WifI Drivers Will Not Work. (Archer TP-link T2U Plus)

Been having issues trying to get this adapter working in arch. I have installed both rtl88xxau-aircrack-dkms-git r1298.b44d288-1 and linux66-headers 6.6.34-1. The adapter shows up when I click the wifi icon on my XFCE panel, but “Available Networks” is greyed out. I tried connecting manually, but it tells me "profile is not compatible with device (mismatching interface name).

$ lspci -k
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 07)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: skl_uncore
	Kernel modules: ie31200_edac
00:01.0 PCI bridge: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) (rev 07)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: pcieport
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
00:14.0 USB controller: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci
00:14.2 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Thermal Subsystem (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: intel_pch_thermal
	Kernel modules: intel_pch_thermal
00:15.0 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Serial IO I2C Controller #0 (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: intel-lpss
	Kernel modules: intel_lpss_pci
00:15.1 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Serial IO I2C Controller #1 (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: intel-lpss
	Kernel modules: intel_lpss_pci
00:16.0 Communication controller: Intel Corporation 100 Series/C230 Series Chipset Family MEI Controller #1 (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: mei_me
	Kernel modules: mei_me
00:17.0 SATA controller: Intel Corporation Q170/Q150/B150/H170/H110/Z170/CM236 Chipset SATA Controller [AHCI Mode] (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: ahci
00:1c.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #1 (rev f1)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: pcieport
00:1e.0 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Serial IO UART #0 (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: intel-lpss
	Kernel modules: intel_lpss_pci
00:1f.0 ISA bridge: Intel Corporation Z170 Chipset LPC/eSPI Controller (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
00:1f.2 Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Management Controller (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
00:1f.3 Audio device: Intel Corporation 100 Series/C230 Series Chipset Family HD Audio Controller (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device f998
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel, snd_soc_avs
00:1f.4 SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: i801_smbus
	Kernel modules: i2c_i801
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V (rev 31)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: e1000e
	Kernel modules: e1000e
01:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] (rev a1)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 8c94
	Kernel driver in use: nvidia
	Kernel modules: nouveau, nvidia_drm, nvidia
01:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller (rev a1)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 8c94
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel
02:00.0 USB controller: ASMedia Technology Inc. ASM1142 USB 3.1 Host Controller
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7998
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci

$ inxi -N
Network:
  Device-1: Intel Ethernet I219-V driver: e1000e
  Device-2: Realtek RTL8192EU 802.11b/g/n WLAN Adapter driver: rtl8xxxu
    type: USB
  Device-3: TP-Link Archer T2U PLUS [RTL8821AU] driver: rtl88XXau type: USB

Don’t be stingy with information:

inxi -Fazy

(includes more network device related info than what you gave)

It is an USB device - lspci doesn’t help much.

