astinus

Member

Registered: 2020-06-23

Posts: 1

Can't get WiFi USB adapter working

I have been trying to get my new unbranded USB WiFi adapter working. It is an USB 3.0, Dual Band(2.4/5.8G) device. lsusb lists the device but ip link doesn't show it. My old TP-LINK adapter works and I listed its dmesg output for comparison.

I installed  rtl88xxau-aircrack-dkms-git package because RTL8811/RTL8812 is written on the driver CD that came with the adapter. This image is the exact copy of the image on the driver CD. Package installation calls the command:

dkms install --no-depmod -m rtl88xxau -v r1068.df2b8df -k 5.4.47-1-lts

However modprobe gives error:

[alp@archlinux ~]$ modprobe rtl88xxau
modprobe: FATAL: Module rtl88xxau not found in directory /lib/modules/5.4.47-1-lts

I couldn't find any .ro files installed by the package. I don't know how it is going to help without installing any kernel modules. I took the following command outputs after installing the package.

lsusb output(bus 7 device 3 is the adapter):

[alp@archlinux ~]$ lsusb
Bus 004 Device 002: ID 8087:8002 Intel Corp. 
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 009 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 010 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 003: ID 0bda:b812 Realtek Semiconductor Corp. 802.11ac NIC
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:800a Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 003: ID 04d9:8008 Holtek Semiconductor, Inc. USB-HID Keyboard
Bus 002 Device 002: ID 04d9:fc30 Holtek Semiconductor, Inc. USB Gaming Mouse
Bus 002 Device 004: ID 0cf3:e300 Qualcomm Atheros Communications 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

dmesg output of the new adapter after plugging and unplugging usb cable:

[   47.314715] usb 7-2: USB disconnect, device number 2
[   81.602227] usb 7-2: new high-speed USB device number 3 using xhci_hcd
[   81.782646] usb 7-2: New USB device found, idVendor=0bda, idProduct=b812, bcdDevice= 2.10
[   81.782650] usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[   81.782652] usb 7-2: Product: 802.11ac NIC
[   81.782654] usb 7-2: Manufacturer: Realtek
[   81.782656] usb 7-2: SerialNumber: 123456

dmesg output of the working old TP-LINK adapter:

[  200.632230] usb 2-10: new high-speed USB device number 5 using xhci_hcd
[  206.122235] usb 2-10: device descriptor read/64, error -110
[  206.439395] usb 2-10: New USB device found, idVendor=148f, idProduct=3070, bcdDevice= 1.01
[  206.439399] usb 2-10: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  206.439402] usb 2-10: Product: 802.11 n WLAN
[  206.439403] usb 2-10: Manufacturer: Ralink
[  206.439405] usb 2-10: SerialNumber: 1.0
[  206.612492] usb 2-10: reset high-speed USB device number 5 using xhci_hcd
[  206.802848] ieee80211 phy1: rt2x00_set_rt: Info - RT chipset 3070, rev 0201 detected
[  206.813614] ieee80211 phy1: rt2x00_set_rf: Info - RF chipset 0005 detected
[  206.813744] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[  206.814481] usbcore: registered new interface driver rt2800usb
[  206.822611] rt2800usb 2-10:1.0 wlp0s20u10: renamed from wlan0
[  206.826474] kauditd_printk_skb: 2 callbacks suppressed
[  206.826477] audit: type=1130 audit(1592915331.603:35): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'