$ inxi -Fazy
System:
  Kernel: 6.6.34-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.1.1
    clocksource: tsc avail: hpet,acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.6-x86_64
    root=UUID=03211cfd-5af7-4e52-9dd8-d845bbc7374f rw quiet
    cryptdevice=UUID=a4d90a07-8edf-4bf8-8c71-be4520e097ce:luks-a4d90a07-8edf-4bf8-8c71-be4520e097ce
    root=/dev/mapper/luks-a4d90a07-8edf-4bf8-8c71-be4520e097ce splash
    apparmor=1 security=apparmor udev.log_priority=3
  Desktop: Xfce v: 4.18.1 tk: Gtk v: 3.24.36 wm: xfwm4 v: 4.18.0
    with: xfce4-panel tools: xfce4-screensaver vt: 7 dm: LightDM v: 1.32.0
    Distro: Manjaro base: Arch Linux
Machine:
  Type: Desktop Mobo: MSI model: Z170A SLI PLUS (MS-7998) v: 1.0
    serial: <superuser required> uuid: <superuser required>
    UEFI: American Megatrends v: 1.70 date: 07/27/2016
CPU:
  Info: model: Intel Core i5-6600K bits: 64 type: MCP arch: Skylake-S
    gen: core 6 level: v3 note: check built: 2015 process: Intel 14nm family: 6
    model-id: 0x5E (94) stepping: 3 microcode: 0xF0
  Topology: cpus: 1x cores: 4 smt: <unsupported> cache: L1: 256 KiB
    desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB L3: 6 MiB
    desc: 1x6 MiB
  Speed (MHz): avg: 800 min/max: 800/3900 scaling: driver: intel_pstate
    governor: powersave cores: 1: 800 2: 800 3: 800 4: 800 bogomips: 28009
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: gather_data_sampling status: Vulnerable: No microcode
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    disabled
  Type: mds mitigation: Clear CPU buffers; SMT disabled
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT disabled
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed mitigation: IBRS
  Type: spec_rstack_overflow status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: IBRS; IBPB: conditional; STIBP: disabled; RSB
    filling; PBRSB-eIBRS: Not affected; BHI: Not affected
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort mitigation: TSX disabled
Graphics:
  Device-1: NVIDIA GP106 [GeForce GTX 1060 6GB] vendor: Micro-Star MSI
    driver: nvidia v: 550.90.07 alternate: nouveau,nvidia_drm non-free: 545.xx+
    status: current (as of 2024-06; EOL~2026-12-xx) arch: Pascal code: GP10x
    process: TSMC 16nm built: 2016-2021 pcie: gen: 3 speed: 8 GT/s lanes: 16
    ports: active: none off: HDMI-A-1 empty: DP-1,DVI-D-1 bus-ID: 01:00.0
    chip-ID: 10de:1c03 class-ID: 0300
  Display: x11 server: X.org v: 1.21.1.13 compositor: xfwm4 v: 4.18.0 driver:
    X: loaded: nvidia gpu: nvidia,nvidia-nvswitch display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-size: <missing: xdpyinfo>
  Monitor-1: HDMI-0 res: 1920x1080 hz: 60 dpi: 96
    size: 509x286mm (20.04x11.26") diag: 584mm (22.99") modes: N/A
  API: EGL v: 1.5 hw: drv: nvidia platforms: device: 0 drv: nvidia device: 2
    drv: swrast gbm: drv: kms_swrast surfaceless: drv: nvidia x11: drv: nvidia
    inactive: wayland,device-1
  API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: nvidia mesa v: 550.90.07
    glx-v: 1.4 direct-render: yes renderer: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2
    memory: 5.86 GiB
Audio:
  Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: Micro-Star MSI
    driver: snd_hda_intel v: kernel alternate: snd_soc_avs bus-ID: 00:1f.3
    chip-ID: 8086:a170 class-ID: 0403
  Device-2: NVIDIA GP106 High Definition Audio vendor: Micro-Star MSI
    driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16
    bus-ID: 01:00.1 chip-ID: 10de:10f1 class-ID: 0403
  API: ALSA v: k6.6.34-1-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.0.7 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Intel Ethernet I219-V vendor: Micro-Star MSI driver: e1000e
    v: kernel port: N/A bus-ID: 00:1f.6 chip-ID: 8086:15b8 class-ID: 0200
  IF: enp0s31f6 state: down mac: <filter>
  Device-2: Realtek RTL8192EU 802.11b/g/n WLAN Adapter driver: rtl8xxxu
    type: USB rev: 2.1 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-2:3
    chip-ID: 0bda:818b class-ID: 0000 serial: <filter>
  IF: wlp0s20f0u2 state: up mac: <filter>
  Device-3: TP-Link Archer T2U PLUS [RTL8821AU] driver: rtl88XXau type: USB
    rev: 2.1 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-3:4 chip-ID: 2357:0120
    class-ID: 0000 serial: <filter>
  IF: wlp0s20f0u3 state: dormant mac: <filter>
  Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
Bluetooth:
  Device-1: ASUSTek ASUS USB-BT500 driver: btusb v: 0.8 type: USB rev: 1.1
    speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-4:5 chip-ID: 0b05:190e
    class-ID: e001 serial: <filter>
  Report: btmgmt ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 5.1
    lmp-v: 10 status: discoverable: no pairing: no class-ID: 6c0104
Drives:
  Local Storage: total: 2.05 TiB used: 104.26 GiB (5.0%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/sda maj-min: 8:0 vendor: Toshiba model: DT01ACA200
    size: 1.82 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: HDD rpm: 7200 serial: <filter> fw-rev: ABB0 scheme: GPT
  ID-2: /dev/sdb maj-min: 8:16 vendor: Kingfast model: N/A size: 238.47 GiB
    block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s tech: SSD
    serial: <filter> fw-rev: P1B3 scheme: GPT
Partition:
  ID-1: / raw-size: 931.51 GiB size: 915.81 GiB (98.31%)
    used: 104.24 GiB (11.4%) fs: ext4 dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-a4d90a07-8edf-4bf8-8c71-be4520e097ce
  ID-2: /boot/efi raw-size: 100 MiB size: 96 MiB (96.00%)
    used: 25.7 MiB (26.8%) fs: vfat dev: /dev/sdb1 maj-min: 8:17
Swap:
  Alert: No swap data was found.
Sensors:
  System Temperatures: cpu: 33.0 C pch: 39.5 C mobo: N/A gpu: nvidia temp: 41 C
  Fan Speeds (rpm): N/A gpu: nvidia fan: 38%
Info:
  Memory: total: 16 GiB available: 15.58 GiB used: 1.54 GiB (9.9%)
  Processes: 216 Power: uptime: 1m states: freeze,mem,disk suspend: deep
    avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 6.22 GiB services: upowerd,xfce4-power-manager
    Init: systemd v: 256 default: graphical tool: systemctl
  Packages: pm: pacman pkgs: 1404 libs: 399 tools: pamac,yay pm: flatpak
    pkgs: 0 Compilers: clang: 17.0.6 gcc: 14.1.1 Shell: Bash v: 5.2.26
    running-in: xfce4-terminal inxi: 3.3.35

You did install this one?

I never had two wifi adapters at the same time, so I don’t know what would be shown in the menu to choose between the two.
You should probably enable only one at a time.

There is nmtui and nmcli to interact with NetworkManager as well as the graphical panel applet,
maybe the first is easier to work with …

it shows up as a dormant interface wlp0s20f0u3 - I have never seen this (dormant) and can’t advise. :man_shrugging:

We have seen it in other topics and it generally works with manjaro with the normal driver (this is not it as you know), at worst case with some tinkering.
It generally does not seem like a very logical for me you to ask for arch driver in the manjaro forum. AUR in not officially supported in manjaro, which you do not use anyway.
Are you sure at all the device supports monitoring mode? Looks like misconfiguration to me instead of driver issue, but i am not arch competent.
I edited the tags of the topic.

i have no idea what monitoring mode is.

The idea came from you mentioning:

Monitoring mode may not be a feature in the more standard driver - but aircrack
(a program - look up it’s purpose)
needs this to work.
You presumably chose to want to use this driver for this feature.
But it was likely just a guess.
I personally don’t know anything about the capabilities of this driver or why you would choose it in favor of the rtl8821au-dkms-git